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What is the difference between delete and TRUNCATE?
The delete statement is used to remove single or multiple records from an existing table depending on the specified condition. The truncate command removes the complete data from an existing table but not the table itself. It preserves the table structure or schema.
How do you purge a table in SQL?
To remove all data from an existing table, use the SQL TRUNCATE TABLE order. You can also use the DROP TABLE command to delete an entire table. But Truncate will remove the entire table structure from the database, and you will need to recreate the table if you want to store any data.
What is the difference between DDL and DML commands in SQL?
DDL stands for Data Definition Language. DML stands for Data Manipulation Language. DDL statements are used to create database, schema, constraints, users, tables etc. DML statement is used to insert, update or delete the records.
What are DCL and TCL commands in SQL?
DCL is abbreviation of Data Control Language. It is used to create roles, permissions, and referential integrity as well it is used to control access to database by securing it. TCL is abbreviation of Transactional Control Language. It is used to manage different transactions occurring within a database.
What is purging in SQL?
Purging is the process of freeing up space in the database or of deleting obsolete data that is not required by the system. The purge process can be based on the age of the data or the type of data.
What is purge in SQL?
Use the PURGE statement to remove a table or index from your recycle bin and release all of the space associated with the object, or to remove the entire recycle bin, or to remove part of all of a dropped tablespace from the recycle bin.
What is difference between DDL and DML and DCL?
DDL – Data Definition Language. DQl – Data Query Language. DML – Data Manipulation Language. DCL – Data Control Language.
Is TRUNCATE a DDL or DML?
DDL statement
Although TRUNCATE TABLE is similar to DELETE , it is classified as a DDL statement rather than a DML statement.
Can we revert drop table?
Can You RollBack DROP TABLE or TRUNCATE TABLE. Yes, you can. With the Microsoft SQL recovery tool – EaseUS MS SQL Recovery, you will be able to recover the truncated table or recover the table after DROP. EaseUS MS SQL Recovery is a powerful tool to recover deleted or corrupted SQL database data.