Sql server conditional where clause Conditional WHERE based on SQL Server parameter value. 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-LtrPrinted)-(ActQty-QtyInserted)) AS N. I would like to know if there's a way to construct a query in which the existence of the actual where clause itself is conditional. Just be aware that sp_executesql caches the query plan, unlike EXEC in SQL Server. SenderId ELSE m. 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 Oct 4, 2017 · How to have conditional where clause based on parameter value. [DateRange] ( @StartDate date, @EndDate date, @Location varchar(25), @Device varchar(25) ) RETURNS TABLE AS RETURN ( SELECT * FROM MyTable WHERE Date < @EndDate AND Date > @StartDate AND Location = CASE WHEN @Location IS NULL THEN Location ELSE sp_executesql works just fine with table variables. Yes it does stop at the first conclusion, but there's no guarantee the condition on the left is processed before the right. here is my situation: I have a bit value that determines what rows to return in a select statement. ELSE to do conditional where clause. SQL if statement within WHERE clause. CREATE FUNCTION [dbo]. Highly recommend reading The Curse and Blessings of Dynamic SQL before considering dynamic SQL on SQL Server Jun 7, 2016 · Aside from figuring out my particular problem, my main question is: does SQL Server support conditional WHERE clause statements (I am convinced it does not from my research)? Why is this (architectural, time complexity, space complexity issues)? Jan 20, 2021 · 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. [C] = Table. Also, you can use case; you just have to put the case in where clause, not the where clause in the case. Dec 11, 2014 · I'm trying to do a conditional AND within a SQL 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 ' + @filter EXEC sp_executesql @sql, '@p1 IdTable readonly', @p1 Oct 2, 2013 · sql server-conditional where clause. e. Col1=1 or Col2=3 ) and my query looks something like the following: Jun 28, 2013 · In this solution, you can use IIF clause instead of IF. See full list on mssqltips. [A]) END Apr 23, 2013 · The most efficient way according to my own testing is: *Remark: only valid for NON-NULLABLE columns, as commented by Aaron. How to append an extra AND statement to a WHERE clause based on a condition? Hot Network Questions Marginal effect of poisson Jul 15, 2014 · 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. 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. Loading IF ELSE clause is very handy and whenever you need to perform any conditional operation, you can achieve your results using it. 0. SQL Server conditional where clause. But there are some limitations in IF Jan 13, 2018 · Is it possible to have conditional where clause, based on declared variable? Please note: my query is much more complicated than this, I am just using this example to simplify things. Something like this: SELECT * FROM Product WHERE (@ProductID <= -1 OR ProductID = @ProductID) AND @ProductName = '' OR ProductName = @ProductName) -- etc. Here's a basic structure of a CASE statement in the WHERE Jun 30, 2011 · I need to do a conditional statement in my where clause similar to WHERE IF(@Param = 0) THEN Column1 != 7 I am attempting to allow the user to exclude a set of records based on the value of the @ Feb 25, 2010 · I have a SQL Server 2005 stored procedure that performs a query. SQL: Conditional Passed Parameter variable within WHERE Clause. Conditionally take value. Sep 1, 2011 · I need help writing a conditional where clause. { sql_statement | statement_block} Any Transact-SQL statement or statement grouping as defined by using a statement block. I want to basically do a "AND" if the parameter value is not null. Conditional SQL Server query. WHERE (CASE WHEN @MessageStatus = 4 THEN m. One of the parameters is to look for a flag parameter. It's a simple SELECT query that I am building. SELECT * FROM [Table] WHERE [A] = [B] AND IF EXISTS ( SELECT TOP 1 1 FROM [Table2] WHERE 1 = 1 ) BEGIN --Do conditional filter (Table3. This stored procedure takes in three parameters. A very powerful yet obscure feature in SQL is the ability to have parts of the where clause conditionally execute. Ask Question Asked 7 years, 2 months ago. ELSE clause to do conditional where clause. eightmonthinc as select * from dbo. 4. 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' May 3, 2011 · How can i use the where clause in the SQL query in the stored procedure. this code is NOT SAFE . 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. Feb 15, 2019 · 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 there shouldn't be any WHERE clause, otherwise it should be there. If that parameter is left blank, then the SELECT should default to NOT having the WHERE clause at all. Apr 2, 2010 · 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. These parameters are used to query a list of customers. The parameters are as follows: @StateID as int, @CountyID as int, @CityID as int. Aug 2, 2017 · I am creating a SQL Server stored procedure. [dbo]. So your original query would be: Sep 3, 2024 · If the Boolean expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses. [MM] DateDropped = 0. g. Jun 28, 2013 · You can use CASE statement instead of IF. Jul 3, 2017 · You could change that WHERE clause to. RecipientId END) = @UserId Because what you put after the THEN in a CASE should just be a value, not a comparison. Can we do it like below. The CASE statement evaluates one or more conditions and returns a result based on the first condition that is true. A pseudo code example is below. I'm writing a stored procedure where I would like to pass in a filter (e. com May 22, 2001 · The conditional WHERE clauses are based on the simple principle defined by the query "SELECT something FROM sometable WHERE 1=1" As you can see, all CASE statements evaluate to either 1 or 0, Aug 4, 2024 · We can use the CASE statement to perform conditional logic within a WHERE clause. Unless a statement block is used, the IF or ELSE condition can affect the performance of only one Transact-SQL BTW, there's no such thing as a short circuit boolean in SQL Server. This is my code so far: create view dbo. Most often developers will make duplicate copies of an entire query to facilitate two different variable choices. Given below is the script. Syntax. The stored procedure takes three input parameters @FromDate @ToDate @PersonnelNo 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. Jan 23, 2018 · Sql Server Conditional And Clause. --This script is compatible with SQL Server 2005 and above. [test]. Hot Network Questions Jul 1, 2016 · I'm trying to use a case when clause in a where statement to return values if they fall into 2 different categories. Jun 28, 2011 · Conditional SQL Select statement. 1. That way if the "conditional check" is true than the second half of the OR clause isn't evaluated. . Something l Jul 23, 2014 · The sargable, dynamic version (SQL Server 2005+): Love or hate it, dynamic SQL lets you write the query once. Sep 5, 2013 · I am creating a SQL query in which I need a conditional where clause. Jan 21, 2016 · You can make "conditional" WHERE clauses by pairing them with OR clauses. You just need to create a user defined table type first. For example, we can use it to create IF-THEN-ELSE style queries that can be used to create, modify, or execute calculations based on certain criteria . xli kqiqi etr upkm oamrf sset dqos mwcmu ndu tkwkmy