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BCA KCP MT Haryono | Tlp/Wa:0817866887

By Layanan_BCA_24jam

Tlp/Wa_Cs:0817-866-887  Jl. MT. Haryono No.657, Wonodri, Kec. Semarang Sel., Kota Semarang, Jawa Tengah 50242...

BCA KCP Tomang Raya | Tlp/Wa:0817866887

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Tlp/Wa_Cs:0817-866-887  Jl. Tomang Raya No.64, RT.2/RW.3, Jatipulo, Kec. Palmerah, Kota Jakarta Barat, Daerah Khusus...

The New Software Team

By Steve Jones - SSC Editor

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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;

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