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Does truncate write to transaction log?
TRUNCATE TABLE removes the data by deallocating the data pages used to store the table data and records only the page deallocations in the transaction log.
Can you truncate a temp table?
There is no difference between truncating a temp table vs dropping/recreating it. Truncating and dropping/recreating a table can be measured in milliseconds. As Alexander said – it would be good to lose the loop if possible.
What does truncating a table does?
TRUNCATE TABLE removes all rows from a table, but the table structure and its columns, constraints, indexes, and so on remain. To remove the table definition in addition to its data, use the DROP TABLE statement. A TRUNCATE TABLE operation can be rolled back.
How do I drop a global temporary table?
The DECLARE GLOBAL TEMPORARY TABLE statement is used to create temporary (session-scope) tables. In VDBA, use the Create Table dialog. All temporary tables are automatically deleted at the end of the session. To delete a temporary table before the session ends, issue a DROP TABLE statement.
Can a TRUNCATE TABLE be rolled back from a transaction?
In SQL Server, you can rollback a TRUNCATE from a transaction. It does write page deallocation to the log, as you mentioned. In Oracle, TRUNCATE TABLE is a DDL statement that cannot be used in a transaction (or, more accurately, cannot be rolled back).
Is the truncate function logged in SQL Server?
And then the following code, which truncates the table in a transaction and checks the row count: Now the table is empty. But I can roll back the transaction and put all the data back again: Clearly the TRUNCATE operation must be logged otherwise the roll back operation would not work.
What’s the difference between Transact SQL and TRUNCATE TABLE?
TRUNCATE TABLE is similar to the DELETE statement with no WHERE clause; however, TRUNCATE TABLE is faster and uses fewer system and transaction log resources. To view Transact-SQL syntax for SQL Server 2014 and earlier, see Previous versions documentation. Is the name of the database.
Can a TRUNCATE TABLE be run inside of an explain statement?
TRUNCATE TABLE is not allowed within the EXPLAIN statement. TRUNCATE TABLE cannot be ran inside of a transaction. Microsoft SQL Server has the ability to drop or truncate tables that have more than 128 extents without holding simultaneous locks on all the extents required for the drop.