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15 wrz 2008 · From this link, we can understand IF THEN ELSE in T-SQL: IF EXISTS(SELECT * FROM Northwind.dbo.Customers WHERE CustomerId = 'ALFKI') PRINT 'Need to update Customer Record ALFKI' ELSE PRINT 'Need to add Customer Record ALFKI' IF EXISTS(SELECT * FROM Northwind.dbo.Customers WHERE CustomerId = 'LARSE') PRINT 'Need to update Customer Record LARSE ...
12 wrz 2019 · TRY_PARSE isn't a built in function. Also tried a few variations of: SELECT SUBSTRING(Text, 46, 4) AS Year, CASE WHEN CAST(SUBSTRING(Text, 46, 4) AS INT) IS NULL THEN 'Error'. WHEN CAST(Year AS INT) IS NULL < YEAR(GETDATE()) THEN 'In the past'. ELSE 'In the future'. END TEXT.
28 maj 2024 · In this article, we explored different options for executing IF-THEN logic in a SQL SELECT statement. These options include using CASE , IIF() , and CHOOSE() . Furthermore, if we want a query that’s used in almost every dialect, we must choose the CASE statement.
3 wrz 2024 · Syntax. IF boolean_expression { sql_statement | statement_block } [ ELSE { sql_statement | statement_block } ] Arguments. boolean_expression. An expression that returns TRUE or FALSE. If the Boolean expression contains a SELECT statement, the SELECT statement must be enclosed in parentheses. { sql_statement | statement_block }
This tutorial shows you how to use the SQL Server IIF() function to add if-else logic to queries.
26 wrz 2023 · The IF...THEN statement in SQL is often used in conjunction with the CASE expression. The basic syntax goes like this: SELECT . column1, column2, ... CASE WHEN condition1 THEN result1. WHEN condition2 THEN result2. ... ELSE else_result. END AS alias_name. FROM . your_table; column1, column2, etc.:
30 paź 2023 · Different methods to use SQL IF Statement in SELECT. Create Sample Table for Examples. 1. CASE Statement in SELECT. 2. CHOOSE Function. 3. IIF Function. 4. COALESCE Function. 5. Using WHERE Clause with OR/AND. Frequently Asked Questions (FAQs) Summary. Introduction.
