Sql server conditional where clause Aggregation The query should have a cost of 0. You'd do it using SUM() with a clause in, like this instead of using COUNT(): e. If you need it to not try something under some circumstances, you need to force that in the way that you write your query. By default the window clause is UNBOUNDED PRECEDING AND CURRENT ROW (from - to). I have nvarchar parameters and int parameters. The WHERE clause in the statement looks something like this: OrderDate BETWEEN @StartDate AND @EndDate AND SupplierCode = @SupplierCode The business process has changed - as it always will. Stored procedure with conditional Where clause in SQL Server. 4. SELECT IIF(Obsolete = 'N' OR InStock = 'Y', 1, 0) AS Salable, * FROM Product This is effectively just a shorthand (albeit not standard SQL) way of writing CASE. Conditional WHERE in SQL clause. SQL Server: How to handle two different cases in Where clause. SELECT SUM(CASE WHEN Position = 'Manager' THEN 1 ELSE 0 END) AS ManagerCount, Second, the above may not make optimal use of indexes, based on the way that SQL Server caches plans for stored procedures. SQL - Conditional Where statement. The difference between the AND operator and the OR operator is that the OR operator requires That's not how a CASE expression works. SQL Conditional AND Clause. CASE is an expression that returns a value. Using a Conditional in a T-SQL WHERE Clause. Modified 1 year, 1 month ago. In this article. B, t2. Cant use and/or. Add a comment | 0 . I need help writing a conditional where clause. I will need to see the last full database back up older than 2 days. If that parameter is left blank, then the SELECT should default to NOT having the WHERE clause at all. Conditional WHERE based on SQL Server parameter value. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company If both parameters have a value, then my where clause will need to include: WHERE CAST(CreatedDate AS date) BETWEEN @StartDate AND @EndDate If @EndDate is null, then it should be: WHERE CAST(CreatedDate AS date) = @StartDate If both or null then the date should not be a part of the WHERE clause at all. Whether you’re retrieving data, updating records, or deleting entries from a database, the WHERE clause plays an important role in defining which rows will be affected by the query. Modified 6 years ago. Here is the code. That can easily be incorporated into the logic, if you need to SQL Server - check input parameter for null or zero. I wouldn't try that with This SQL Server tutorial explains how to use the WHERE clause in SQL Server (Transact-SQL) with syntax and examples. The SQL WHERE clause allows to filtering of records in queries. Simple where in sql. Additionally, the End=1 will conclude the CASE statement by including only those rows in the result that return 1. SQL Conditional Unique Constraint With Where Clause Within Same Table. SET @Throw = 1; IF @Throw = 1 BEGIN SELECT * FROM someTable WHERE someField = 'A' and (EndTime > @someTime) END ELSE IF For example, if the query processor can bind to (access) the tables or views defined in the FROM clause, these objects and their columns are made available to all subsequent steps. Ask Question Asked 13 years, 6 months ago. There's a WHERE clause that I want to control based on this param. Introduction to SQL WHERE clause. Thus, the solution in this case is to write the condition in the form of an expression. WHERE (dbo. C FROM [Table] t1 OUTER APPLY (SELECT TOP 1 t2. Modified 13 years, 6 months ago. Hot Network Questions The most efficient way according to my own testing is: *Remark: only valid for NON-NULLABLE columns, as commented by Aaron. B THEN 1 You can't use the result of a boolean expression as a value in SQL Server, but you could replace it with a logical 1/0, something like this: Conditional where clause SQL Server 2012. cid IS NULL) AND (t2. Create a Server. SQL Server XQuery native out-of-the-box FLWOR expression is a way to do it. sql-server; Share. If @ParkID = 22, then return both rows. – Ilya Chernomordik. but in this example I don't think there will be much performance gain. 5. SELECT * FROM table1 t1 LEFT JOIN table2 t2 ON t1. IF ELSE CONDITION IN SQL WHERE CLAUSE. Furthermore, we can also use the combination of WHERE and IN clauses to retrieve the id and name column from the Department table where the code is either CS or EC: SELECT id, name FROM department WHERE code IN ('CS', 'EC'); In this query, Now, I am trying to set up another AND clause for ParkID. When I try to combine them in a case statement in the where clause, however, I'm getting errors galore, starting with the first inequality after the "then. In other words, I need to create a stored procedure that filters for or against different parameters, You could change that WHERE clause to. [ New Author Sotiris Filippidis brings us an article on how you can structure a WHERE clause to handle all types of strange business logic without using dynamic SQL. One of the parameters is to look for a flag parameter. SenderId ELSE m. Dynamic WHERE clause in a stored procedure. id=@jobid) If @leadid> 0 then introduce this condition in where clause (l. SELECT * FROM [Table] WHERE [A] = [B] AND IF EXISTS ( SELECT TOP 1 1 FROM [Table2] WHERE 1 = 1 ) BEGIN --Do conditional filter (Table3. Where query with NULL parameter. That way if the "conditional check" is true than the second half of the OR clause isn't evaluated. ranking function structure. Two Condition Where-clause SQL. Follow SQL Server conditional select depending on input parameter. [Description] Like @What AND companies_SimpleList. The SQL WHERE Clause. (Actually, we use NULL as the "no argument" value, Not a where clause but I think it is sargable. Employees e WHERE (@GenderType IS NULL OR e. The parameters are as follows: @StateID as int, @CountyID as int, @CityID as int. The IIF statement is only available in SQL Server 2012 and up, you can replace it with a case statement. SELECT column1, column2, FROM table_name IIF in WHERE clause. RecipientId END) = @UserId Because what you put after the THEN in a CASE should just be a value, not a comparison. Third, I strongly discouraging returning a result set from a stored procedure when you can easily write a table-valued function to do the same thing. SQL Server add null in where clause. Where Clause based on condition. Status = 'A' AND I'm using SQL Server 2008 Express, and I have a stored procedure that do a SELECT from table, based on parameters. SQL WHERE clause - Conditional filters. i want where clause with conditional value i. For this query the easiest fix would be to use a CASE expression in your WHERE clause. The CASE statement evaluates one or more conditions and returns a result based on the first condition that is true. * FROM dbo. Where CLAUSE and NULL values. SQL - Include where condition if variable is not null. id and ADDRin. What I want / need to do is have it report on missed back ups. Follow SQL - Conditional WHERE clause. On rows where ParkID IS NOT NULL, we only want to keep those rows if ParkID matches the parameter. I have the following clause WHERE (dbo. So, if on rows where ParkID IS NULL, we want to always keep those rows. SQL Server WHERE clause XPath with multiple nodes and conditions. Note however: this works pretty efficiently on Sybase 11 or above; it worked pretty inefficiently on MS SQL server 2003; I don't know how it works on the current version of MS SQL Server. The CASE statement A very powerful yet obscure feature in SQL is the ability to have parts of the where clause conditionally execute. js, Java, C#, etc. Modified 10 years, 9 months ago. I'm using SSRS Report Builder and SQL Server 2016. Viewed 3k times 0 I have this XML in a table column in SQL Server: <root> <Request> <RequestData> <VendorLeadList> <VendorLeadItem> I have a SQL Server stored procedure where I want to add a conditional clause based on a parameter (@action). SQL Server stored procedure dynamic SQL in WHERE clause. Condition WHERE clauses inside stored procedure. id WHERE a. ) I like that you wrapped this in parens, because it makes it clear that this approach can be extended to allow for other "optionally supplied" search parameters e. My problem is that I want to expand this stored procedure for 2 different WHERE clauses, but I can't get my IF ELSE correct to parse I would like to write the following IF statement in SQL. Ask Question Asked 8 years, 8 months ago. FirstName gets referenced first. I just wanted to know your thoughts on the optimal way to write an optional string search in a WHERE. Hot Network Questions Which lubricant for plastic rail guides on sliding doors? Is there a natural topology for sets of topological spaces? British TV show about a widowed football journalist Looking for a short story about Bela Lugosi Unfortunately, the replace value of statement only updates one node at a time. create proc sel_projects (@incClosedRel int = 1) as SELECT projectId, projectName FROM project WHERE CompletionStatusCID NOT IN (34, 35) <-- controlled by @incClosedRel Because both your cases share the m. SQL Server 2005 - Building a WHERE clause. [DateRange] ( @StartDate date, @EndDate date, @Location varchar(25), @Device varchar(25) ) RETURNS TABLE AS RETURN ( SELECT * FROM MyTable WHERE Date < @EndDate AND Date > In order to do dynamic SQL, I'll have to stuff the entire query into a string, concatenate the @flag param in the WHERE clause and then exec the string. [A]) END SQL Server conditional where clause. Select from table depending on a parameter in where clause. Just becasue the way table and type are populated. Commented Feb 9, 2015 at 9:49. Let's make it more intuitive by splitting the two apart: WITH CTE1 AS ( SELECT * FROM MemberTable WHERE BranchNumber = '01' AND MemberStatus = 'Active' ) , CTE2 AS ( SELECT *, ROW_NUMBER() OVER (PARTITION BY UserID ORDER BY [MemberDate] DESC) AS RowNumber FROM CTE1 ) You can either use any of the recommend range queries mentioned, or in SQL Server 2008, you could use the DATE only date time - or you could do a check something like: select * from tblErrorLog where DAY(errorDate) = 20 AND MONTH(errorDate) = 12 AND YEAR(errorDate) = 2008 CASE syntax inside a WHERE clause with IN on SQL Server. : SELECT * FROM table WHERE col1 = param1 AND (param2 IS NULL OR col2 = param2) This by-passes the clause for all rows if the parameter is null. IF clause in SQL from statement. I prefer the conciseness when compared with the expanded CASE version. I am attempting to use a case statement, but am getting stuck maybe the case statement isn't the best way to do this, and if so, any viable alternatives would be appreciated. Yes it does stop at the first conclusion, but there's no guarantee the condition on the left is processed before the right. Viewed 18k times CASE statement inside a WHERE clause in SQL Server. Hot Network Questions Odds of hitting a star with a laser shone in a random direction SQL Server : conditional case in where clause. SELECT ADDR. Building dynamic where condition in SQL statement. T-SQL - Conditional WHERE clause. TSQL, Dynamic Where Clause. B = t2. I am trying this: There are a few differences between case in PL/SQL and Oracle SQL. Note that <ColLetter> and <ColValue> are string insertions, where <ColLetter> will be one of ColA, ColB, ColC, or NULL, SELECT * FROM someTable WHERE someField = 'A' and (EndTime > @someTime OR EndTime IS NULL) Above was the original query. Hot Network Questions Didactic tool to play with deterministic and nondeterministic finite automata futex for a file in /tmp directory: operation not permitted multinomial covariance matrix is singular? Adding Conditional Clause(Where) to Dense Rank Function. I am modifying an existing stored procedure in SQL server and trying to come up with a query that should take a conditional WHERE depending on whether one of the input parameters is null or has value. ELSE to do conditional where clause. I want to use completely different conditions in a WHERE-clause in an SQL Server 2014 query, not just change the parameter. Hot Network Questions She locked the door securely behind her The ROW_NUMBER is evaluated after the WHERE. Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric SQL database in Microsoft Fabric Imposes conditions on the execution of a Transact-SQL statement. Here is another using just the WHERE Clause: SELECT * FROM Table A WHERE (@Checkbool = 1 AND A. In SQL Server, the CASE statement in the WHERE clause is a powerful tool that allows you to apply conditional logic to filter rows based on specified conditions. In the more general case, a comparison expression would be used. conditional Conditional WHERE clause with CASE statement in Oracle. So, putting a CASE expression into the WHERE clause as you SQL Server query optimizer is responsible for parsing T-SQL query and creating execution plan based on table sizes, indexes, etc. Seems Sql Server 2008 does not have the windowing clause? I didn't even think you could create an analytic function without a windowing clause. CREATE FUNCTION [dbo]. I have a SQL Server 2005 stored proc that takes a parameter: @includeClosedProjects. It is used to extract only those records that fulfill a specified condition. The first condition is dept = 'Finance', and the second condition is dept = 'Sales'. But I can't get it to work. SQL where if statement. siteId); CASE expressions are designed to generate literal values, not logical expressions, as their output. In my SQL statement if the value of Type is equal to 'T' then I want to add a conditional OR clause as shown below. In this article, we will Oracle, SQLite, SQL Server don't support it, which are the ones I use it certainly isn't part of the SQL standard as far as I can tell. As workaround, You can get the proper ANSI behavior in SQL Server 2008 and above by creating a unique, filtered index. How to use SQL Select statement @DennisJaheruddin I've re-read your various reasons and all the other answers and see why you don't use it in your WITH mytmp CTE. Hot Network Questions Can we judge morality? Are pigs effective intermediate hosts of new viruses, due to being susceptible to human and avian influenza viruses? I made a Betty Crocker cake mix with oil instead of butter - how Depends what you mean, but the other interpretation of the meaning is where you want to count rows with a certain value, but don't want to restrict the SELECT to JUST those rows. conditional where Sql server. In PL/SQL you can write a case statement to run one or more actions. Check it out a solution below. The following illustrates the syntax of the WHERE clause in the SELECT statement:. Optional 'IS NULL' WHERE clause based on a parameter. Using SQL Server, I have a stored procedure which I want to make a string search optional. I'm trying to write a query and I'm trying to figure out how to implement conditional statement in sql. Sql Server 2012 Stored procedure query with where clause is null or input parameter. Change from using the "or" syntax to a union approach, you'll see 2 seeks that should keep your logical read SQL Server : conditional WHERE-clause. Col1=1 or Col2=3) and my query looks something like the following: Note: I tried using sp_executesql and sp_sqlexec but In SQL Server, the CASE statement in the WHERE clause is a powerful tool that allows you to apply conditional logic to filter rows based on specified conditions. here's my basic query Suppose I had this following table in SQL Server: And what I was looking to achieve (in words) woud be: Create a new column, Conditional_Sum = Sum of ColC for each value in ColA where ColB = 1 and ColC > 0. So if a action is X or Y then I don't want to use the where clause (and want to fetch all records), but if the action is NOT X OR Y then I want to fetch only those records that match with other parameter (@username). Viewed 8k times Using ranking-function derived column in where clause (SQL Server 2008) 1. T-SQL Conditional WHERE clause based on result of WHERE clause. Ask Question Asked 5 years, 9 months ago. A pseudo code example is below. sql query if parameter is null. Key even when @key is null. Also more or less your dynamic sql is ok. SQL - Retrieve records based on parameters where either parameter can be null. New to SQL Server and trying to write a query that changes the where statement based on the options presented to the report user. How to append an extra AND statement to a WHERE clause based on a condition? Hot Network Questions How much of a structural/syntactic difference is there between an oath and a promise? In my MS SQL Database I have a table of articles (details of them like insert date, insert user and other staffs) and one table with the body of articles in multiple sql; sql-server; where-clause; exists; or ask your own question. I want to select a location and see if items for that location meet certain criteria. Ask Question Asked 11 years, 3 months ago. Hot Network Questions Is it possible to optimize the following parts of the stored procedure regarding the WHERE clause without using dynamic SQL? The only difference between the two alternatives is that if Admin = 1 then Optimize SQL syntax with conditional WHERE clause. I tried combinations of CASE IF but all cases only filter the idMaster=10,11 and idList=45,98, excluding the other rows. Summary: in this tutorial, you will learn how to use the SQL WHERE clause to filter rows based on specified conditions. g. How to apply case in where cluase along with in clause. ALTER PROCEDURE [dbo]. Otherwise, if it passed Equipment it would then use that instead. [psProducts] (@SearchType varchar(50)) AS BEGIN SET NOCOUNT ON; SELECT P. loc AND (t3. If the first is true, I don't want to match on the second. Applying SQL WHERE Conditionally. loc = SQL Server does not do short-circuiting (nor should it). Also, you can use case; you just have to put the case in where clause, not the where clause in the case. 6. [C] = Table. First, I have a local variable @gender. You have to use Dynamic SQL or a multi-step query batch (e. Using microsoft SQL server 2012, so T-SQL – user3009908. without a lot of conditional parameters, you might want to try this instead for performance: IF ( @MyParam IS NULL ) SELECT Something FROM SomeTable WHERE AnotherField = 1 ELSE SELECT Something FROM SomeTable WHERE SomeField = @MyParam AND AnotherField = 1 The correct equivalent for your pseudo code is: WHERE (Col1 <> '' AND Col1 = @Val1) OR (Col1 = '' AND Col2 <> '' AND Col2 = @Val2) This matches in priority order, first on Col1 and then on Col2. The SQL Server (Transact-SQL) WHERE clause is used to filter the results from a SELECT, INSERT, UPDATE, or DELETE statement. These work independently in the where clause. And for a single update the position [0] is wrong, it should be [1]. because we want use this "where" clause only if have valid data then we change id too. AND (c. You don't have to order your where clause to get that benefit. @KVPrashant: that statement isn't entirely correct - SQL Server DOES NOT do boolean evaluation strictly as the statement is written; it is quite possible the LIKE will be evaluated first. It should be something like this: DateAppr, TimeAppr, TAT, LaserLTR, Permit, LtrPrinter, JobName, JobNumber, JobDesc, ActQty, (ActQty-LtrPrinted) AS L, (ActQty-QtyInserted) AS M, ((ActQty The SQL CASE statement specifies a conditional expression to perform different actions depending on the input expression value. So your original query would be: Now we’ll write the same query with a conditional where clause [cc lang=”sql”] CREATE PROCEDURE spGetEmployees (@GenderType varchar(20) = NULL) AS BEGIN. Neither ISO SQL and T-SQL support any kind of conditional predicates in the WHERE clause. Unfortunately, there are some limitations with CASE expressions that make it cumbersome to do what you want. If it's a simple query i. It's an ugly solution but simple: I am trying to put an if condition within a where clause and I cannot figure out the correct syntax for what I want. Since this question is tagged sql-server, I still think that those aren't valid Conditional WHERE clause in SQL Server. In the WHERE clause you still need to make a boolean expression. 8. Using the prefix can cause application code to break if there is a system procedure with the same name. Most of the where clause is constructed, but it's the condition around the statement that I'm struggling with: if @StuYear = 11 then AND (@ sql server-conditional where clause. In other words, it does not do efficient short circuiting when evaluating the WHERE clause. I can't figure out how to add the functions to the WHERE clause depending on the declared variables. e if else before where clause. 1. Hot Network Questions Should I just stop applying for admission to PhD with my research gap of 8 years? If @jobid> 0 then introduce this condition in where clause (j. id = b. I recommend you write the queries in the most readable way possible. How to append an extra AND statement to a WHERE clause based on a condition? Hot Network Questions Marginal effect of poisson regression with interaction Joining two lists by matching elements of the two Print the largest hidden double From SQL Server 2012 you can use the IIF function for this. He said that if he passes any filter value to the query / procedure, it should consider that filter otherwise query should ignore that filter and return all records. id=@leadid) If @employeeid> 0 then introduce this condition in where clause (e. Improve this answer. Large collection of code snippets for HTML, CSS and JavaScript. declare @queryWord as nvarchar(20) = 'asdas' SELECT * FROM TABLE_1 WHERE In this instance, RTRIM is unnecessary as Sql server ignores trailing spaces during comparison. 51 4 Sql conditional statement on where clause. id = t2. sql - problems with conditional WHERE clause with CASE statement. I was going to use a view and write dynamic sql to query the view, but I need to use a full text index, and my view needs outer joins (MS-SQL 2005 full-text index on a view with outer joins)So, I'm back to a stored procedure. However, how could I make the below example multi-value parameter i. I want to basically do a "AND" if the parameter value is not null. tAddresses ADDR left join dbo. Basically I want my query to check the values of a column from a list of string, if the first one exist only return values with that string, Sql Server Conditional And Clause. There is a stored procedure sp_WHYWHYWHY which takes 3 parameters - 2 are dates and one is supplier code. js, Node. 71. It's a simple SELECT query that I am building. I have a stored procedure in SQL Server 2000 that performs a search based on parameter values. How to conditionally add an AND condition to a WHERE clause in SQL Server. There is no way you can reduce if block except going my way. Condition that decides whether to SQL Server query include null in where clause. a sequence of T-SQL statements) in a single SqlCommand object or SQL Server client session, so with that in-mind you could do this: DECLARE @foo nvarchar(50 The simplest (though probably not the most efficient) way is to handle the null inside the SQL statement itself, e. Dynamic sql query with stored procedure and table variable. If @search has a value I want to search for the string, otherwise if it is empty it should bypass the search. Oracle with CASE Statement in WHERE clause. You just need to create a user defined table type first. tAddresses ADDRout on ADDRout. SQL case with partition by and select rows with specific value. [ProductId], In SQL Server, how do you create a conditional where clause that evaluates different equality? WHERE [Date] <= WHERE [Date] = OR put another way: sql server-conditional where clause. 3. I'm writing a fairly complex stored procedure to search an image library. In this article, we discussed various methods for implementing IF or IF-ELSE logic in an SQL WHERE clause. . 0. Hope this helps. Otherwise, there will be no OR clause if type not equal to 'T': select customerid, type from customer where cityid = '20' if type is equal to 'T' select customerid, type from customer where cityid = '20' OR cityid = '5' SQL: IF clause within WHERE clause. Here is my problem, my where clause looks like this: WHERE [companies_SimpleList]. Like the title already explained, I'm struggling with my WHERE clause in my SQL stored procedure. table_b as b ON a. The above sql was run on Oracle and Postgres without issue. CASE and IN in WHERE. Applying conditional WHERE clause without using a Dynamic I'm trying to do a conditional AND within a SQL WHERE clause. System is SQL Server 2008 R2. Select query only when a The relational algebra allows interchangeability of the predicates in the WHERE clause and the INNER JOIN, so even INNER JOIN queries with WHERE clauses can have the predicates rearrranged by the optimizer so that they may already be excluded during the JOIN process. Modified 7 years, 10 months ago. Use where clause conditional in SQL. Create a Flag based on a condition from other table. For SQL Server, I think it depends on the version but my experience with SQL Server 2000 is that it still evaluates @key = t. I have a SQL Server 2005 stored procedure that performs a query. Conditional SQL Server query. State = 'CA' and @InState = 1 left join dbo. WHERE (CASE WHEN @MessageStatus = 4 THEN m. But you could change the order and go from CURRENT ROW to EDIT: Adding link to similar question/answer with context as to why the union / ifelse approach works better than OR logic (FYI, Remus, the answerer in this link, used to work on the SQL Server team developing service broker and other technologies). T-SQL is NOT like a "deterministic" programming language like C# - there's no guarantee for this behavior – @YS. SQL Server : Where condition based on the parameters. The Transact-SQL statement that follows an IF for simplicity sake, you can try below sample conditional logic: DECLARE @enddate datetime2(7); SET @enddate = NULL; SELECT @enddate; IF @enddate IS NULL SELECT 1, 2 FROM dbo. Example. EDIT: here is a better example from another Question on StackOverflow: With T-SQL in SQL Server, although it works, you should use: NOT => ! <> => != = => == Share. Put where clause criteria in SQL based on conditions? Hot Network Questions Decode the constant/variable Constructing equilateral triangle with a vertex on approximately lattice points A Pandigital Multiplication Conditional where clause using non-NULL parameters. Create your own server using Python, PHP, React. Use IF conditional in WHERE clause. Follow answered Jul 18, 2016 at 10:11. Multiple Condition in Where Clause for the same column. This prefix is used by SQL Server to designate system procedures. #MemberInfo') is not null drop table #MemberInfo DEC I have a stored procedure which has two parameters: @PublishedFrom SMALLDATETIME = NULL, @PublishedDeadline SMALLDATETIME = NULL I want that when PublishedDeadline is null then WHERE condition should have:. If the first doesn't have good data, want to use the second only I have the following SQL statement that list all the columns of a table, and for some reason it ignores the last 2 lines of the where clause: AND t. For example, all of the branches in a CASE expression must return the same type, or be implicitly convertible to the same type. It would be much simpler to apply your filter; and the Query Optimiser should be able to find a more efficient overall plan. With this, you can really rule out parameters you don't need in where clause. Using Case When Clause in Where Clause. SELECT * FROM dbo. D AND (t1. Something like this: SELECT * FROM Product WHERE (@ProductID <= -1 OR ProductID = @ProductID) AND @ProductName = '' OR ProductName = @ProductName) -- etc. Hot Network Questions Using FoldList on multilevel List Can a hyphen be a "letter" in some words? Applies to SQL-server. One solution could be to do the following. These methods include using CASE, Boolean Operators, IF() or In this solution, you can use IIF clause instead of IF. Running SQL Server 2014. id=@employeeid) I know how to achieve this through dynamic SQL but I need a static SQL statement to achieve this. The only garuntee you have is that it will run statements in order so: SELECT A FROM B WHERE C SELECT D FROM E WHERE F will run the first line before the second. answered Jul 4 Creating a dynamic where clause in SQL Server stored procedure. SQL Server conditional where clause. CASE CLAUSE IN WHERE CONDITION. I'll bracket the conditional parts There have been issues in the past with SQL Server only compiling the first used branch of a conditional clause (I'm not sure whether that is In this solution, you can use IIF clause instead of IF. SELECT * FROM T_Mytable m WHERE m. TSQL : conditional query. How to make a where clause is optional in Sql Server? 3. Hot Network Questions Variable SQL join operator using case statement How to use an RC circuit and calculate values for a flip flop reset How bright is the sun now, as seen from Voyager? From time to time, I have a need to utilize a conditional WHERE clause. SQL Server Conditional statement in Where Clause. SecurityCheckUserInADGroups. Applying a WHERE clause conditionally in an SQL query. To select specific rows from a table, you use a WHERE clause in the SELECT statement. These parameters are used to query a list of customers. A, t2. Keywords Like @Keywords AND I set variables at the top of my SQL script for date and then call those variables in many other places to keep things simple. Commented Nov 18, 2015 at 20:42. This stored procedure takes two parameters: userName and ID The userName Conditional SQL where clause. Both IIF() and CASE resolve as expressions within a SQL I need a solution for a conditional WHERE clause in SQL Server. D = t2. Note: This version assumes that Col1 is not NULL. Hot Network Questions Will a laptop battery that stays connected to its charger be damaged? Put the conditions in the on clause instead of the where clause. name = 'dba' Few days ago, I received a query from one of my blog readers inquiring how to implement a conditional where clause in a SQL Server query / stored procedure. create Dynamic where in sql SP. Filter with partition over in SQL Server. I have a SQL Server query that filters some data using: and datepart(mm,cs. Without it, SQL queries would return all rows in a table, making it difficult to target specific data. id LEFT JOIN table3 t3 ON t2. As others have noted, you should use dynamic SQL sparingly and in situations where no other method is suitable. --This script is compatible with SQL Server 2012 and above USE AdventureWorks2012 GO DECLARE @City AS VARCHAR(50) SELECT BusinessEntityID , FirstName , LastName , City FROM [HumanResources]. T-SQL | Conditions in Where Clause. Follow edited Aug 20, 2009 at 8:45. SQL If-Else in the WHERE clause with conditions based on column values. Ask Question Asked 6 years, 3 months ago. Loading IF ELSE clause is very handy and whenever you need to perform any conditional operation, I'm writing a stored procedure where I would like to pass in a filter (e. Thanks! When I see a multi-column WHERE IN (SELECT) I only see case 2, since they would be returned as a list of N column tuples so the multiple IN solutions don't seem to match. There are several enhancements to case available in PL/SQL: case statements; Extended case controls (from 23ai) Case statements in PL/SQL. I have tried a couple of things like: So you might as well end up SQL Server doing all the unnecessary checks. There are mechanisms to get around that when necessary. Thank you. EDIT: To get what you want you can use something like this: SQL SELECT with conditional WHERE clause. SomeFunction(SomeColumn, @SomeParam)=1) Then 1 Else 0 End Else 1 End) T-SQL - Conditional WHERE clause. SQL Server: SELECT IF conditionally. Where clause with a conditional condition. The criteria change based on the location. B OR t2. tAddresses ADDRin on ADDRin. The downside of adding the count/exists directly to your original query is that SQL server might execute it for all rows. cid = @CustomerID OR t3. a stored procedure). I'm not sure how to do the conditional where clause. A conditional statement within a Partition By In SQL. So same T-SQL statement against same database schema might be executed differently depending on database content, configuration, etc. How to use a conditional case in the where clause using different conditional columns? Please refer to the code below if OBJECT_ID('tempdb. in any case use number but with diff value (according to the condition) – RollerCosta. Where condition based on parameter value. +1 (I reverse the order of those two conditions, so that c. A WHEN returns a value, . the user doesn't have to select just one option but can choose which option (or options) to select. All the examples presented in this session uses the AdventureWorks sample database of SQL server 2005 /* EXECUTE ProductSearch1 NULL. [vEmployee] WHERE City = IIF BTW, there's no such thing as a short circuit boolean in SQL Server. The stored procedure takes three input parameters @FromDate @ToDate @PersonnelNo You can make "conditional" WHERE clauses by pairing them with OR clauses. 003 and use an index seek no matter what but you can see that SQL Server gets stupid and increases it by a factor of 300 when you add the or clause, or by a factor of 100 if you use Jeff's workaround which allows the index seek to kick in but with a performance hit, or by a factor of 30 if you change Jeff's coalesces to isnulls. where clause from where clause. Ask Question Asked 7 years, 8 months ago. StartDate >= @PublishedFrom OR @PublishedFrom IS NULL) Stored procedure with conditional Where clause in SQL Server. This database has a stored procedure that queries one of the tables. I'd like to add a conditional where clause to add an AND statement but ONLY if there's data in the @test_patient field. I am creating a SQL query in which I need a conditional where clause. Creating optional WHERE clause inside of SQL Server stored procedure. IIF (Immediate IF) is a logical function in SQL Server that allows you to conditionally return one value or another based on a specified condition. Dynamic SQL can open up the risk of SQL injection attacks, and as noted in "The Curse and Blessings of Dynamic SQL", there are also more subtle gotchas to watch out for. Ignore WHERE clause when column value is NULL. Improve this question. table_a as a INNER JOIN SQL Server : conditional WHERE-clause. starttime ELSE SELECT 1, 2 FROM dbo. How To's. Conditional where clause? 0. Using case in where clause with conditions in SQL. Id = 123) OR (@Checkbool = 0 AND A. I have working queries for each option, but want to use one report to check each location. SQL - Conditional Nto sure which RDBMS you are using, but if it is SQL Server you could look at rather using a CASE statement. WHERE condition1 OR condition2 OR condition3 In our example, we have two conditions. Conditional WHERE Clauses In A Stored Procedure. sql conditional where clause. appId = @appId condition, you may refactor your WHERE logic as:. id = ADDR. It is not for control-of-flow, like IF. Conditional statement inside where clause to account for null values. Conditional from in sql query. Imagine you had LatestStatus as a table with ControlNo and StatusID columns. "Prepare" the data you require for the WHERE clause "in advance", so you can eliminate the RBAR. Conditions if not null in where in SQL Server. If you go my way then No use in trying dynamic sql. Conditional Where clause: Any way to SQL Server will generate an optimized plan for each statement it executes. I have also tried the case condition but still no success. SQL Server: IF EXISTS ; ELSE. Hot Network Questions Every day, how much speed does Voyager lose due to the sun's gravity? The cast has to be inside the CASE; SQL server requires that all paths of the case produce the same variable type. Evaluates a list of conditions and returns one of multiple possible result expressions. table_a as a INNER JOIN dbo. This stored procedure takes in three parameters. IS NULL; IS NOT NULL; ANY VALUE (NULL AND NOT NULL) (essentially no WHERE clause) I need to match some gender specific data in a SQL query and am having some difficulty in getting the where clause logic correct. Aside from the dirty feeling I get when doing dynamic SQL, my query is fairly large (I'm selecting a couple dozen fields, joining 5 tables, calling a couple of functions), so it's a big giant string all because of a single line in a 3-line sql server-conditional where clause. B IS NULL) ORDER BY (CASE WHEN t1. GenderType = @GenderType) END [/cc] What we did here is utilize the power of the OR statement in the Where clause. Share. id and ADDRout. (i. Simple where clause condition involving NULL. The WHERE clause is used to filter records. How to write conditions in a WHERE clause? 0. I am creating a SQL Server stored procedure. DENSE_RANK on Calculated Column. Conditional Check in Where clause. CREATE TYPE IdTable TABLE AS (Id int NOT NULL PRIMARY KEY) GRANT EXECUTE ON TYPE::IdTable TO PUBLIC GO DECLARE @sql NVARCHAR(1000) DECLARE @tableVar IdTable INSERT INTO @tableVar (3) SET @sql = N'Select id from @p1 where ' + SQL Server provides IIF, which is equivalent to a CASE expression (see below). @search is a parameter. conditional where statement in tsql? 0. Conversely, because the SELECT clause is step 8, any column aliases or derived columns defined in that clause cannot be referenced by preceding clauses. SQL how to include conditional in where clause. A case expression returns a single value. answered Use where clause conditional in SQL. And you can't use IF within a query. 10. SQL Server WHERE clause based on conditions. name ='table1' AND s. Conditional where clause using non-NULL parameters. here is my situation: I have a bit value that determines what rows to return in a select statement. Most often developers will make duplicate copies of an entire query to The following stored procedure shows 3 different ways of writing a conditional WHERE clause for "=" operator. But, I only want to execute this AND on rows where ParkID IS NOT NULL. The CASE expression has two formats: The simple CASE expression compares an expression to a set of simple expressions to determine the result. e. Given below is the script. I have a combobox that sets the value of @NULLFather' and '@NULLMother. In other words, I need to create a stored procedure that filters for or against different parameters, depending upon varying This will work and easier to understand, at least for me. Now I have a new condition to see if to take away EndTime IS NULL. I will also need to see any differential back ups older than the last day and any log back ups older than 30 mins. The syntax for the CASE statement in a SQL database is: For example, in the AdventureWorks2019 sample database, look at the [MaritalStatus] column value from the [HumanResources]. When the combobox is ticked the WHERE clause of stored procedure checks for the values of @NULLFather' and '@NULLMother and based on that gives a result. Ask Question Asked 10 years, 10 months ago. I got a SELECT query which joins multiple tables well and at the end if got a WHERE clause that give specific values to search for. CREATE PROCEDURE sprocA @flagInd int AS BEGIN SELECT intID, strQuestion, strAnswer, intCategory, intOrder sp_executesql works just fine with table variables. Follow edited Oct 27, 2018 at 9:31. Conditional WHERE clause. It only moves on to Col2 when Col1 is an empty string. SELECT Id, col1, col2, FROM myTable WHERE condition1 = IIF(col1 IS NULL, col1, @Param1) AND condition2 = IIF(col2 IS NULL, col2, @Param2) SQL Server conditional where clause. " Where Case when datepart(dd,getdate()) > 15 then [2 above] else [1 above] End Cure my ignorance. I have a similar question to SQL Conditional Where and Conditional WHERE clause in SQL Server, except when the condition is not met, I want to return all rows (as if there were no WHERE clause). Thus: WHERE CASE WHEN Col1 = 1 THEN Col2 = 2 OR Col3 = 3 ELSE Col4 = 1 END; Is completely wrong, the CASE only completes one side of the expression, and is also trying to evaluate Boolean expressions inside the WHEN. In SQL Server 2012, I have a big query that have this where clause: (1 = Case When (@bSomeSpecialCheck = 'Y') Then Case When (dbo. How to use conditional in SQL statement. Modified 8 years, 8 months ago. Since @Close basically contains a boolean value, it can be tested directly, rather than comparing to 1. So, the final result would be (added in RowNum to show how I got the values): Aggregation function with condition in partition SQL Server : conditional WHERE-clause. Sql Server Conditional And Clause. sql; sql-server; SQL Server conditional where clause. timestamp) &lt;= @month I have a parameter @accumulate that if true then I want to to above logic but if false then I wa IMHO,if it was some other example then dynamic Sql approach was good. Hot Network Questions Discussion: The operator OR stands between conditions and may be used to chain multiple conditions:. Vacancies. Using case in PL/SQL. Commented Mar 9, 2015 at 17:51. SQL Server stored procedure with WHERE clause logic. – FrenkyB. When searching for a list of products, the @SearchType parameter is optional. Where Clause with Conditions in SQL Server. SQL: Conditional Passed Parameter variable within WHERE Clause. Ask Question Asked 7 years, 10 months ago. State <> 'CA' and @InState = 0 WHERE ADDR. EXECUTE ProductSearch8 NULL EXECUTE From time to time, I have a need to utilize a conditional WHERE clause. If the value is true, I need to return rows where the import_id column is not null, if false, then I want the rows where the import_id column is null. Id <> 123) Everything you put in the where clause needs to be in the form of an expression. LastName = @LastName OR @LastName IS NULL). Related. loc = t3. SQL Server select condition. starttime >= b. For one of the parameters passed in, I need a different WHERE clause depending on its value - the problem is that the 3 values would be where MyColumn. SQL add conditional in WHERE clause. It takes three arguments: a Boolean expression that evaluates to true or false, a value to return if the expression is true, and a value to return if the expression is false. Ask Question Asked 11 years, 4 months ago. His requirement was quiet simple. * FROM t2 WHERE t1. 96. Modified 1 year, 10 months ago. In SQL Server, you can use outer apply for this: SELECT t1. If @SearchType is empty or NULL then it should return all products and not use the WHERE clause. Gábor Lőrincz Gábor Lőrincz. Ask Question Asked 5 years, 1 month ago. TSQL Optional Where Clause. Hot Network Questions Why is there no strong contrast between inside and outside the tunnel in my Blender animation? I have an application on a SQL Server 2008 database. 4 @IlyaChernomordik: And flushing performance down the hill. sql server-conditional where clause. Select a Column based on Condition? 30. appId = @appId AND @siteId IN (0, m. Or with this trick: It's the canonical reference for dynamic SQL. 2. pjjys jmll saqukc zbp yfvw lncu gtoj bojp fzptccqw onjq