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Compare and contrast TRUNCATE and DELETE for a table.
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Answer / mkjmkumar
Delete :
1. It is a DML
2. Speed is Slow
3. We can Use Where Clause.
4. Check Constraints Before delete.
Truncate
1. It is a DDL.
2. Speed is Fast
3. We Cant Use Where Clause
4. Delete All Rows without check of constraints.
| Is This Answer Correct ? | 7 Yes | 0 No |
Answer / zikku
Truncate command permanently deletes the information from a
table even after rollback we can't get that information.
Delete command temporarily deletes information from a table
after rollback we can get the information back.
| Is This Answer Correct ? | 5 Yes | 0 No |
DELETE: IT IS A DML COMMAND(DATA MANIPULATION LANGUAGE) .
IT DELETES DATA MEANS (DELETES ALL RECORDS) IN TABLE.
BUT STRUCTURE WILL BE THERE.
AND
DATA DELETES TEMPERORLY.
THEN USE ROLLBACK WE CAN GET THE DATA.
TRUNCATE: IT IS A DDL COMMAND (DATA DEFNITION LANGUAGE).
TRUNCATE ALL RECORDS IN A TABLE.
BUT STRUCTURE WILL BE THERE.
BUT DATA GOES PERMINANTLY.
WE CANT USE ROLLBACK HERE.
IT SHOLUD NOT WORK. WHY BCZ DATA TRUNCATES
PERMENANTLY.
| Is This Answer Correct ? | 1 Yes | 0 No |
QUESTION IS THAT DURING UPLOADING DATA IN PROD SERVER,OUR EQUIPMENT TAG NUMBERS ARE NOT MATCHING WITH SAP TAG NUMBERS SO DUE TO THIS WE ARE FACING PROB, BECAUSE WHENEVER ALARM IS COMING FROM SCADA DUE MISMATCH THE NOTIFICATION IS NOT CREATED IT IS GIVING ERROR. PLEASE SUGGEST THE METHOD SO THAT THE TAG NUMBERS OF BOTH (SCADA EQUIPMENT AND SAP EQUIP) SHOULD CONCIDE.OTHERWISE WE HAVE TO GO FOR LONG PROCESS EITHER BY INTERFACE TABLE OR BY EXPORTING ALL DATA AND MAKING RIGHT CHANGES.DO YOU HAVE ANY SHORTCT METHOD PL WRITE ME. THANKS
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