What does mod in sql mean?

MOD in SQL is the operator that calculates the remainder. Usage: MOD(x, y), where x is the dividend and y is the divisor. Returns the remainder after dividing x by y, which is always a nonnegative number. Use cases include calculating the day of the week, checking parity, and detecting whether a number is a multiple.

#What does MOD mean in SQL?

MOD is an operator in SQL that is used to calculate the remainder between two numbers.

Usage:

<code>MOD(x, y)</code>

Where:

• x is the dividend
• y is the divisor

Return value:

Returns the remainder after dividing x by y.

Example:

<code>SELECT MOD(10, 3); -- 返回 1
SELECT MOD(15, 4); -- 返回 3</code>

Note:

##If y is 0, MOD will return NULL.
• The result of MOD is the same as the remainder of division, but the result of MOD is always non-negative.

Application scenarios:

MOD operator is usually used in the following scenarios:

Calculate the day of the week:
• MOD (DATE('now'), 7) Returns the day of the week the current date is (0 is Sunday, 1 is Monday, and so on).
Check parity:
• MOD(x, 2) Returns 0 if x is an even number and 1 if x is an odd number.
Check whether it is a multiple of a certain number:
• MOD(x, y) = 0 means x is a multiple of y.

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