Can I use if condition in SQL query?

Can I use if condition in SQL query?

Any T-SQL statement can be executed conditionally using IF… ELSE. If the condition evaluates to True, then T-SQL statements followed by IF condition in SQL server will be executed. If the condition evaluates to False, then T-SQL statements followed by ELSE keyword will be executed.

Can we use if statement in SELECT query in MySQL?

The IF() function that can be used in queries is primarily meant to be used in the SELECT portion of the query for selecting different data based on certain conditions, not so much to be used in the WHERE portion of the query: SELECT IF(JQ.

What is the difference between if/then and if/then else statements?

The difference is that IF… THEN shows a condition and asks the web to do a particular action if the condition is present. The IF… THEN….ELSE statement shows a condition and asks the web to do a particular action BUT if that condition is not present then by writing ELSE it tells the web to do something else.

What is stored procedure if else in SQL Server?

SQL Server stored procedure if else. The IF-ELSE statement in SQL Server is a conditional statement that allows to either execute or skip a SQL statement block depending upon the specified condition. To execute an IF-ELSE block in SQL Server, we can use the following syntax.

What is if condition in SQL with example?

Code language: SQL (Structured Query Language) (sql) Each IF statement has a condition. If the condition evaluates to TRUE then the statement block in the IF clause is executed. If the condition is FALSE, then the code block in the ELSE clause is executed. See the following example:

Can you have multiple IF statements in a stored procedure?

The SQL Server also allows using multiple IF statements in a stored procedure. But each IF statement will be independent of other IF statements. It means each IF statement’s boolean expression will be evaluated once in the stored procedure. For better understanding, consider the following example demonstrated below.

Does the if condition affect the performance of Transact-SQL statements?

Unless a statement block is used, the IF or ELSE condition can affect the performance of only one Transact-SQL statement. To define a statement block, use the control-of-flow keywords BEGIN and END. An IF…ELSE construct can be used in batches, in stored procedures, and in ad hoc queries.