Remove duplicates from left join

Question

Table A:

MSISDN  A   B   C
990 1   2   3
992 1   2   3
995 1   2   3
993 1   2   3
991 1   2   3
994 1   2   3

Table B:

990 2   2   3
992 2   2   4
993 1   2   3
994 1   2   3
995 1   6   3
990 1   2   3
991 2   2   3
992 2   2   3
995 1   2   3

select msis1.msisdn,msis1.a,msis2.c from msis1 left join msis2 on msis1.msisdn=msis2.msisdn;

MSISDN  A   C
990 1   3
992 1   4
993 1   3
994 1   3
995 1   3
990 1   3
991 1   3
992 1   3
995 1   3

I want to modify the above query not to get duplicate records

Answer 1

尝试SELECT DISTINCT ，这只会选择唯一的行。