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where select.




WHERE , . , , . , , , , LIKE, NULL, IN .

SELECT (*/(.1),(.2)/)- .

FROM (.1),(.2) - ()

WHERE ( ())

 

SELECT , , FROM .

, :

<1> < > <2>

, , , , . .

:

SELECT Rashod.*, Tovary.Cena

FROM Rashod, Tovary

WHERE Rashod.Tovar=Tovary.Tovar, Rashod.Kolvo<20

 

:

1) , SELECT, .

2) , WHERE.


SELECT .

. , , ORDER BY. . , ( ). , , . . ( . ).

SELECT Pokup, Data_Rash, Kolvo, Tovar

FROM Rashod

ORDER BY Pokup, Data_Rash

WHERE :

SELECT Pokup, Data_Rash, Kolvo, Tovar

FROM Rashod

WHERE Tovar=

ORDER BY Pokup

. - DESC.

.

, . SELECT DISTINCT.

SELECT DISTINCT/ALL {*/(.1),(.2)}

FROM (.1),(.2)

, ALL.

, , :

SELECT DISTINCT Tovar

FROM Rashod

DISTINCT , .. DISTINCT , . :

- AVG () . - MAX ()

- MIN () - . - SUM () -

- COUNT ()

- COUNT (*)

1)

SELECT COUNT (DISTINCT Pokup) as COUNT Pokup

FROM Rashod

2)

SELECT SUM (R.Kolvo*T.Cena) as ABS_CENA

FROM Rashod R, Tovary T

WHERE (R.Tovar=T.Tovar) AND (R.DAT_RAS=18.03.10)

3)

SELECT R.Tovar, SUM (R.Kolvo*T.Cena)

FROM Rashod R, Tovary T

WHERE (R.Tovar=T.Tovar)

Group By R.Tovar, R.Data_Rash






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