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CREATE TABLE student (id1 integer, name1 varchar (20)); INSERT INTO student (id1, name1 ) VALUES (1, 'ishi'), (2, 'sangee'); CREATE TABLE domain (id2 integer, name2 varchar (20)); INSERT INTO domain (id2, name2 ) VALUES (1, 'python'), (2, 'scala'), (3, 'java'), (4, 'c#'); CREATE TABLE mainpk (id1 integer, id2 integer); INSERT INTO mainpk (id1, id2) VALUES (1, 1), (1, 2), (1, 3), (2, 3), (2, 4);
select st.name1, dm.name2 from mainpk ms join student st on st.id1 = ms.id1 join domain dm on dm.id2 = ms.id2
name1
name2
ishi
python
ishi
scala
sangee
java
ishi
java
sangee
c#