Should I use != or <> for not equal in T-SQL? - Stack Overflow
I have seen SQL that uses both != and <> for not equal. What is the preferred syntax and why? I like !=, because <> reminds me of Visual Basic.
sql - Not equal <> != operator on NULL - Stack Overflow
Apr 14, 2011 · 437 <> 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 only use IS …
mysql - SQL WHERE condition is not equal to? - Stack Overflow
Nov 15, 2019 · SQL WHERE condition is not equal to? Asked 14 years, 6 months ago Modified 2 years, 1 month ago Viewed 309k times
What is the difference between NOT and != operators in SQL?
May 6, 2017 · NOT negates the following condition so it can be used with various operators. != is the non-standard alternative for the <> operator which means "not equal". e.g.
Using the correct, or preferable, not equal operator in MySQL
Apr 7, 2013 · The operator is the one that is in the SQL standard, so most people that know SQL will be accustomed to it, or at least aware of it. I myself wasn't even aware of that the operator was also …
sql - Oracle Not Equals Operator - Stack Overflow
Nov 3, 2010 · There are two not equals operator - != and <>. What's the difference between them? I heard that != is more efficient than other for comparing strings. Could anyone give a qualitative …
How to check for Is not Null And Is not Empty string in SQL server ...
Dec 28, 2011 · How can we check in a SQL Server WHERE condition whether the column is not null and not the empty string ('')?
sql - "<>" vs "NOT IN" - Stack Overflow
Conceptually, at least, it's even wrong if the subselect returns zero or one row. Because you're asking if a scalar, idcode, is equal to a zero- or one- element list. The scalar is never actually equal to the list, …
What is the syntax for "not equal" in SQLite? - Stack Overflow
Jun 6, 2014 · What is the syntax for "not equal" in SQLite? Asked 13 years, 9 months ago Modified 3 years, 4 months ago Viewed 125k times
Is there any difference between "!=" and "<>" in Oracle Sql?
May 18, 2012 · I would like to know if there are any differences in between the two not equal operators <> and != in Oracle. Are there cases where they can give different results or different performance?