给定一个列名，如何找到MySQL数据库中的哪些表包含该列？
使用COLUMN_NAME查找数据库中的哪个表包含特定列。让我们首先创建一个表-
mysql> create table DemoTable -> ( -> CustomerId int, -> CustomerName varchar(20), -> CustomerCountryName varchar(100) -> );
以下是查找在哪些表中存在特定列“'CustomerCountryName'”的查询-
mysql> select *from information_schema.columns WHERE COLUMN_NAME = 'CustomerCountryName';
输出结果
这将产生以下输出-
+---------------+--------------+--------------+---------------------+------------------+----------------+-------------+-----------+--------------------------+------------------------+-------------------+---------------+--------------------+--------------------+-----------------+--------------+------------+-------+---------------------------------+----------------+-----------------------+-------+ | TABLE_CATALOG | TABLE_SCHEMA | TABLE_NAME | COLUMN_NAME |ORDINAL_POSITION | COLUMN_DEFAULT | IS_NULLABLE | DATA_TYPE |CHARACTER_MAXIMUM_LENGTH | CHARACTER_OCTET_LENGTH |NUMERIC_PRECISION | UMERIC_SCALE | DATETIME_PRECISION |CHARACTER_SET_NAME | COLLATION_NAME | COLUMN_TYPE | COLUMN_KEY | EXTRA | PRIVILEGES | COLUMN_COMMENT | GENERATION_EXPRESSION | SRS_ID | +---------------+--------------+--------------+---------------------+------------------+----------------+-------------+-----------+--------------------------+------------------------+-------------------+---------------+--------------------+--------------------+-----------------+--------------+------------+-------+---------------------------------+----------------+-----------------------+-------+ | def | sample | demotable189 | CustomerCountryName | 4 | NULL |YES | varchar | 100 | 300 | NULL | NULL | NULL | utf8 | utf8_general_ci | varchar(100) | | |select,insert,update,references | | | NULL | | def | web | DemoTable | CustomerCountryName | 4 | NULL |YES | varchar | 20 | 60 | NULL | NULL |NULL | utf8 | utf8_unicode_ci | varchar(20) | | |select,insert,update,references | | | NULL | | def | web | DemoTable | CustomerCountryName | 3 | NULL |YES | varchar | 100 | 300 | NULL | NULL |NULL | utf8 | utf8_unicode_ci | varchar(100) | | |select,insert,update,references | | | NULL | +---------------+--------------+--------------+---------------------+------------------+----------------+-------------+-----------+--------------------------+------------------------+-------------------+---------------+--------------------+--------------------+-----------------+--------------+------------+-------+---------------------------------+----------------+-----------------------+-------+ 3 rows in set (0.68 sec)
在上方，您可以看到3表中存在“CustomerCountryName”列。