Question

我有81个表，我想找到匹配的列并输出如下列表：

"columnName" found in 3 tables:
table1
table2
table3

"columnName2" found in 4 tables:
table1
table3
table4
table5

Answer 1

表INFORMATION_SCHEMA.COLUMNS是一个系统表，其中包含所有表的所有列。您可以从中选择它来查看它。

对于你的问题，你应该试试这个：

select I.Column_name,
table_name,
table_count
from INFORMATION_SCHEMA.COLUMNS I
inner join 
(
Select Column_name,
count(*) as table_count
from INFORMATION_SCHEMA.COLUMNS
group by Column_name) as T on T.Column_name = I.Column_name

您将拥有一个表，其中包含每个column_name，表和table_count列中的计数。

我不知道如何输出列表。你应该把它放在Excel上，如果你想格式化我猜...

告诉我你是否有问题！

Answer 2

查询下方应该会给你想要的结果。如果您遇到任何问题，请告诉我。如果要特定于单个数据库，可以修改脚本

此查询为您提供列名称 - 已删除的表名称 - 表格数量

SELECT t.CNAME AS ColumnName, STUFF(
(SELECT ',' + S.TNAME
FROM 
(
    SELECT  C.NAME AS CNAME , T.NAME AS TNAME
    FROM SYS.OBJECTS AS T
    JOIN SYS.COLUMNS AS C
    ON T.OBJECT_ID=C.OBJECT_ID 
    WHERE T.TYPE_DESC='USER_TABLE' 
)s
WHERE s.CNAME = t.CNAME
FOR XML PATH('')),1,1,'') AS TablesUsed,
COUNT(t.TNAME)
FROM 
(
    SELECT  C.NAME AS CNAME , T.NAME AS TNAME
    FROM SYS.OBJECTS AS T
    JOIN SYS.COLUMNS AS C
    ON T.OBJECT_ID=C.OBJECT_ID 
    WHERE T.TYPE_DESC='USER_TABLE' 
)t
GROUP BY t.CNAME
HAVING COUNT(t.TNAME) > 1
ORDER BY COUNT(t.TNAME) DESC

查找具有匹配列的所有表

2 个答案: