sql - Locating records in a table where one of its field has more than one corresponding field -
i hope title not confusing. having trouble querying table in access. going use example of trying do. trying locate records 1 of field has more 1 corresponding field. example in mini table created below want query id_number field return id number 3 because id number 3 has 2 corresponding id code, efg , hij. table have 1 id number each id code. if there is more 1 id code each id number want see record return in result.
id_number id_code adress 1 abc 123 2 cde 567 *3 efg 897 *3 efg 589 $3 hij 215 5 lmp 532 6 mno 895 7 pqr 875 8 stu 312
thank quick reply. should had been more specific because thought original info had been enough didn't think address variable, sorry not mentioning earlier. issue @ hand id number , id code can have duplicate if have different address ones marked *. there cannot duplicate of id number different id code , address. there way query duplicate $ mark?
or of want 1 query give this:
select * ( select *, count(fieldname) count tablename group fieldname ) t1 t1.count > 1;
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