sql - Pass a query inside Where in () -


i have query looking this,

select * tbl1 field1 in (select field2 tbl2 id=1)
  • where field1 of type integer
  • and select field2 tbl2 id=1 return '1,2,3' string

obviously, cannot pass string in order check field of type integer. asking is, how fix above query? or there alternate solution this?

my dbms : postgresql 9.0.3

select * tbl1 field1 in (     select regexp_split_to_table(field2, ',')::int     tbl2     id=1 )

variation suggested igor

select * tbl1 field1 = (     select regexp_split_to_array(field2, ',')::int[]     tbl2     id=1 )

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