MySQL LIMIT Clause

The MySQL LIMIT Clause

The LIMIT clause is used to specify the number of records to return.

The LIMIT clause is useful on large tables with thousands of records. Returning a large number of records can impact performance. Continue reading MySQL LIMIT Clause

MySQL SUBDATE Function

Example

Subtract 10 days from a date and return the date:

SELECT SUBDATE("2017-06-15", INTERVAL 10 DAY);

Definition and Usage

The SUBDATE() function subtracts a time/date interval from a date and then returns the date.

Syntax

SUBDATE(date, INTERVAL value unit)

OR:

SUBDATE(date, days)

Continue reading MySQL SUBDATE Function

MySQL LN Function

Example

Return the natural logarithm of 2:

SELECT LN(2);

Definition and Usage

The LN() function returns the natural logarithm of a number.

Note: See also the LOG() and EXP() functions. Continue reading MySQL LN Function