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  The UNION operator is used to JOIN the result-set of two or more two selected statements. Using UNION, multiple SELECT statements can be described, and their results can be combined into a single result set. Each query in a UNION must include the same columns, expressions or combined ...

Rules for SQL commands 1. SQL  commands can be written on multiple line. 2. Clauses are generally used to separate lines to build accuracy through it is not necessary. 3. Tabulation (Index) can be used. 4. Command words cannot divide over the lines. 5. SQL ...

What is SQL? SQL is a structure Query language which is used to manage relational database and perform various operations .It is a standardized programming language working on a  various queries such as INSERT,SEARCH, UPDATE, DELETE  database record. It is pronounced as ...