Where clause
Purpose
Specifies the conditions that rows must meet to be retrieved.
Syntax
WHERE expr1 rel_operator expr2
where:
expr1
is either a column name, literal, or expression.
expr2
is either a column name, literal, expression, or subquery. Subqueries must be enclosed in parentheses.
rel_operator
is the relational operator that links the two expressions.
Example
This Select statement retrieves the first and last names of employees that make at least $20,000.
SELECT last_name, first_name FROM emp WHERE salary >= 20000
See also
