Is equal condition in MySQL?
Example – Equality Operator In MySQL, you can use the = operator to test for equality in a query. The = operator can only test equality with values that are not NULL. For example: SELECT * FROM contacts WHERE last_name = ‘Johnson’;
How do I do an if statement in MySQL?
MySQL IF Statement
- 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.
- Second, specify the code that will execute if the condition evaluates to TRUE .
Does SQL have if statements?
IF statements can be used to conditionally enter into some logic based on the status of a condition being satisfied. The IF statement is logically equivalent to a CASE statements with a searched-case-statement-when clause.
What does <=> mean in SQL?
equal to
<=> is MySQL’s null-safe “equal to” operator. From the manual: NULL-safe equal. This operator performs an equality comparison like the = operator, but returns 1 rather than NULL if both operands are NULL, and 0 rather than NULL if one operand is NULL.
How do you use IF ELSE statements 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 difference between if and if-else in PHP?
In PHP we have the following conditional statements: if statement – executes some code if one condition is true. if…else statement – executes some code if a condition is true and another code if that condition is false. if…elseif…else statement – executes different codes for more than two conditions.
What is equal operator in MySQL with example?
equal operator. MySQL equal operator performs an equality comparison. Syntax: =. MySQL Version: 5.6. Example: MySQL equal operator. The following MySQL statement checks if 1 is equal to 1, if 1 is equal to 2, if NULL is equal to NULL, if NULL is equal to 3 and if 3 is equal to .
What is the difference between if () and if () function in MySQL?
Note: There is an another IF statement, which differs from the IF () function described in MySQL procedure chapter. In the following statement, since 1 is less than 3, so the IF () returns the third expression, i.e. false. In the following example the MySQL statement returns the third expression ‘false’ since the first expression is not true.