2008-10-10 (first published: 2008-07-20)
1,890 reads
Scripts
Demonstration on how to pivot data using temp tables
This script was designed to 'pivot' data that couldnt easily be pivoted in any other way. i used temporary tables to eventually achieve the result i was looking for 🙂
2008-10-10
1,049 reads
One line to drop a (temp) table if it exists
It is very common to want to drop a table, if it exists, before creating it. This script does so, and it works well with temp tables (where the system views are harder to query).
2008-10-06
2,709 reads
Deleting Duplicate batches of rows
All of us have problems with Duplicate rows, here is a simple and efficient way of removing duplicate rows
2008-10-03 (first published: 2008-07-18)
1,684 reads
DDL Triggers Implementation
How to use DDL triggers and Query the Data with minimum performance impact.
2008-10-02
1,828 reads
2008-09-30 (first published: 2008-07-24)
883 reads
Getting schemas for your tables
A short script you can incorporate into any 2005/2008 code to get the full schema.table.
2008-09-29
660 reads
Script to return Rows count from table using sp_ExecuteSQL
Script to return Rows count from table using sp_ExecuteSQL
2008-09-26 (first published: 2008-07-20)
1,541 reads
Using Triggers for Detective Work
When a value is changed that causes an error, finding what caused the error can be tricky. Here an application was truncating a column. The trigger helped to identify the culprit.
2008-09-25 (first published: 2008-07-17)
1,400 reads
Checking fragmented indexes
A quick script to check for fragmentation in a database and generate a list of defrag statments you can run.
2008-09-24
2,473 reads
Blogs
Stop Using Pandas for Aggregations — Try DuckDB Instead
If you've ever loaded a 2 GB CSV into pandas just to run a...
Understanding Fabric Ontology
By James Serra
What problem is Fabric Ontology trying to solve? For years, most data conversations have...
QUOTENAME Basics: #SQLNewBlogger
By Steve Jones
Recently I ran across some code that used a lot of QUOTENAME() calls. A...
Forums
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Question of the Day
The string_agg function
We create the following table and then insert some records in it:
create table t1 ( id int primary key, category char(1) not null, product varchar(50) ); insert into t1 values (1, 'A', 'Product 1'), (2, 'A', 'Product 2'), (3, 'A', 'Product 3'), (4, 'B', 'Product 4'), (5, 'B', 'Product 5');What happens if we execute the following query in both Sql Server and PostgreSQL?
select id,
category,
string_agg(product, ';')
over (partition by category order by id
rows between unbounded preceding and unbounded following) as stragg
from t1; See possible answers