SQL Command Syntax

Select Command

SELECT columnnames
FROM table_name
or

SELECT * FROM table_name 

Select Command with Where Clause

SELECT select_list FROM table_list
[WHERE search_conditions]

Order by in Select Command

SELECT columns
FROM tables
WHERE yourcondition
ORDER BY column ASC/DESC;

where

ASC indicates ascending order. (default)
DESC indicates descending order.

Comparison Operators

• > (greater than)
• <> not equal
• = equal
• >= greater than or equal to
• <= less than or equal to 

Create Table

CREATE TABLE
[ database_name . [ schema_name ] . | schema_name . ] table_name
( column_name [ NULL | NOT NULL ] [ ,...n ] )

CREATE TABLE table_name
(
column_name1 datatype,
column_name2 datatype,
column_name3 datatype

)

Insert Command

INSERT INTO table_name(column1, column2, column3, ...)Values(Value1,Value2,Value3,...)

INSERT INTO .. SELECT

INSERT INTO First_table(column1, column2, column3, ...)
SELECT (column1, column2, column3, ...)
from Second_table

Update Command

UPDATE
SET column_name = expression [ ,...n ]
FROM [table_source]
WHERE [search_condition]

Delete Command

Delete from table name 

Delete Command with where Condition

Delete from table name 
WHERE [search_condition]