In MySQL, you can nest a subquery inside the WHERE clause of an outer SQL SELECT statement.. The subquery can be added to further filter the result set using comparison operators like <,>, =, IN or BETWEEN, etc. The database management system executes the Subquery first and then uses it...
SQL Subquery Example: 1) Usually, a subquery should return only one record, but sometimes it can also return multiple records when used with operatorsLIKE IN, NOT IN in the where clause. The query syntax would be like, SELECT first_name, last_name, subject ...
Advanced SQL > Subquery A subquery is a SQL statement that has another SQL query embedded in the WHERE or the HAVING clause. SyntaxThe syntax for a subquery when the embedded SQL statement is part of the WHERE condition is as follows:...
Multiple row operators ALL - compare value to every value returned by the subquery IN - equal to any member in a list ANY - compare value to each value returned by the subquery =--this only works in Access as the ampersand character is not recognised in SQL Server --The string concatenat...
Whether a subquery is correlated or not depends on whether it refers to columns used in its outer query. Self-contained subquery For a self-contained subquery that uses subquery as operand of comparison operators (>, >=, < , <= , = , or ! =), the inner subquery queries only once, ...
Oracle subquery with comparison operators example# The subqueries that use comparison operators e..g, >, >=, <, <=, <>, = often includeaggregate functions, because an aggregate function returns a single value that can be used for comparison in theWHEREclause of the outer query. ...
A subquery is usually added within the WHERE Clause of another SQL SELECT statement. You can use the comparison operators, such as >, <, or =. Subquery Syntax The subquery (inner query) executes before the main query (outer query). ...
in Functions Basic SELECT Statements Filtering Sorting Grouping JOIN Subquery Subquery Nested by WHERE Subquery Nested by FROM Subquery Nested by HAVING Multi-Layer Nested Subquery Alias Set Operations WITH...AS CASE...WHEN OVER Clause Flink OpenSource SQL 1.12 Syntax Reference Flink Opensource SQL ...
This kind of query can also be run with other operators that allow a single value, such as < or >=. WHERE IN Subquery Also, we can use a subquery with an IN operator in the WHERE clause. This is similar to the previous example that used the greater than operator for a single value...
//printf('Connected successfully.');$sql="SELECT ID, NAME, AGE, ADDRESS, SALARY FROM CUSTOMERS WHERE ID IN (SELECT ID FROM CUSTOMERS WHERE SALARY > 2000)";printf("Table records: \n");if($result=$mysqli->query($sql)){while($row=mysqli_fetch_array($result)){printf("Id: %d, NAME...