(Structured Query Language) , ANSI. SQL-99, SQL-200n . ANSI-92. , , . , ANSI. , , , . , , .
, SQL (). , , , , , . , SQL . , .
, , . , . .
, , , .. , Name. . , . .
( ) , , , , .. . , - ( ), .
, , . (query).
, . , SQL, .
SQL, (Data Manipulation Language DML):
SELECT ;
INSERT ;
|
|
|
UPDATE ;
DELETE ;
, , - . SELECT . , SELECT, JOIN UNION. , .
SQL :
1.
SELECT .[ ], .[ ], .[ ], .[ ], .[ ], .[ ], .[ ], .[ ], .[ ]
FROM , INNER JOIN ON .[ ]=.[ ]
WHERE (((.[ ])=""));
2.
SELECT .[ ], .[ ], .[ ], .[ ], .[ ], .[ ]
FROM , INNER JOIN ON .[ ] = .[ ]
WHERE (((.)=[ ]));
3.
SELECT .[ ], .[ ], ., .[ ], ., .[ ], .
FROM , INNER JOIN ON .[ ] = .[ ]
WHERE (((.)=[ ]))
.
