i have 2 tables, first 1 keeps names , second related on in = cid. need highest date row second table, once. please below clearer explanation:
table1 a
+----+-------+ | id | name | +----+-------+ | 1 | name1 | | 2 | name2 | | 3 | name3 | | 4 | name4 | | 5 | name5 | +----+-------+
table2 c
+----+-------+------------+ | id | cid | galiojaiki | +----+-------+------------+ | 1 | 1 | 2015-04-30 | | 2 | 1 | 2015-09-30 | | 3 | 1 | 2015-03-10 | | 4 | 2 | 2015-06-30 | | 5 | 2 | 2015-07-30 | | 6 | 3 | 2015-05-11 | | 7 | 4 | 2015-05-10 | +----+-------+------------+
expected result:
+------------+-------+ | galiojaiki | name | +------------+-------+ | 2015-09-30 | name1 | | 2015-07-30 | name2 | | 2015-05-11 | name3 | | 2015-05-11 | name4 | +------------+-------+
my query:
select a.*, c.galiojaiki `y6fdt_igym_abonementai` inner join ( select max(galiojaiki) y6fdt_igym_sutartys ) c on c.cid= a.id group c.abonementas
how anout simple aggregation using max?
something like
select a.name, max(b.galiojaiki) galiojaiki `y6fdt_igym_abonementai` inner join `y6fdt_igym_sutartys` b on a.id = b.cid group a.name
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