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select employee_id,last_name,job_id,salary from employees where salary ANY : check minimum value = ANY : IN or "or" > ALL : check the maximum value < ALL : check the Minimum value

select employee_id,last_name,job_id,salary from employees where salary ANY : check minimum value = ANY : IN or "or" > ALL : check the maximum value < ALL : check the Minimum value

Enclose subqueries in parantheses.Place subqueries on the right side of the comparison condition.The ORDER BY clause in the subquery is not needed unless you re performing TOP-N analysis.Using single-row operators with single-row subqueries, and use multiple-row operators with multiple-row subqueries.

Enclose subqueries in parantheses.Place subqueries on the right side of the comparison condition.The ORDER BY clause in the subquery is not needed unless you re performing TOP-N analysis.Using single-row operators with single-row subqueries, and use multiple-row operators with multiple-row subqueries.

SELECT select_list FROM table WHERE expr operator (SELECT select_list FROM table);The subquery(inner query) executes once before the main query(outer query).The result of the subquery is used by the main query. You can place the subquery in a number of SQL clauses, including the following:WHERE clauseHAVING clauseFROM clause

SELECT select_list FROM table WHERE expr operator (SELECT select_list FROM table);The subquery(inner query) executes once before the main query(outer query).The result of the subquery is used by the main query. You can place the subquery in a number of SQL clauses, including the following:WHERE clauseHAVING clauseFROM clause

When a join condition is invalid or omitted completely, the result is a Cartesian product, in which all combinations of rows are displayed. All rows in the first table are joined to all rows in the second table. A cartesian product is formed when: - A join coindition is omitted - A join condition is invalid - All rows in the first table are joined to all rows in the second table To avoid a Carte..

When a join condition is invalid or omitted completely, the result is a Cartesian product, in which all combinations of rows are displayed. All rows in the first table are joined to all rows in the second table. A cartesian product is formed when: - A join coindition is omitted - A join condition is invalid - All rows in the first table are joined to all rows in the second table To avoid a Carte..

In SQL: 1999, the join of two ables returning only matched rows is called inner join. A join between two tables that returns the results of the inner join as well as the unmatched rows from the left(or right) tables is called a left(or right) outer join. A join between two tables that returns the results of an inner join as well as the results of a left and right join is a full outer join.

In SQL: 1999, the join of two ables returning only matched rows is called inner join. A join between two tables that returns the results of the inner join as well as the unmatched rows from the left(or right) tables is called a left(or right) outer join. A join between two tables that returns the results of an inner join as well as the results of a left and right join is a full outer join.