What does <> (angle brackets) mean in MS-SQL Server?
Nov 8, 2013 · <> operator means not equal to in MS SQL. It compares two expressions (a comparison operator). When you compare nonnull expressions, the result is TRUE if the left …
What does the "@" symbol do in SQL? - Stack Overflow
Jul 30, 2012 · The @CustID means it's a parameter that you will supply a value for later in your code. This is the best way of protecting against SQL injection. Create your query using …
sql - Not equal <> != operator on NULL - Stack Overflow
Apr 14, 2011 · <> is Standard SQL-92; != is its equivalent. Both evaluate for values, which NULL is not -- NULL is a placeholder to say there is the absence of a value. Which is why you can …
SQL uses of "less than or equal to" <= vs. "not greater than ...
The !=, !< and !> are not standard comparison operators and are only supported by few systems, SQL-Server being one: msdn: Comparison Operators (Transact-SQL). MySQL also supports …
Should I use != or <> for not equal in T-SQL? - Stack Overflow
Apr 6, 2009 · Yes; Microsoft themselves recommend using <> over != specifically for ANSI compliance, e.g. in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL …
sql server 2008 - SQL query with NOT LIKE IN - Stack Overflow
This is similar to others examples but uses a CTE and a SQL Server table value constructor. References:
sql - NOT IN vs NOT EXISTS - Stack Overflow
May 18, 2007 · In order to filter the student records that have a 10 grade in Math, we can use the EXISTS SQL operator, like this: SELECT id, first_name, last_name FROM student WHERE …
Explanation of % in SQL - Stack Overflow
Jun 12, 2019 · Could someone explain the difference between % in SQL? I understand that % is a wildcard that allows you to query results with LIKE results, i.e. a% for words starting with a, but …
sql - How to use "and" and "or" in a "Where" clause - Stack Overflow
Jul 23, 2012 · SQL Logic Operator Precedence: And and Or. Related. 1. SQL WHERE AND & OR Clauses. 0. Using SQL Where ...
SQL Server tables: what is the difference between @, # and
Feb 8, 2010 · I would focus on the differences between #table and @table. ##table is a global temporary table and for the record in over 10 years of using SQL Server I have yet to come …