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Editorial Team
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Asked: 2026-06-03T01:01:07+00:00

For this two tables: CREATE TABLE TEST1 ( ID INTEGER ,key VARCHAR(50),VALUE1 VARCHAR(50)); CREATE

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For this two tables:

CREATE TABLE TEST1 ( ID  INTEGER ,key  VARCHAR(50),VALUE1 VARCHAR(50));
CREATE TABLE TEST2 ( ID  INTEGER ,key  VARCHAR(50),VALUE2 VARCHAR(50));

Table1:

130,    'HANSEN',   'STREET1'
130,    'HANSEN',   'STREET2'
130,    'HANSEN',   'STREET3'
120,    'HANSEN',   'STREET5'
120,    'HANSEN',   'STREET6'

Table2: 

130,    'HANSEN',   'ZIP1'
130,    'HANSEN',   'ZIP2'
130,    'HANSEN',   'ZIP3'
120,    'HANSEN',   'ZIP4'
120,    'HANSEN',   'ZIP5'

Is it possible to get the output as:

130,    'HANSEN',   'ZIP1','STREET1'
130,    'HANSEN',   'ZIP2','STREET2'
130,    'HANSEN',   'ZIP3','STREET3'
120,    'HANSEN',   'ZIP4','STREET5'
120,    'HANSEN',   'ZIP5','STREET6'

Tried with inner join on id,key but i get the Cartesian product

Thanks for your help.

Helper script (if someone is willing to test it):

DROP TABLE TEST1;
DROP TABLE TEST2;

CREATE TABLE TEST1 ( ID  INTEGER ,key  VARCHAR(50),VALUE1 VARCHAR(50));
CREATE TABLE TEST2 ( ID  INTEGER ,key  VARCHAR(50),VALUE2 VARCHAR(50));

INSERT INTO TEST1 VALUES (130,  'HANSEN',   'STREET1');
INSERT INTO TEST1 VALUES (130,  'HANSEN',   'STREET2');
INSERT INTO TEST1 VALUES (130,  'HANSEN',   'STREET3');
INSERT INTO TEST1 VALUES (120,  'HANSEN',   'STREET5');
INSERT INTO TEST1 VALUES (120,  'HANSEN',   'STREET6');

INSERT INTO TEST2 VALUES (130,  'HANSEN',   'ZIP1');
INSERT INTO TEST2 VALUES (130,  'HANSEN',   'ZIP2');
INSERT INTO TEST2 VALUES (130,  'HANSEN',   'ZIP3');
INSERT INTO TEST2 VALUES (120,  'HANSEN',   'ZIP4');
INSERT INTO TEST2 VALUES (120,  'HANSEN',   'ZIP5');
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1 Answer

  1. Editorial Team

    This should do it:

    with t1 as (
    select id, 
           key, 
           value1,
           row_number() over (partition by id order by key, value1) as rn
    from test1
), 
t2 as (
    select id, 
           key, 
           value2,
           row_number() over (partition by id order by key, value2) as rn
    from test2
)
select t1.id, 
       t2.key, 
       t2.value2||','||t1.value1
from t1
  join t2 on t1.id = t2.id and t1.key = t2.key and t1.rn = t2.rn
order by 1 desc, 3 asc
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