SqlServer怎么比较两个表的字段是不是一致

Posted 2023-03-13

参考技术A --2个表比较
DECLARE @SourceTableName VARCHAR(100)
DECLARE @DestTableName VARCHAR(100)

SET @SourceTableName = 'TableA'
SET @DestTableName = 'TableB'

SELECT A.TABLE_NAME AS SourceTable
,A.COLUMN_NAME AS SourceColumn
,A.DATA_TYPE AS SourceType
,B.TABLE_NAME AS DestTable
,B.COLUMN_NAME AS DestColumn
,B.DATA_TYPE AS DestType
FROM (SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = @SourceTableName) A
FULL OUTER JOIN (SELECT * FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = @DestTableName) B
ON A.COLUMN_NAME = B.COLUMN_NAME AND A.DATA_TYPE = B.DATA_TYPE
WHERE A.TABLE_NAME IS NULL OR B.TABLE_NAME IS NULL