Compare two table columns

hi all,
i am using db10g.
my task is to compare two table's data for example
table1 is having
col1 col2 col3
a b c
e f g
table2 is
col4 col5 col6
a e c
e f g
so i have to compare col1 first record and col4 first record.
in otherwords first table first column first item with second table first table first value and so on.
for ex: a= a
b= e
c= c etc
how can i acheive this?
both are database tables.
i cannot use minus function because data types are different for the corresponding column
how can i compare it?
Thanks..
Edited by: user13329002 on Jan 13, 2011 1:09 AM

Hi,
Try this
select
    case
        when a.col1 = b.col1 then 'EQUAL' else 'NOT EQUAL' end column1,
    case
        when a.col2 = b.col2 then 'EQUAL' else 'NOT EQUAL' end column2,
    case
        when a.col3 = b.col3 then 'EQUAL' else 'NOT EQUAL' end column3
from (select col1,col2,col3,rownum rn from table1) a,
                            (select col1,col2,col3,rownum rn from table2) b where a.rn = b.rn Try to see how you order the rows of the two tables.
cheers
VT

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Message was edited by:
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c_query_results_not_equal CONSTANT PLS_INTEGER := 1;
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v_cursor sys_refcursor;
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result_sets_do_not_match EXCEPTION;
query_returns_no_rows EXCEPTION;
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' (SELECT /*+ materialize */'
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UNION ALL
(SELECT * FROM test2 MINUS SELECT * FROM test1)
dbms_output.put_line('Start-2');
OPEN v_cursor
FOR v_sql_stmt;
dbms_output.put_line('Start-3');
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dbms_output.put_line('Start-4');
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dbms_output.put_line('Start-5');
CLOSE v_cursor;
dbms_output.put_line('Start-6');
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CLOSE v_cursor;
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EXCEPTION
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DECLARE
ERROR at line 1:
ORA-20103: There is a syntax or semantical error in one or both queries
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Error_Backtrace:
ORA-06512: at "ORAOWNER.COMPARE_QUERY_RESULTS", line 53
ORA-06512: at "ORAOWNER.COMPARE_QUERY_RESULTS", line 121
ORA-06512: at line 12
Could someone please help me fixing this error..It would be really appreciated
Thanks
Hitarth

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