ID:181-15-1729

A complex SQL query is a combination of many joins and subqueries. SQL can be as complicated as you want. Complex SQL is the use of SQL queries that go beyond the standard SQL of using the SELECT and WHERE commands. Complex SQL often involves using complex joins and sub-queries, where queries are nested in WHERE clauses. Complex queries frequently involve heavy use of AND and OR clauses. These queries make it possible to perform more accurate searches of a database.