mysql – 列出共享完全相同列名的所有表

我有点像SQL的新手,但是一直在使用SQLFiddle来改进它.如果您想查找并列出所有具有在不同表中共享的公共列或列的表(例如,表1,2,3和4具有客户字段,而表2和4具有学生,该怎么办?你怎么用
MySQL做到这一点?让我们说你有100个表而不是2个表.

例如.

Table 1:

ID | Customer | Pet |

Table 2:

ID | Customer | Food | Student |

Table 3:

ID | Customer | Activity |

Table 4:

ID | Customer | Cost | Student

预期结果:

Table_NAME | COLUMN_NAME

Table 1, Table 2, Table 3, Table 4 | ID

Table 1, Table 2, Table 3, Table 4 | CUSTOMER

Table 2, Table 4 | Student

我试过以下两个并没有给我我想要的东西:

select Table_NAME, COLUMN_NAME, Count(*)
from INFORMATION_SCHEMA.columns
GROUP BY Table_NAME
HAVING COUNT(*) > 1


SELECT Table_Name, Column_Name
FROM INFORMATION_SCHEMA.columns
WHERE TABLE_NAME IN
(     SELECT TABLE_NAME
      FROM INFORMATION_SCHEMA.columns
      GROUP BY TABLE_NAME
      HAVING COUNT(*) > 1
 )
 ORDER BY TABLE_NAME

最佳答案 尝试:

select GROUP_CONCAT(TABLE_NAME) TABLE_NAME, COLUMN_NAME
from INFORMATION_SCHEMA.COLUMNS
GROUP BY COLUMN_NAME
HAVING COUNT(*) > 1

上面的查询将提供数据库中所有模式的表/列信息.

如果要将数据限制为特定模式,则;

select GROUP_CONCAT(TABLE_NAME) TABLE_NAME, COLUMN_NAME
from INFORMATION_SCHEMA.COLUMNS
where TABLE_SCHEMA = 'your_schema'
GROUP BY COLUMN_NAME
HAVING COUNT(*) > 1
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