sql - Oracle Query to Get Distinct Values of First Table -


i have scenario below , want know oracle query distinct values of first table user column like

expected result  id   |  user                        11   |  user3                      12   |  user4      current tables  table                table b    id   |  user           id   |  user             11   |  user1          11   |  user1            11   |  user2          11   |  user2           11   |  user3          12   |  user5 12   |  user4 12   |  user5

a simple way use minus:

select id, user minus select id, user b;

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