What is the difference between delete and truncate of a table?

When we truncate a table the data can not be rolled back, the statement will be committed automatically. But when we delete a  table it can be  committed or rolled back.

DELETE is a DML statement but TRUNCATE is a DDL statement.

Example:

SQL> conn mereba/mereba@orcl
Connected.
SQL> insert into sttms_cust_account(ac_desc) values('Messi Dave');
 1 row created.
SQL> insert into sttms_cust_account(ac_desc) values('AMAN MULU');
 1 row created.
SQL> select * from sttms_cust_account;
    CUST_NO AC_DESC
---------- ------------------------------
         2 Messi Dave
         3 AMAN MULU

--delete a table data
SQL> DELETE FROM sttms_cust_account;
 2 rows deleted.

--roll back it
SQL> ROLLBACK;
 Rollback complete.
SQL> select * from sttms_cust_account;
    CUST_NO AC_DESC
---------- ------------------------------
         2 Messi Dave
         3 AMAN MULU

--delete table data
SQL> DELETE FROM sttms_cust_account;
 2 rows deleted.

--commit it
SQL> commit;  ----permanent change
 Commit complete.
SQL> select * from sttms_cust_account;
 no rows selected

---truncate it
SQL> TRUNCATE TABLE sttms_cust_account;
 Table truncated.
SQL> select * from sttms_cust_account;
 no rows selected
SQL>

PC Gaming Headset Headphone Hook Holder Hanger Mount, Headphones Stand with Adjustable & Rotating Arm Clamp, Under Desk Design, Universal Fit, Built in Cable Clip Organizer EURPMASK

(27325)

$12.99 (as of 30/06/2024 15:53 GMT -04:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

🎧【Clamp-on Headphone Stand】The E-Hold Series headphone holder fits desks from 0.31 inch to 1.57 inch thick, making it a versatile choice for most setups. The spring clamp is a breeze to remove and reattach. No glue, no mess. It blends seamlessly into... read more

LLEVTIC Computer Speakers, Desktop Speakers with 6 Colorful RGB Lights, Volume Control PC Speakers, USB Powered Gaming Speakers with 3.5mm Aux Cable for PC Monitor Laptop Tablet Phone

(1250)

44% Off $26.88 $14.99 (as of 30/06/2024 15:56 GMT -04:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【Full-Range Stereo Sound Quality】Equipped with advanced sound drivers and a full-range 2.0 channel reinforced stereo core, this computer speakers provides the perfect atmosphere for your entertainment activities such as watching movies, gaming, and l... read more

Laptop Cleaning Kit Keyboard Cleaner, Keyboard Cleaning Kit Electronics Cleaning Tool for MacBook iPad Phone iPhone Pro, Brush Tool for Tablet, Computer, PC, TV Camera Lens Computer Vacuum Keyboard

(2045)

$16.98 (as of 30/06/2024 15:53 GMT -04:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

DEEP CLEAN YOUR DEVICE The electronics cleaner kit can effectively deep clean all your electronic devices such as mobile phones, tablets, TVs, etc. It comes with retractable large keyboard brush, polishing cleaning cloth X 2, keycap puller, metal pen... read more

UtechSmart Venus Pro RGB Wireless MMO Gaming Mouse, 16,000 DPI Optical Sensor, 2.4 GHz Transmission Technology, Ergonomic Design, 16M Chroma RGB Lighting, 16 programmable Buttons, Up to 70 Hours

20% Off $59.99 $47.99 (as of 30/06/2024 15:53 GMT -04:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)

【Extensive Fully Programmable Buttons】16 customizable buttons can improve your gaming skills and performance by complex custom button macro coding of reconfiguration and assignment. The button custom function combines multiple keys into one button th... read more