I just recently got to know about the SET NOEXEC option of SQL Server which is available since SQL Server 7.0.

As a DBA or DB Developer, we are preparing a database change script with all the database changes that we have made earlier and that SQL script needs to be executed on different database servers like development server, validation server, production server.

An earlier, I faced an issue like accidently DB developer or system admin executed entire SQL Script. The script was tested very well and put all the commands in the sequence, but then also it needs to be review before actual execution especially in production server.

You can disable the execution of your batch script by adding SET NOEXEC ON in your SQL script.

When SET NOEXEC is ON, SQL Server compiles each batch of Transact-SQL statements but does not execute them. When SET NOEXEC is OFF, all batches are executed after compilation.

Let me demonstrate this,

Execute below few prints:

PRINT 'I am Anvesh Patel' 
GO 
PRINT 'I am founder of dbrnd.com' 
GO 
PRINT 'I am writing every day at dbrnd.com'  
GO 
PRINT 'I am writing every day at dbrnd.com'  
GO

SET NOEXEC ON
GO

PRINT 'I am Anvesh Patel' 
GO 
PRINT 'I am founder of dbrnd.com' 
GO 
PRINT 'I am writing every day at dbrnd.com'  
GO 
PRINT 'I am writing every day at dbrnd.com'  
GO

SET NOEXEC ON
GO

PRINT 'I am Anvesh Patel' 
GO 
PRINT 'I am founder of dbrnd.com' 
GO 
PRINT 'I am writing every day at dbrnd.com'  
GO 

SET NOEXEC OFF
GO
PRINT 'I am writing every day at dbrnd.com'  
GO

In this post, I am sharing one SQL Script to find the size of all your PostgreSQL Databases.

I am sharing this kind of script because It helps a lot for reporting and monitoring Database Server.

Recently, I have used this script to generate all database size reports because suddenly one of our PostgreSQL Server increased utilization of the Disk.

Using pg_catalog.pg_database, I am finding the size of Databases.
Below is a script:

SELECT 
	datname AS DatabaseName
	,pg_catalog.pg_get_userbyid(datdba) AS OwnerName
	,CASE 
		WHEN pg_catalog.has_database_privilege(datname, 'CONNECT')
		THEN pg_catalog.pg_size_pretty(pg_catalog.pg_database_size(datname))
		ELSE 'No Access For You'
	END AS DatabaseSize
FROM pg_catalog.pg_database
ORDER BY 
	CASE 
		WHEN pg_catalog.has_database_privilege(datname, 'CONNECT')
		THEN pg_catalog.pg_database_size(datname)
		ELSE NULL
	END DESC;

Before few days back, One of the SQL Server Developer asked me this question.
How to generate full database schema script or data script in PostgreSQL?

In PostgreSQL, We can also generate Database full script using Backup Option of PGAdmin tool.
When we require to create a fresh database without data, mostly we require to generate Database Schema Script.
We have one PLAIN text database backup type in PostgreSQL, which creates .sql file including Schema + Data.

Below are screenshots to generate Database Script using PGAdmin Tool:

Step 1:
Right click on the database and select backup option.
In backup dialog box, select PLAIN backup type and give a file name.

Step 2:
Default PLAIN text backup included both Database Schema + Data script.
In case of any changes, go to dump option tab and select data or schema only.

Step 3:
If you want to filter your objects, go to object tab and check or unchecked objects from the list.