This is used when you want to insert new record into database table.
You may write this statement in two different styles.
INSERT INTO my_table VALUES (value1, value2,...)
This is used when you don't want to specify column names during insert operation. so you have to specify the values for columns in same sequence as they appear in database table.
INSERT INTO my_table(column1,column4) VALUES (value1, value4)
This is used when you exactly want to specify column names for which values will be inserted during insert operation.
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