Data Warehousing Tip: T-SQL Script to Create DEFAULT Constraints by Data Type
There is an ongoing discussion/debate regarding the handling of NULLS in a data warehouse, however, the following article by Michelle...
2013-09-11
726 reads
Data Warehousing Tip: T-SQL Script to Create DEFAULT Constraints by Data Type
There is an ongoing discussion/debate regarding the handling of NULLS in a data warehouse, however, the following article by Michelle Poolet summarizes it beautifully – “consider the data warehouse...
2013-09-11
15 reads
Data Warehousing Tip: Using T-SQL vs SSIS for Slowly Changing Dimension (SCD) Types 1 and 2
Here’s an example of using T-SQL to process a Slowly Changing Type 1&2 Dimension . Note: SSIS has an SCD transform...
2013-09-11
1,098 reads
Data Warehousing Tip: Using T-SQL vs SSIS for Slowly Changing Dimension (SCD) Types 1 and 2
Here’s an example of using T-SQL to process a Slowly Changing Type 1&2 Dimension . Note: SSIS has an SCD transform ,however, it does not process large dimensional datasets...
2013-09-11
28 reads
Parallel Data Warehouse (PDW) Tip: Useful Appliance Queries
This post contains the following queries that support development and operational tasks within a Microsoft Parallel Data Warehousing (PDW) Appliance...
2013-04-20
6,834 reads
Data Warehousing Tip: Surrogate Key Generation
If IDENTITY insert is disabled or simply not available in a particular database or a database architecture, you’ll want to...
2013-04-12
927 reads
Data Warehousing Tip: Surrogate Key Generation
If IDENTITY insert is disabled or simply not available in a particular database or a database architecture, you’ll want to do a table based surrogate key assignment or use...
2013-04-12
11 reads
SSAS How-To: Create Dynamic Time Calculations To Reuse Over Any Measure
Rather than making individual time calculations for each measure in an SSAS cube (i.e. YTD, Prior YTD, YTD Variances, etc), one can...
2013-02-07
1,900 reads
SSAS How-To: Create Dynamic Time Calculations To Reuse Over Any Measure
Rather than making individual time calculations for each measure in an SSAS cube (i.e. YTD, Prior YTD, YTD Variances, etc), one can use a more dynamic approach to time calcs applicable to all...
2013-02-07
86 reads
SSRS How-To: Simple Method to Pass MDX Multi-Select Parameters to MDX Datasets
SSRS Tip: Simplest Method to Pass MDX Multi-Select Parameters to MDX Datasets
I recently ran across a poorly covered topic in regards...
2013-02-07
3,240 reads
Blogs
T-SQL Tuesday #192: What career risks have you taken?
By James Serra
I’m honored to be hosting T-SQL Tuesday — edition #192. For those who may...
AI: Blog a Day – Day 3: LLM Models – Open Source vs Closed Source
By Vinay Thakur
Continuing from Day 2 , we learned introduction on Generative AI and Agentic AI,...
How to Parameterize Fabric Linked Services in Azure Data Factory for Azure Devops Deployment
Quite the title, so let me set the stage first. You have an Azure...
Forums
how to write this query?
hi everyone I am not sure how to write the query that will produce...
Rollback vs. Roll Forward
Comments posted to this topic are about the item Rollback vs. Roll Forward
Foreign Keys - Foes or Friend?
Comments posted to this topic are about the item Foreign Keys - Foes or...
Question of the Day
Fun with JSON I
I have some data in a table:
CREATE TABLE #test_data
(
id INT PRIMARY KEY,
name VARCHAR(100),
birth_date DATE
);
-- Step 2: Insert rows
INSERT INTO #test_data
VALUES
(1, 'Olivia', '2025-01-05'),
(2, 'Emma', '2025-03-02'),
(3, 'Liam', '2025-11-15'),
(4, 'Noah', '2025-12-22');
If I run this query, how many rows are returned?
SELECT *
FROM OPENJSON(
(
SELECT t.* FROM #test_data AS t FOR JSON PATH
)
) t; See possible answers