效能提示：當兩個資料表有複雜的比對特性時，MERGE 陳述式的條件式行為表現最佳 ... 註：SQL Server (從2008 開始) ... INSERT INTO table_A (col, . ... <看更多>

This should work: merge into proj.person_registry pr using ( select 42 as id 'xyz' as code, 'Dent' as name, 'Arthur' as firstname, 'male' as cl_gender ... ... <看更多>

Enter test data into your Dev environment, and then generate statements from the Dev tables so that you can always reproduce your test database with valid ... ... <看更多>

Don't use merge, it has always had performance problems on large ... an on going issue since the key word merge was put into SQL Server. ... <看更多>

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