SHOW INDEXES [FROM|IN] 语法图 示例 MySQL 兼容性 另请参阅 SHOW INDEXES [FROM|IN] SHOW INDEXES [FROM|IN] 语句用于列出指定表上的索引。SHOW INDEX [FROM | IN] 和 SHOW KEYS [FROM | IN] 是该语句的别名。包含该语句提供了 M...
SHOW INDEXES [FROM|IN] 语法图 示例 MySQL 兼容性 另请参阅 SHOW INDEXES [FROM|IN] SHOW INDEXES [FROM|IN] 语句用于列出指定表上的索引。SHOW INDEX [FROM | IN] 和 SHOW KEYS [FROM | IN] 是该语句的别名。包含该语句提供了 ...
SHOW INDEXES [FROM|IN] Synopsis Examples MySQL compatibility See also SHOW INDEXES [FROM|IN] The statement SHOW INDEXES [FROM|IN] lists the indexes on a specified table. Th...
FLOOR() Description Syntax Arguments Examples FLOOR() Description The FLOOR() function returns the largest round number that is less than or equal to the number. S...
\= Description Syntax Examples \= Description The = operator returns true only if the left-hand operand is equal to the right-hand operand. Syntax > SELECT x = ...
<= Description Syntax Examples <= Description The <= operator returns true only if the left-hand operand is less than or equal to the right-hand operand. Syntax >...
UTC_TIMESTAMP() Description Syntax Arguments Examples Constraints UTC_TIMESTAMP() Description Returns the current UTC date and time as a value in YYYY-MM-DD hh:mm:...