MAX

Description

Aggregate function.

The MAX() function calculates the maximum value across a group of values.

Syntax

> MAX(expr)

Arguments

Arguments	Description
expr	Any expression

Returned Value

Returns the maximum value of expr. MAX() may take a string argument, in such cases, it returns the maximum string value.

Examples

```sql

drop table if exists tbl1; drop table if exists tbl2; create table tbl1 (col_1a tinyint, col_1b smallint, col_1c int, col_1d bigint, col_1e char(10) not null); insert into tbl1 values (0,1,1,7,"a"); insert into tbl1 values (0,1,2,8,"b"); insert into tbl1 values (0,1,3,9,"c"); insert into tbl1 values (0,1,4,10,"D"); insert into tbl1 values (0,1,5,11,"a"); insert into tbl1 values (0,1,6,12,"c");

select max(col_1d) from tbl1; +-------------+ | max(col_1d) | +-------------+ | 12 | +-------------+

select max(col_1c) as m1 from tbl1 where col_1d<12 group by col_1e; +------+ | m1 | +------+ | 5 | | 2 | | 3 | | 4 | +------+ ```