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How does in clause work in MySQL?
WHERE Clause in MySQL is a keyword used to specify the exact criteria of data or rows that will be affected by the specified SQL statement. The WHERE clause can be used with SQL statements like INSERT, UPDATE, SELECT, and DELETE to filter records and perform various operations on the data.
What is the use of in clause?
IN operator allows you to easily test if the expression matches any value in the list of values. It is used to remove the need of multiple OR condition in SELECT, INSERT, UPDATE or DELETE. You can also use NOT IN to exclude the rows in your list.
How to use MySQL if statement in SELECT query?
This tutorial explains the usage of MySQL IF and IF ELSE Statements in Select queries with syntax and practical programming examples: MySQL provides an IF () function which is a flow control function and depending on the condition specified and its evaluation to true or false, the rest of the statement executes.
When to use IF THEN ELSE statement in MySQL?
MySQL IF-THEN-ELSE statement In case you want to execute other statements when the condition in the IF branch does not evaluate to TRUE, you can use the IF-THEN-ELSE statement as follows: IF condition THEN statements; ELSE else-statements; END IF; Code language: SQL (Structured Query Language) (sql)
What is the syntax of the if statement in SQL?
The IF-THEN statement allows you to execute a set of SQL statements based on a specified condition. The following illustrates the syntax of the IF-THEN statement: IF condition THEN statements; END IF; Code language: SQL (Structured Query Language) (sql)
When to use if statment in where clause?
I recently needed to use an IF statment in a WHERE clause with MySQL. This isn’t the most ideal situation and should probably be avoided normally but we needed to do it for one reason or another and this post shows how to do it. So as an example, the first query below would return 1 and the second 0: