2019-11-15
661 reads
computed columns
2019-11-12
891 reads
2019-11-05
720 reads
2019-10-29
826 reads
2019-10-22
766 reads
2019-10-15
778 reads
2019-10-08
715 reads
2019-10-01
935 reads
Using Computed Columns
Although computed columns are from the beginning of SQL Server, not everyone knows how to use them. This article will help you better understand how it works.
2019-02-12
11,985 reads
2015-04-16
1,664 reads
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STRING_AGG's behavior
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Question of the Day
STRING_AGG's behavior
Executing the following script (Sql Server 2022), you get the table t0 with 10 rows:
CREATE TABLE t0
( id INT PRIMARY KEY
, field1 VARCHAR(1000)
, field2 VARCHAR(MAX));
INSERT INTO t0
SELECT
gs.value
, REPLICATE ('X', 1000)
, REPLICATE ('Y', 1000)
FROM generate_series(1, 10, 1) gs;
GOWhat happens if you execute the following statements?
select STRING_AGG(field1, ';') within group (order by id) from t0;
select STRING_AGG(field2, ';') within group (order by id) from t0;