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15 wrz 2008 · How do I perform an IF...THEN in an SQL SELECT statement? For example: The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server. CASE. WHEN Obsolete = 'N' or InStock = 'Y' THEN 1. ELSE 0. END AS bit) as Saleable, * You only need to use the CAST operator if you want the result as a Boolean value.
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.
This 3-page SQL Cheat Sheet provides you with the most commonly used SQL statements. Download the SQL cheat sheet, print it out, and stick to your desk.
Summary: in this tutorial, you will learn SQL Server IF...ELSE statement to control the flow of program. The IF...ELSE statement is a control-flow statement that allows you to execute or skip a statement block based on a specified condition. The following illustrates the syntax of the IF statement: BEGIN . { statement_block }
30 paź 2023 · In this tutorial, we will explore the magic of using SQL if statement in SELECT within your database queries. This technique is like a superpower that allows us to adjust and tailor the information we get from a database based on specific conditions or rules we set.
This is most easily accomplished in all versions of SQL Server using the CASE statement, which acts as a logical IF...THEN...ELSE expression and returns various values depending on the result. In this example below, we want to return an additional locale column that specifies whether our book takes place in Middle-earth or regular old Earth.
2 cze 2023 · The CASE statement allows you to perform an IF-THEN-ELSE check within an SQL statement. It’s good for displaying a value in the SELECT query based on logic that you have defined. As the data for columns can vary from row to row, using a CASE SQL expression can help make your data more readable and useful to the user or to the application.
