不一樣數據庫中查詢前幾條記錄的用法(SQL Server/MYSQL /Oracle/Postgresql)

SQL在不一樣數據庫中查詢前幾條記錄的用法分類 1. orACLE  Select * FROM TABLE1 Where ROWNUM<=Nsql 2. INFORMIX  Select FIRST N * FROM TABLE1數據庫 3. DB2  Select * ROW_NUMBER() OVER(ORDER BY COL1 DESC) AS ROWNUM Where ROWNUM<=N

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