SQL Server: Is SELECTing a literal value faster than SELECTing a field?
63056
Subquery using Exists 1 or Exists *
52710
Fastest Way of Inserting in Entity Framework
109805
Best practices for SQL varchar column length
121004
Should I index a bit field in SQL Server?
73508
RDBMS: Proper way to store data - comma separated variables or in different fields or tables?
151604
Why does a query run slower in a Stored Procedure than in the Query window?
12937
How to cast an integer to a boolean in a MySQL SELECT clause?
117527
sql server - passing unquoted constants to functions like DATEPART does
75971
Is there a PL/SQL pragma similar to DETERMINISTIC, but for the scope of one single SQL SELECT?
83087
Fastest way to remove non-numeric characters from a VARCHAR in SQL Server
37319
What is the most efficient way to concatenate strings in SQL Server?
18781
SQL count(*) performance
93360
Performance differences between equal (=) and IN with one literal value
103080
slow query with fulltext and left join
58229
Is a table without a primary key normalized?
112218
How do I UPDATE from a SELECT in SQL Server?
75366
Why is SELECT * considered harmful?