Because of the way date and time values are stored in SQL Server, searching for a particular date or time is not as straightforward as you might think it would be. This article describes how date/time values are stored, how the database design can simplify (or complicate) data retrieval, and how to query date/time data to get the right results every time.
2003-01-21
36,123 reads
For most DBAs, normalization is an understood concept, a bread and butter bit of knowledge. However, it is not at all unusual to review a database design by a development group for an OLTP (OnLine Transaction Processing) environment and find that the schema chosen is anything but properly normalized. This article by Brian Kelley will give you the core knowledge to data model.
2003-01-13
18,732 reads
This script creates comma separated lists of columns in different formats. These lists can be copied and pasted into other T-SQL statements. The lists are formatted as: a simple list of column names, a list with the column names as declared variables (@ + column name + data type), a list with column names as […]
2002-12-26
213 reads
This SP will create an Access database from TSQL using ADOX.Instead of Access, the Provider can be changed so that it will create *any* kind of database from DBase 3, Oracle, Excel, etc...
2002-12-11
351 reads
There are times when you have a limited range of ids and these have to be re-used as they become available.The script lists the first missing id in a table.Note that this script works best for a table with a limited number of rows, say sub 100,000I tested this on a PIII 500MHz 256Mb RAM […]
2002-12-09
274 reads
Purpose: To compare two strings with a supplied operator and return true if the strings evaluate to true using the operator provided. This is useful for stored procs to use instead of dynamic sql. YAY! Allowing for the operator and value to be passed in as parms. So that the user on the front end […]
2002-12-07
863 reads
Sometimes people want a Stored Proc with optional parameters. A lot of times people will use a coalesce for this. The problem with optional paremeters is that the query plan will never be an exact mach for that specific query. ( You never know what paremeters are filled..... )To solve this problem look at the […]
2002-12-06
457 reads
Sometime one needs to perform an operation on all or selected databases on a server/instance. Microsoft provides undocumented store proc sp_MSForEachDb to achieve this. I use it for some clean up process as a SQL Job.
2002-11-30
455 reads
Occassionally you might want to convert a binary number into some printable string. This would allow you display some meaning fully numbers hex characters, instead of just some unreadable garbage. This script takes a binary field, of basically any length, and converts it, character by character, to a character string. The character string will contain […]
2002-11-07
472 reads
This simple script make a comparison between two given database. It compare: The table present in both database The data type, lenght, nullability, precision for each table. The object present in both database. The StoredProc is able to compare database across different server, simple make […]
2002-10-31
813 reads
By James Serra
I’m honored to be hosting T-SQL Tuesday — edition #192. For those who may...
By Vinay Thakur
Continuing from Day 2 , we learned introduction on Generative AI and Agentic AI,...
Quite the title, so let me set the stage first. You have an Azure...
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Comments posted to this topic are about the item 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