Some of The Most Important SQL Commands

Operator

Operator Description
= Equal
<> Not equal. (Note: In some versions of SQL this operator may be written as !=)
> Greater than
< Less than
>= Greater than or equal
<= Less than or equal
BETWEEN Between an inclusive range
LIKE Search for a pattern
IN To specify multiple possible values for a column

Test for NULL Values

SELECT column_names

FROM table_name

WHERE column_name IS (NOT) NULL;

Cont’d[SQL UPDATE]