mysql ifselect

1. How do you put if in a select statement?
2. How do I do an if statement in MySQL?
3. How do I pass an IF condition in SQL query?
4. How do I add an if else condition in SQL Select query?
5. How do you write an if statement in SQL Select query?
6. Can we use select query in case statement?
7. What is delimiter in MySQL?
8. How do you write an IF THEN statement in SQL?
9. Is true in MySQL?
10. Can I use case in where clause SQL Server?
11. What is the difference between delete and truncate statement in SQL?
12. How do you compare in SQL?

How do you put if in a select statement?

IF… Else statement

1. If the condition evaluates to True, then T-SQL statements followed by IF keyword will be executed.
2. If the condition evaluates to False, then T-SQL statements followed by ELSE keyword will be executed.

How do I do an if statement in MySQL?

MySQL IF Statement

1. First, specify a condition to execute the code between the IF-THEN and END IF . If the condition evaluates to TRUE , the statements between IF-THEN and END IF will execute. ...
2. Second, specify the code that will execute if the condition evaluates to TRUE .

How do I pass an IF condition in SQL query?

SQL Server: IF...ELSE Statement

1. Description. In SQL Server, the IF...ELSE statement is used to execute code when a condition is TRUE, or execute different code if the condition evaluates to FALSE.
2. Syntax. ...
3. Note. ...
4. Example - IF...ELSE Statement. ...
5. Example - No ELSE condition. ...
6. Example - Nested IF...ELSE Statements.

How do I add an if else condition in SQL Select query?

How to add IF-ELSE logic to SQL queries

1. case when condition1 then result1 when condition2 then result2 when condition3 then result3 else result end as columnname;
2. select game, year, case when game like 'sonic%' then 'Y' else 'N' end as 'Sonic Series' from sega_sales order by 'Sonic Series' desc.
3. select game, global, case when global >= 4.

How do you write an if statement in SQL Select query?

Use a CASE statement: SELECT CASE WHEN (Obsolete = 'N' OR InStock = 'Y') THEN 'Y' ELSE 'N' END as Available etc... See working demo: if then without case in SQL Server.

Can we use select query in case statement?

The CASE expression is a conditional expression: it evaluates data and returns a result. The result it returns is based on whether the data meets certain criteria. This expression can be used in SELECT , UPDATE , and DELETE statements or in WHERE , IN , LIKE , ORDER BY , and HAVING clauses.

What is delimiter in MySQL?

MySQLMySQLi Database. Delimiters can be used when you need to define the stored procedures, function as well as to create triggers. The default delimiter is semicolon. You can change the delimiters to create procedures and so on.

How do you write an IF THEN statement in SQL?

Syntax. IF (a <= 20) THEN c:= c+1; END IF; If the Boolean expression condition evaluates to true, then the block of code inside the if statement will be executed. If the Boolean expression evaluates to false, then the first set of code after the end of the if statement (after the closing end if) will be executed.

Is true in MySQL?

MySQL does not contain built-in Boolean or Bool data type. They provide a TINYINT data type instead of Boolean or Bool data types. MySQL considered value zero as false and non-zero value as true. If you want to use Boolean literals, use true or false that always evaluates to 0 and 1 value.

Can I use case in where clause SQL Server?

According to MS SQL Docs, a CASE statement can be used throughout the SELECT statement. CASE can be used in any statement or clause that allows a valid expression. For example, you can use CASE in statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as select_list, IN, WHERE, ORDER BY, and HAVING.

What is the difference between delete and truncate statement in SQL?

Delete and truncate both commands can be used to delete data of the table. Delete is a DML command whereas truncate is DDL command. Truncate can be used to delete the entire data of the table without maintaining the integrity of the table. On the other hand , delete statement can be used for deleting the specific data.

How do you compare in SQL?

A comparison (or relational) operator is a mathematical symbol which is used to compare two values. Comparison operators are used in conditions that compares one expression with another. The result of a comparison can be TRUE, FALSE, or UNKNOWN (an operator that has one or two NULL expressions returns UNKNOWN).