Data cleanup

Technical Article

T-SQL script to purge all the tables including foreign key references

  • Script

T-SQL script to purge all the tables including foreign key references. The script has been made smart enough to use TRUNCATE wherever there is no foreign key reference and to use DELETE wherever there is foreign key reference.

5 (3)

You rated this post out of 5. Change rating

2019-12-10

2,473 reads

Blogs

Convert SQL Audit Files to a CSV Using Read-SqlXEvent

By

SQL Server Audit is an efficient way to track and log events that occur...

Control Flow Restartability in Azure Data Factory

By

I presented at SQL Saturday Pittshburgh this past weekend about populating your data warehouse...

Monday Monitor Tips: Knowing Your RPO

By

A customer was asking recently about the RPO for their estate, and I showed...

Read the latest Blogs

Forums

Wrong frames in blocked process report

By need for spid

Hi all, I'm on a sql server 2019 standard edition (15.0.4375.4) where I've a...

SRSS Failed Setup " The System cannot find the file specified (0x80070002)

By lubis_diapari

Dear All,   I am facing issue when update my license SRSS 2022 from...

Git Repo(s) for SQL Server Database, SSIS, SSAS, SSRS, PowerBI

By robertritter

Hey all, Just wondering how do you guys / girls set up git repo(s)...

Visit the forum

Question of the Day

STRING_AGG's behavior

Executing the following script (Sql Server 2022), you get the table t0 with 10 rows:
CREATE TABLE t0
( id     INT PRIMARY KEY
, field1 VARCHAR(1000)
, field2 VARCHAR(MAX));
INSERT INTO t0
SELECT
  gs.value
, REPLICATE ('X', 1000)
, REPLICATE ('Y', 1000)
FROM generate_series(1, 10, 1) gs;
GO
What happens if you execute the following statements?
  1. select STRING_AGG(field1, ';') within group (order by id)  from t0;
  2. select STRING_AGG(field2, ';') within group (order by id)  from t0;

See possible answers