american headway 3 book pdf
3.Giao_trinh_SQL_va_PL_Sql.pdf
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06/08/2012, 15:21
... -28- 03- 2001 28- 03- 2001 28- 03- 2001 28- 03- 2001 28- 03- 2001 LAST_DAY(S -31 - 03- 2001 31 - 03- 2001 31 - 03- 2001 31 - 03- 2001 31 - 03- 2001 HIREDATE -02-04-1981 03- 12-1981 17-12-1980 09-12-1982 12-01-19 83 ... -9.129 032 3 241.206 539 -9.129 032 3 2 43. 367829 -9.129 032 3 Ví dụ hàm ADD_MONTHS(d,n) SELECT HIREDATE, ADD_MONTHS(HIRE ,3) , ADD_MONTHS(HIREDATE, -3) FROM EMP WHERE DEPTNO=20; HIREDATE -02-04-1981 03- 12-1981 ... 08-09-1981 03- 12-1981 22-02-1981 03- 12-1981 17-12-1980 09-12-1982 12-01-19 83 23- 01-1982 1250 1600 1500 950 1250 30 00 800 30 00 1100 130 0 1400 30 0 500 30 30 30 30 30 20 20 20 20 10 JOB ANALYST...
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