SQL SELECT TOP Clause

The SQL SELECT TOP Clause The SELECT TOP clause is used to specify the number of records to return. The SELECT TOP clause can be very useful on large tables with thousands of records. Returning a large number of records can impact on performance. Note: Not all database systems support the SELECT TOP clause. SQL Server / MS Access Syntax SELECT TOP number|percent column_name(s) FROM table_name;   SQL SELECT TOP Equivalent in MySQL and Oracle MySQL Syntax SELECT column_name(s) FROM table_name LIMIT number; Example SELECT *…

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Determing SQL Server Table Size within a Database

A common problem that I have recently encountered was trying to identity which table within a database was the biggest one (in record size), therefore, taking up the most physical storage space. I found and modify this store procedure to work with MSSQL 2000, MSSQL 2005, and MSSQL 2008  that will perform all needed data calls and will return a result set with the data on all tables. T-SQL Code:   USE DWDATA GO CREATE PROCEDURE GetAllTableSizes AS /* Obtains spaced used data for ALL user tables in the database */…

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