What is basic SELECT statement?

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SELECT Statement
A SELECT statement retrieves data from the database. With SELECT statement PROJECTION, SELECTION and JOIN can be performed on database tables.
As data in relational database is stored in TABLES. TABLE has ROW and COLUMN structure. With SELECT statement all rows and all columns can be retrieved, this is known as PROJECTION. But, if rows and columns are retrieved on the basis of some condition, it is known as SELECTION. And suppose if some information is needed and that is stored in two or more different tables but are related, use JOINS to retrieve it from two or more tables.
In SQL, basic SELECT statements are as follows:
SELECT * FROM [table_name];
SELECT[column1][column2][column3],..... FROM  [table_name];
SELECT and FROM are known as clauses. 
SELECT clause allows to specify columns to be selected from the database table. 
FROM clause allows to specify table name that has those column to be selected.
Semicolon at the end of SELECT statement specify the end of SQL statemen…

What is SQL?

SQL

SQL stands for Structured Query Language.

SQL allows to access and manipulate data stored in relational database.

In IT industry, it is also known as See-Quell.

There are many implementation of SQL are available. Following are some of the DBs that provides SQL:


MySQL , SQL Server, MS Access, Oracle, Postgres etc.







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