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How to find duplicate values exists or not

18
Hi,

Can any one tell me how to find "duplicate values exists in columns or table". please reply as early as possible.

ThanQ
Jan 31 '08 #1
1 15572
rski
700 Expert 512MB
Hi,

Can any one tell me how to find "duplicate values exists in columns or table". please reply as early as possible.

ThanQ
select column_name, count(*) from table_name group by column_name;

if value in a column is doubled you will find a number 2 next to the value.

to be more specific i need the table structure.
Jan 31 '08 #2

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