If we want to update that ord_date in 'neworder' table with '15-JAN-10' which have the difference of ord_amount and advance_amount is less than the minimum ord_amount of 'orders' table the following SQL can be used:Sample table: orders ORD_NUM ORD_AMOUNT ADVANCE_AMOUNT ORD_DATE CUST...
A subquery is an SQL query nested inside a larger query. It can be placed inside various SQL statements to perform complex operations requiring multiple steps. 2.Where can MySQL subqueries be used? Subqueries can be used in the following clauses: SELECT FROM WHERE INSERT UPDATE DELETE SET DO ...
SQL Correlated Subqueries are used to select data from a table referenced in the outer query. The subquery in a correlated subquery is related to the outer query, hence the term "correlated". Each execution of the subquery in the correlated subquery depends on the row processed by the outer ...
A subquery is usually added within the WHERE Clause of another SQL SELECT statement. You can use the comparison operators, such as >, <, or =. The comparison operator can also be a multiple-row operator, such as IN, NOT IN A subquery can be treated as an inner query, which is a SQ...
SQL delete records using subqueries with alias In this page, we are going to discuss, how table aliases( when two or more tables used in a query, then alias makes it easy to read and write with a short name which comes after the table name after the FROM keyword) can be used with ...
The said query in SQL that retrieves information from multiple tables, 'employees', 'departments', and 'locations'. The query returns the employee ID, first name, last name, salary, department name, and city of the employee with the highest salary among those hired between January 1, 2002 ...
The said query in SQL that selects all employees whose salary is greater than that of the employee named 'JONAS' from the 'employees' table. The WHERE clause filters the results to only include rows where the salary is greater than the salary of the employee named 'JONAS' which is ...
The given query in SQL that selects all employees whose salary is equal to the salary of either 'FRANK' or 'BLAZE', but not including their own salary from the 'employees' table. The WHERE clause in the main query, which filters the results to only include rows where the salary is fo...
Multiple row subquery returns one or more rows to the outer SQL statement. You may use the IN, ANY, or ALL operator in outer query to handle a subquery that returns multiple rows. See the details.
In PostgreSQL subquery can be nested inside a SELECT, INSERT, UPDATE, DELETE, SET, or DO statement or inside another subquery. A subquery is usually added within the WHERE Clause of another SQL SELECT statement. You can use the comparison operators, such as >, <, or =. The comparison ope...