本文介绍了在表之间使用INNER JOIN更新查询？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
错误：Invallid对象名称p
Error: Invallid Object Name p
UPDATE p
SET Mail_Status = 'Sent'
FROM tbl_plan p
INNER JOIN tbl_Assignment a ON a.Plan_ID = p.Plan_ID
WHERE (DATEDIFF(dd, { fn NOW() }, Date) = 2) AND (Mail_Status IS NULL)推荐答案
DECLARE @Table1 AS TABLE (Col1 INT, Col2 INT, Col3 VARCHAR(100))
INSERT INTO @Table1 (Col1, Col2, Col3)
SELECT 1, 11, 'First'
UNION ALL
SELECT 11, 12, 'Second'
UNION ALL
SELECT 21, 13, 'Third'
UNION ALL
SELECT 31, 14, 'Fourth'
DECLARE @Table2 AS TABLE(Col1 INT, Col2 INT, Col3 VARCHAR(100))
INSERT INTO @Table2 (Col1, Col2, Col3)
SELECT 1, 21, 'Two-One'
UNION ALL
SELECT 11, 22, 'Two-Two'
UNION ALL
SELECT 21, 23, 'Two-Three'
UNION ALL
SELECT 31, 24, 'Two-Four'
SELECT *
FROM @Table1
SELECT *
FROM @Table2
UPDATE @Table1
SET Col2 = t2.Col2,
Col3 = t2.Col3
FROM @Table1 t1
INNER JOIN @Table2 t2 ON t1.Col1 = t2.Col1
WHERE t1.Col1 IN (21, 31)
SELECT *
FROM @Table1
SELECT *
FROM @Table2
UPDATE p
SET Mail_Status = 'Sent'
FROM tbl_plan p ,tbl_Assignment a
where a.Plan_ID = p.Plan_ID and (DATEDIFF(dd, { fn NOW() }, Date) = 2) AND (Mail_Status IS NULL)
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