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Martin Smith
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Top Questions
492
votes
What's the difference between a temp table and table variable in SQL Server?
sql-server
t-sql
temporary-tables
table-variable
asked Apr 11, 2012 at 22:22
dba.stackexchange.com
57
votes
How to combine date and time to datetime2 in SQL Server?
sql-server
datatypes
date
time
datetime2
asked Oct 13, 2013 at 13:44
dba.stackexchange.com
53
votes
Don't auto community wiki answers to questions made CW through too many edits
feature-request
status-completed
community-wiki
asked Nov 14, 2012 at 10:01
meta.stackexchange.com
41
votes
Performance of Non Clustered Indexes on Heaps vs Clustered Indexes
sql-server
clustered-index
asked Feb 23, 2011 at 17:19
dba.stackexchange.com
40
votes
Optimising plans with XML readers
sql-server
sql-server-2012
execution-plan
xml
database-internals
asked Dec 20, 2012 at 20:51
dba.stackexchange.com
39
votes
Why is using a table variable more than twice as fast as a #temp table in this specific case?
sql-server
sql
temp-tables
asked Feb 18, 2012 at 21:30
dba.stackexchange.com
37
votes
Is there any personal benefit in formally cancelling a (non-refundable) flight?
air-travel
tickets
cancellations
asked May 10, 2014 at 20:28
travel.stackexchange.com
33
votes
When will a FAST_FORWARD cursor have a work table (and is this something to avoid)?
sql
sql-server
sql-server-2008
database-performance
database-cursor
asked Oct 23, 2011 at 21:01
stackoverflow.com
30
votes
User signing up to many stackexchange sites and offering the association bonus as a bounty
discussion
bounty
bonus-reputation
asked Sep 4, 2017 at 21:50
meta.stackexchange.com
29
votes
Why does the estimated cost of (the same) 1000 seeks on a unique index differ in these plans?
sql-server
sql-server-2014
optimization
asked Sep 15, 2016 at 16:50
dba.stackexchange.com
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Top Answers
1599
How to drop a table if it exists?
stackoverflow.com
1177
How to check if a column exists in a SQL Server table
stackoverflow.com
988
What is the difference between INNER JOIN and OUTER JOIN?
stackoverflow.com
964
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stackoverflow.com
801
NOT IN vs NOT EXISTS
stackoverflow.com
795
How can I remove duplicate rows?
stackoverflow.com
734
What's the difference between a temp table and table variable in SQL Server?
dba.stackexchange.com
619
SQL RANK() versus ROW_NUMBER()
stackoverflow.com
540
MySQL SELECT only not null values
stackoverflow.com
514
Changing the maximum length of a varchar column?
stackoverflow.com
503
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stackoverflow.com
464
Creating an index on a table variable
stackoverflow.com
410
When should I use a table variable vs temporary table in sql server?
stackoverflow.com
375
How can I update top 100 records in SQL server?
stackoverflow.com
369
What do Clustered and Non-Clustered index actually mean?
stackoverflow.com
323
How do I perform an IF...THEN in an SQL SELECT?
stackoverflow.com
315
Can we have multiple <tbody> in same <table>?
stackoverflow.com
287
Which are more performant, CTE or temporary tables?
stackoverflow.com
269
SQL NOT IN not working
stackoverflow.com
264
How to delete the top 1000 rows from a table using Sql Server 2008?
stackoverflow.com
256
SQL NVARCHAR and VARCHAR Limits
stackoverflow.com
243
Drop a temporary table if it exists
stackoverflow.com
235
Real life example, when to use OUTER / CROSS APPLY in SQL
stackoverflow.com
235
How to check if a function exists in a SQL database?
stackoverflow.com
218
How do I escape reserved words used as column names? MySQL/Create Table
stackoverflow.com
198
How do I UPDATE from a SELECT in SQL Server?
stackoverflow.com
194
Identity increment is jumping in SQL Server database
stackoverflow.com
190
Add column to SQL Server
stackoverflow.com
174
SQL Update from One Table to Another Based on a ID Match
stackoverflow.com
165
SQL Server: Maximum character length of object names
stackoverflow.com
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