文件名称：增加一列-SQL语言基础
文件大小：5.26MB
文件格式：PPT
更新时间：2024-05-15 13:25:08
SQL 基础
增加一列 * DEPT30 EMPNO ENAME ANNSAL HIREDATE ------ ---------- -------- 7698 BLAKE 34200 01-MAY-81 7654 MARTIN 15000 28-SEP-81 7499 ALLEN 19200 20-FEB-81 7844 TURNER 18000 08-SEP-81 ... DEPT30 EMPNO ENAME ANNSAL HIREDATE ------ ---------- -------- 7698 BLAKE 34200 01-MAY-81 7654 MARTIN 15000 28-SEP-81 7499 ALLEN 19200 20-FEB-81 7844 TURNER 18000 08-SEP-81 ... JOB 新列 “…为表DEPT30 增加一个新列…” JOB * Adding a Column The graphic adds the JOB column to DEPT30 table. Notice that the new column becomes the last column in the table.