假设我们有一个数据库“ web”,我们需要获取所有具有特定列“ StudentFirstName”的表。
为此,下面是查询-
mysql> select myColumnName.table_name from information_schema.columns myColumnName where myColumnName.column_name = 'StudentFirstName' and table_schema='web';
这将产生以下输出-
+---------------+ | TABLE_NAME | +---------------+ | demotable109 | | demotable297 | | demotable335 | | demotable395 | | demotable418 | | demotable425 | | demotable436 | +---------------+ 7 rows in set (0.14 sec)
因此,以上表格的列名称之一为“ StudentFirstName”。
让我们检查任何表的描述以查找列名“ StudentFirstName”-
mysql> desc demotable297;
这将产生以下输出,其中显示列名称之一为“ StudentFirstName”-
+------------------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +------------------+--------------+------+-----+---------+-------+ | StudentId | int(11) | YES | | NULL | | | StudentFirstName | varchar(100) | YES | | NULL | | | StudentLastName | varchar(100) | YES | | NULL | | +------------------+--------------+------+-----+---------+-------+ 3 rows in set (0.01 sec)