sql to compare two tables
Can someone please help with a sql that will compare two tables having same column name for a missing row?
Tanks in advance
select * from table 1 minus select * from table 2
Support Dave but please be sure table2 is the one with the less rows.
Originally Posted by davey23uk
Query does full scan on table1 selecting * then, full scan on table2 taking out of the result set all matching rows.
Pablo (Paul) Berzukov
Author of Understanding Database Administration
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if there is a unique column you can just do the minus on that as it'll be faster
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