#统计字符串个数的sql语句 |
# SUM ((LENGTH(content)-LENGTH( REPLACE (content, '123' , '' )))/LENGTH( '123' )) |
SELECT SUM ((LENGTH(content)-LENGTH( REPLACE (content, '123' , '' )))/LENGTH( '123' )) as 'table_name表content字段中的字符串123的个数' from table_name; |