sql server - Truncate with where clause - Database Administrators …
2017年4月12日 · TRUNCATE TABLE is a statement in SQL that deletes all records in a table very fast by deallocating the data pages used by the table. Deallocating the data pages reduces the resource overhead of logging the deletions done, as well as the number of locks acquired.
sql server - What permissions are necessary for truncating a table ...
The best place to look for this information is in books online. The article on TRUNCATE TABLE here indicates: The minimum permission required is ALTER on table_name. TRUNCATE TABLE permissions default to the table owner, members of the sysadmin fixed server role, and the db_owner and db_ddladmin fixed database roles, and are not transferable.
sql server - Truncate multiple tables after finding those tables …
2019年6月17日 · Here is a quick example of generating dynamic SQL to build the Truncate commands. My example was run against the AdventureWorks database looking for tables that began with Sales%. Replace with your selection criteria. The Truncate commands are concatenated into a varchar string variable.
sql server - Why does truncating a temp table at the end of the …
2017年10月17日 · This is true whether an explicit TRUNCATE TABLE is used or not. The only difference is a tiny implementation detail. An explicit TRUNCATE TABLE happens to create a task with a shorter timer than the (otherwise identical) deferred drop task created by temporary table cleanup: Whether this is by accident or design is anyone's guess.
sql server - Truncated 200GB table but disk space not released ...
2014年9月24日 · This is normal behavior when you truncate table and which involves removal of more than 128 extents as Per Books Online. When you drop or rebuild large indexes, or drop or truncate large tables, the Database Engine defers the actual page deallocations, and their associated locks, until after a transaction commits.
t sql - Truncate partition and merge it SQL server - Database ...
2024年11月13日 · Truncate partition failure - "Cannot specify partition number in the truncate table statement as the table is not partitioned." 5 MSSQL - query runs for too long when filtering after a certain date
What can cause TRUNCATE TABLE to take a really long time?
The table is not large and only has a few thousands records. For some reason, the TRUNCATE TABLE command takes really long time to execute (both on the master and on the slave). It takes about 400K ms to execute!! When it runs on the slave, it causes it to lag from the Master. After the TRUNCATE TABLE finishes, everything is back to normal.
How to get last truncated time for each tables in SQL Server …
2016年9月1日 · I'm afraid it's not possible to know the last time a table was truncated without setting up something to capture the event upfront. The default trace does not hold information for truncate events and sys.dm_dm_index_usage_stats won't help you here either. Your options are: A trace; An Extended Events session
sql server - SQL Permission to Truncate Table - Database …
2018年2月28日 · The following is the T-SQL that corresponds to the steps noted above:-- 1) Create the Stored Procedure: GO CREATE PROCEDURE dbo.[SomeTable_Truncate] AS SET NOCOUNT ON; TRUNCATE TABLE dbo.[SomeTable]; GO -- 2) Grant EXECUTE on the Stored Procedure to the User(s) and/or Role(s) -- that should be able to perform the TRUNCATE.
Can TRUNCATE TABLE be overloaded on SQL Server?
2018年7月5日 · DELETE FROM X; --remove all rows TRUNCATE TABLE X; --truncate the empty table. When you delete from a table, you are removing rows. You can specify what rows to delete with a WHERE clause. When you TRUNCATE a table, it is not logging what rows are deleted and it does perform minimal logging.