Sql if then else statement in where clause

2020-02-24 19:42

END in the where clause of a SQL statement? I have sucessfully used it in the select portion of my statment but I would also like to use conditional criteria in the WHERE portion. Any advice isIF STATEMENT IN WHERE CLAUSE. Thanks, but i need a IF because of the following: DECLARE @productname nvarchar(3) SET @productname 'All' SELECT FROM product WHERE productname CASE @productname WHEN 'All' THEN (SELECT 'a' UNION SELECT 'a' UNION SELECT 'c') WHEN 'a' THEN 'a' WHEN 'b' THEN 'b' ELSE END this sql if then else statement in where clause

Feb 14, 2006 USING SQL IF Statement in WHERE clause. If @IDCODE1 then lose the WHERE clause on the ICODE column OTHERWISE include the ICODE column and use the @ICODE parameter to filter it. ELSE SELECT FROM tblTABLE WHERE NAME LIKE @NAME AND IDCODE @IDCODE ORDER BY NAME END

Sql if then else statement in where clause free

This SQL Server tutorial explains how to use the IFELSE statement in SQL Server (TransactSQL) with syntax and examples. Description In SQL Server, the IFELSE statement is used to execute code when a condition is TRUE, or execute different code if the condition evaluates to FALSE. SQL if statement in where clause for searching database INNER JOIN tblWeeklyPrices on tblVillas. villaId where If @accomodationFK null Then And regionFK @regionFK IF @sleeps null Then And pricesql if then else statement in where clause SELECT CASE WHEN books. title 'The Hobbit' THEN 'Middleearth' WHEN books. primaryauthor 'Tolkien' THEN 'Middleearth' ELSE 'Earth' END AS locale, books. FROM books Before we examine the special CASE aspect of this statement, lets temporarily remove the CASE to notice that this is an extremely simple SELECT statement on the surface:

IF statement or condition in WHERE clause of SELECT statement in sql server. We cannot use IF statement or condition in WHERE clause of the SELECT statement. It is syntactically incorrect. We can achieve our goal without using if condition in WHERE clause. If you still think sql if then else statement in where clause MySQL: Using IF in a WHERE clause Posted in MySql Last updated Jan. 06, This is then compared with the value 1 which returns true or false for this part of the where condition depending whether the IF function returns 1 or 0. Ideally you should have already filtered with other WHERE statements otherwise it will have to do the IF SQL SERVER How to use if else in where clause. June 28, 2013 by Muhammad Imran. IF ELSE clause is very handy and whenever you need to perform any conditional operation, you can achieve your results using it. But there are some limitations in IF ELSE, and one of the limitations is that you cannot use it in WHERE clause. CASE statements in where clauses are less efficient than boolean cases since if the first check fails, SQL will stop processing the line and continue on. That saves you processing time. Also, always put the more costly statement on the other side of your boolean check. If @CustomerID 0 then I want the result to be WHERE CustID 0 (i. e. return all customers) otherwise I only want certain customers CustID @CustomerID Is this possible? sql ifstatement

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