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比较操作符等于(=)不等于()大于(>)小于(, != (NOT EQUAL)SELECT * FROM PRODUCTS_TBL WHERE COST != 29.99;SELECT * FROM PRODUCTS_TBL WHERE COST 29.99;NOT BETWEENSELECT * ... 阅读全文
posted @ 2016-01-21 10:59
青山绿水6791
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MySQLEMPLOYEE_TBLINSERT INTO EMPLOYEE_TBL VALUES('311549902','STEPHENS','TINA','DAWN','RR 3 BOX 17A','GREENWOOD','IN','47890','3178784465',NULL);INSER... 阅读全文
posted @ 2016-01-21 00:57
青山绿水6791
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MySQLCREATE TABLE EMPLOYEE_TBL( EMP_ID VARCHAR(9) NOT NULL, LAST_NAME VARCHAR(15) NOT NULL, FIRST_NAME VARCHAR(15) NOT... 阅读全文
posted @ 2016-01-21 00:53
青山绿水6791
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