2014-10-08
1,992 reads
T-SQL
2014-10-06
1,627 reads
2014-10-03
2,046 reads
2014-11-10 (first published: 2014-10-01)
1,351 reads
2014-10-01
2,036 reads
Filling In Missing Values Using the T-SQL Window Frame
Since SQL Server delivered the entire range of window functions, there has been far less justification for using the non-standard ex-Sybase 'Quirky Update' tricks to perform the many permutations of running totals in SQL Server. One of these related problems is the 'Data Smear'. Do window functions make this easier, and what is performance like? Dwain Camps investigates.
2014-10-01
11,294 reads
2014-09-30
1,945 reads
2014-09-29
2,014 reads
2014-09-25
2,003 reads
2014-09-23
2,290 reads
Blogs
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Forums
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how to write this query?
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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