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Sybase » Transact-SQL » Coding »

Transact SQL: Finding duplicate rows in a table

     



This example finds cargo records with have duplicate destination ids.


3> select cargo_id, dest_id
4> from routing t1
5> where
6> ( select count(*)
7> from routing t2
8> where t2.dest_id = t1.dest_id ) > 1
9>
10> go










Sybase : Related Topics

Sybase : Transact-SQL : Transact SQL: numeric functions
Sybase : Transact-SQL : Transact SQL: string functions
Sybase : Transact-SQL : Transact SQL: date/time functions
Sybase : Transact-SQL : Transact SQL: misc functions
Sybase : Transact-SQL : Transact SQL: Conditionals
Sybase : Transact-SQL : Transact SQL: looping constructs
Sybase : Transact-SQL : Transact SQL: Cursors
Sybase : Transact-SQL : Transact SQL: Complex Updates
Sybase : Transact-SQL : Using Temporary Tables
Sybase : Transact-SQL : Inner/Outer Joins
Sybase : Transact-SQL : Isolation Levels
Sybase : Transact-SQL : Reporting: SQL Performance and Tuning
Sybase : Transact-SQL : Case Statement
Sybase : Transact-SQL : Date processing: stripping time from datetime
Sybase : Transact-SQL : Safely delete a large number of rows without blowing the t-log
Sybase : Transact-SQL : Transact SQL: date/time formats
Sybase : Transact-SQL : Creating a stored procedure
Sybase : Transact-SQL : Custom query plans
Sybase : Transact-SQL : Rowcount setting - limiting result sets
Sybase : Transact-SQL : Ranking Data - with Duplicates
Sybase : Transact-SQL : Forcing an index in a query
Sybase : Transact-SQL : Median Calculation, with pure SQL
Sybase : Transact-SQL : Lead and Lag with pure SQL

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