I checked whether it was possible to truncate all tables of a database by using a cursor. However, since in most cases there are constraints between the tables, the cursor won’t be able to work.

DECLARE @table varchar(150)

DECLARE db_console CURSOR FOR

select distinct TABLE_SCHEMA + ‘.’ + TABLE_NAME from INFORMATION_SCHEMA.COLUMNS

OPEN db_console

fetch next from db_console into @table

while @@fetch_status = 0
begin
use AdventureWorks
exec(‘truncate table ‘ + @table)
–print @db + ‘.’ + ‘.’ + @schema + ‘.’ + @table + ‘truncated’
fetch next from db_console into @table
end

close db_console
deallocate db_console

You might as well say that this cursor is useless and in the same is a waste of time due to the fact that there is a stored procedure that can do that for us.

According to a response from kristof (stackoverflow), I was able to track the following:

– disable all constraints
EXEC sp_msforeachtable “ALTER TABLE ? NOCHECK CONSTRAINT all”

– delete data in all tables
EXEC sp_MSForEachTable “DELETE FROM ?”

– enable all constraints
exec sp_msforeachtable “ALTER TABLE ? WITH CHECK CHECK CONSTRAINT all”

– reseed tables
EXEC sp_MSforeachtable “DBCC CHECKIDENT ( ‘?’, RESEED, 0)”

Schema Names added below

USE AdventureWorks
GO
SELECT
f.name AS ForeignKey,
SCHEMA_NAME(o.schema_id) AS SchemaName,
OBJECT_NAME(f.parent_object_id) AS TableName,
COL_NAME(fc.parent_object_id,fc.parent_column_id) AS ColumnName,
OBJECT_NAME (f.referenced_object_id) AS ReferenceTableName,
COL_NAME(fc.referenced_object_id,fc.referenced_column_id) AS ReferenceColumnName,
f.update_referential_action_desc AS UpdateAction,
f.delete_referential_action_desc AS DeleteAction
FROM sys.foreign_keys AS f
JOIN sys.foreign_key_columns AS fc
ON f.OBJECT_ID = fc.constraint_object_id
JOIN sys.objects o
ON f.parent_object_id = o.object_id
ORDER BY
SchemaName ASC,
TableName ASC,
ColumnName ASC

This article was a great help to me.

I was wondering if you could add schema columns to the result set?

Thanks again..

Bob