UPDATE . , , WHERE . , SQL , : , , . UPDATE <> SET {<> = <>} [WHERE < >] UPDATE <> SET {<> = (SELECT <> FROM <> WHERE < >)} [WHERE < >] INSERT . . , . SQL - SELECT ( ). , SELECT , . INSERT INTO <> [(< >)] VALUES (< >) INSERT INTO <> [(< >)] (SELECT < > FROM <> WHERE < >) DELETE , . . , , WHERE . SQL DELETE . ( WHERE) . DELETE FROM <> [WHERE < >] DELETE < > FROM < > [WHERE < >]
29. , FULL JOIN CROSS JOIN,
UNION.
FULL JOIN - , .
SQL FULL JOIN
SELECT column_name(s)
FROM table_name1
FULL JOIN table_name2
ON table_name1.column_name=table_name2.column_name
"Persons":
"Orders":
.
:
SELECT Persons.LastName, Persons.FirstName, Orders.OrderNo FROM Persons FULL JOIN Orders ON Persons.P_Id=Orders.P_Id ORDER BY Persons.LastName FULL JOIN - , .SQL FULL JOIN
SELECT column_name(s)
FROM table_name1
FULL JOIN table_name2
ON table_name1.column_name=table_name2.column_name
"Persons":
"Orders":
.
|
|
SELECT Persons.LastName, Persons.FirstName, Orders.OrderNo
FROM Persons
FULL JOIN Orders
ON Persons.P_Id=Orders.P_Id
ORDER BY Persons.LastName
UNION - SELECT.
, SELECT UNION . .
SQL UNION
SELECT column_name(s) FROM table_name1
UNION
SELECT column_name(s) FROM table_name2
: UNION . , UNION ALL.
SQL UNION ALL
SELECT column_name(s) FROM table_name1
UNION ALL
SELECT column_name(s) FROM table_name2
, "" Norway USA.
:
SELECT E_Name FROM Employees_Norway UNIONSELECT E_Name FROM Employees_USA30. . IN NOT IN IN NOT IN SQL . WHERE. , 18. IN:
SELECT S_POSITION, COUNT(S_POSITION) AS [ S_POSITION]
FROM D_STAFF
WHERE S_POSITION IN (22,24)
GROUP BY S_POSITION
HAVING COUNT(S_POSITION)>1
NOT IN>:
SELECT S_POSITION, COUNT(S_POSITION) AS [ S_POSITION]
FROM D_STAFF
WHERE S_POSITION NOT IN (23)
GROUP BY S_POSITION
HAVING COUNT(S_POSITION)>1
, 18, , . , , SELECT, . , - :
SELECT PROFILE_ID, COUNT(PROFILE_ID) AS [ S_POSITION]
FROM D_STAFF_PROFILE
WHERE PROFILE_ID NOT IN (SELECT XD_IID FROM D_PROFILE WHERE P_NAME LIKE'%')
GROUP BY PROFILE_ID , NOT IN, XD_IID, SELECT. D_STAFF_PROFILE. Ԓ. , 21, 22, 23, , .