SQL Server Heath Check Script
This script runs a SQL server Health check for services, databases, Always On, replication, CDC job status.
2025-05-05
1,351 reads
Scripts
fetch an execution plan from SQL Server's buffer cache
To fetch an execution plan from SQL Server's buffer cache (i.e., the in-memory cache of execution plans), you can query the dynamic management views (DMVs) that SQL Server exposes.
2025-04-30
321 reads
List the Databases To Which You Have Access
Explanation: sys.databases contains information about all databases on the SQL Server instance. • HAS_DBACCESS(name) = 1 filters out the databases you dont have access to. •ORDER BY name sorts the result alphabetically.
2025-03-04
414 reads
Database mdf & ldf files size, used space, Free space in MB
This script will help to get the Database mdf & ldf files size, used space, Free space in MB.
2025-02-27 (first published: 2025-02-25)
441 reads
T-SQL Script for Monitoring Database Size in SQL Server
This T-SQL script helps you monitor the size and status of all databases on your SQL Server instance, providing insights into space usage and performance.
2025-01-29 (first published: 2025-01-20)
1,047 reads
Table Index Size
This procedure gets current table and index sizes of particular database and stores it to tables.
2025-01-07
358 reads
Real-Time SQL Server to BigQuery Streaming ETL using CDC
CDC Changes: The script queries the CDC tables in SQL Server to retrieve the changes (inserts, updates, deletes) since the last sync. Each change is processed with a mapped operation type (INSERT, UPDATE, DELETE).
Real-Time Streaming to BigQuery: The captured changes are streamed directly to BigQuery using its real-time insert_rows_json method, avoiding the need for batch uploads via Google Cloud Storage.
Tracking Last Sync Time: The script tracks the last synchronization time and updates it after every successful sync, ensuring no data is missed.
Low Latency: By continuously querying the CDC tables and streaming the changes, the script achieves near real-time data synchronization.
2024-11-13 (first published: 2024-10-24)
733 reads
Concatenating Multiple Row Values into a Single Comma-Separated List
In scenarios where you need to consolidate multiple rows into a single, comma-separated value, you can achieve this using FOR XML PATH. This script demonstrates how to retrieve volunteer data and display the days they have selected for participation.
2024-11-11 (first published: 2024-10-23)
1,764 reads
While Loop in T-SQL
Often, we encounter situations where we need to loop through a dataset to process or update records iteratively. In such cases, I use WHILE loop like below. The example below demonstrates how a WHILE loop can be used to iterate Sales records. This approach is particularly effective when working with a numerical or date column, […]
2024-10-15
621 reads
Comprehensive SQL Performance Monitoring and Optimisation Script
This script monitors and reports the execution statistics of SQL statements over a specified period, capturing metrics such as execution counts, CPU time, I/O operations, and elapsed time. It provides a comprehensive view of query performance, aiding in the diagnosis of performance issues and identifying problematic SQL queries in the database.
2024-07-29 (first published: 2024-07-11)
2,560 reads
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Question of the Day
ORDER BY alias
There is a table tmp_tab:
CREATE TABLE tmp_tab ( id int, val int );
INSERT INTO tmp_tab VALUES (1, 1), (2, NULL), (3, 3), (4, 4), (5, 5);You want to order the rows ids by the following expression:
ISNULL(val, id) + 1Which of the following queries produces the expected ordering and why? (Select all correct) See possible answers