Question

以下脚本有什么问题？我试图找到具有以下列名称的所有表：ItemID，QueryID和CurrencyID。目前，它只给我表中有3列中提到的3列，因此其中一列将丢失。

SELECT TABLE_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE COLUMN_NAME in ('ItemID', 'QueryID', 'CurrencyID')
GROUP BY TABLE_NAME
HAVING COUNT(*) = 2;

Answer 1

如果您希望所有3个匹配以及2个，那么为什么不使用

HAVING COUNT(*) >= 2;

Answer 2

SELECT t.name 
FROM sys.tables t INNER JOIN sys.columns c 
ON t.object_id = c.object_id 
WHERE c.name IN ('ItemID', 'QueryID', 'CurrencyID')
GROUP BY t.name 
HAVING COUNT(DISTINCT c.name) >= 3

Answer 3

避免> / = / >=问题的替代答案：

这只会在找到所有3个时返回一张桌子，但是根据你的问题，wallyk的回答是现场的......如果它适合你，请选择他。

SELECT T.TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES T
WHERE EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS C1 WHERE T.TABLE_NAME=C1.TABLE_NAME AND C1.COLUMN_NAME='ItemID')
AND EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS C2 WHERE T.TABLE_NAME=C2.TABLE_NAME AND C2.COLUMN_NAME='QueryID')
AND EXISTS (SELECT 1 FROM INFORMATION_SCHEMA.COLUMNS C3 WHERE T.TABLE_NAME=C3.TABLE_NAME AND C3.COLUMN_NAME='CurrencyID')

搜索具有3个精确列的表名称

3 个答案: