patternsqlModerate
Truncate with where clause
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withtruncatewhereclause
Problem
Can I use truncate command with a where clause? I need to remove specific rows from several tables.
How can I delete specific data from the entire database?
Is there any other method to remove a specific data from entire DB?
In my database there are 172 tables. I wanted to delete a specific name and its corresponding columns from the entire database. The name is spread across entire database, hence I want to remove it in a single shot instead of going to each table and deleting it individually.
How can I delete specific data from the entire database?
SELECT DimEmployee.[FirstName], DimEmployee.[LastName], [SalesOrderNumber], [ShipDateKey]
FROM DimEmployee
JOIN [FactResellerSales]
ON DimEmployee.[EmployeeKey] = [FactResellerSales].[ProductKey]
WHERE DimEmployee.[FirstName] like 'kevin%' <--have to truncate this specific name from entire DBIs there any other method to remove a specific data from entire DB?
In my database there are 172 tables. I wanted to delete a specific name and its corresponding columns from the entire database. The name is spread across entire database, hence I want to remove it in a single shot instead of going to each table and deleting it individually.
Solution
No, Truncate can't be used with a
From BOL:
If you're looking for a more efficient way to delete data, I'd start here.
WHERE clause. Truncate simply deallocates all the pages belonging to a table (or a partition) and its indexes.From BOL:
-- Syntax for SQL Server and Azure SQL Database
TRUNCATE TABLE
[ { database_name .[ schema_name ] . | schema_name . } ]
table_name
[ WITH ( PARTITIONS ( { | }
[ , ...n ] ) ) ]
[ ; ]If you're looking for a more efficient way to delete data, I'd start here.
Code Snippets
-- Syntax for SQL Server and Azure SQL Database
TRUNCATE TABLE
[ { database_name .[ schema_name ] . | schema_name . } ]
table_name
[ WITH ( PARTITIONS ( { <partition_number_expression> | <range> }
[ , ...n ] ) ) ]
[ ; ]Context
StackExchange Database Administrators Q#170849, answer score: 12
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