What Does Distinct Mean In Sql. SQL Query - Distinct on One Column for Distinct Value of Other with INNER JOIN Hot Network Questions Missed apple pruning window Would the median household income in the USA be 140K and mean net worth 800K if wealth were evenly distributed How to replace certain backup files on a. SQL SELECT DISTINCT and GROUP BY both produce duplicates.
A 400K rows B 26K rows and C 450 rows. The estimated query plan indicated that the basic inner join would be 3 times slower than the nested sub-queries however when actually running the query the basic inner join was twice as fast as the nested queries The basic inner join took 297ms on very minimal server hardware. SQL SELECT DISTINCT and GROUP BY both produce duplicates.
SQL SELECT DISTINCT and GROUP BY both produce duplicates.
The estimated query plan indicated that the basic inner join would be 3 times slower than the nested sub-queries however when actually running the query the basic inner join was twice as fast as the nested queries The basic inner join took 297ms on very minimal server hardware. I did a test on MS SQL 2005 using the following tables. SQL SELECT DISTINCT and GROUP BY both produce duplicates. SQL Query - Distinct on One Column for Distinct Value of Other with INNER JOIN Hot Network Questions Missed apple pruning window Would the median household income in the USA be 140K and mean net worth 800K if wealth were evenly distributed How to replace certain backup files on a.
