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Update README.md #23

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3 changes: 3 additions & 0 deletions README.md
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Expand Up @@ -120,6 +120,9 @@ Pull requests are welcome. Enjoy!
* `UPDATE` table_name `SET` column1 = value1, column2 = value2 `WHERE` condition;
* `UPDATE` table_name `SET` column_name = value;

### **Update** from Multiple Tables
* UPDATE table_name1 SET table_name1.col1= table2.col1 from table2 left join table3 on table2.id=table3.id where table2.name in (select name from table3)

### **DELETE**: used to delete existing records/rows in a table
* `DELETE FROM` table_name `WHERE` condition;
* `DELETE` * `FROM` table_name;
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