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SQL
| Statement | Description |
| SELECT |
query data SELECT * FROM table X; |
| UNION |
combine result for two or more questions SELECT * FROM table X UNION SELECT * FROM table Y; |
| AS |
display results as other name than column name SELECT * AS lol FROM table X; |
| WHERE |
return data matching specific condition SELECT * FROM table X WHERE username='lol'; |
| LIKE |
return data matching a wildcard condition (%) SELECT * FROM table WHERE username LIKE %lol%; |
| UPDATE |
update a column in all matching rows with a new value UPDATE table set username='lol' WHERE username='none'; |
| INSERT |
insert rows of data into a table INSERT INTO users (username,userage) VALUES ('lol','25'); |
| DELETE |
delete all rows of data matching a condition from the table DELETE FROM users WHERE username='lol'; |
| EXEC |
execute command EXEC xp_cmdshell {command} |
| DROP |
drops a table DROP TABLE test; |