03 - SQL Syntax

Syntax means following set of rules and patterns, even for SQL one has to follow the syntax. SQL is case in-sensitive, that is keyword SELECT and select is same for SQL. Every SQL command should end with a semi-colon (;).

If the syntax is not proper, then executing the command would result in syntax error. 


SQL SELECT Command example:

            SELECT col1, col2, col3,….. 

            FROM table_name;



Consider you have to select columns from a table, (this is most used command in SQL).



The above command would result in the SQL implementation (here MYSQL) to wait for the ending command that is semicolon (;). Once you give the semicolon the command would be executed. 



mysql> select * from employee


    -> ;

Empty set (0.00 sec)

In the above screenshot, you can see how MySQL executed the command only after ‘;’ was provided.

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