SQL uses of "less than or equal to" <= vs. "not greater than ...
If SQL with a < is included in either XML or HTML it would have to be escaped as <. A greater than sign doesn't mean anything special unless it's been preceded by a less than sign.
What does <> (angle brackets) mean in MS-SQL Server?
Nov 8, 2013 · What does <> (angle brackets) mean in MS-SQL Server? Asked 11 years, 7 months ago Modified 3 years, 9 months ago Viewed 80k times
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 …
mysql - What does SQL Select symbol || mean? - Stack Overflow
Apr 29, 2014 · sql server: + (infix operator), concat ( vararg function ) Edit : Now Azure SQL also supports ANSI SQL standard || operator for string concatenation. Docs link.
Should I use != or <> for not equal in T-SQL? - Stack Overflow
Mar 26, 2018 · 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 - How to use "and" and "or" in a "Where" clause - Stack Overflow
Jul 23, 2012 · I have a query that is gathering information based on a set of conditions. Basically I want to know if a location has paid out more than $50 for the day OR the comment section has …
SQL WITH clause example - Stack Overflow
Sep 23, 2012 · 353 The SQL WITH clause was introduced by Oracle in the Oracle 9i release 2 database. The SQL WITH clause allows you to give a sub-query block a name (a process also …
sql - NOT IN vs NOT EXISTS - Stack Overflow
May 18, 2007 · Which of these queries is the faster? NOT EXISTS: SELECT ProductID, ProductName FROM Northwind..Products p WHERE NOT EXISTS ( SELECT 1 FROM …
How do I perform an IF...THEN in an SQL SELECT?
Sep 15, 2008 · The CASE statement is the closest to IF in SQL and is supported on all versions of SQL Server. SELECT CAST( CASE WHEN Obsolete = 'N' or InStock = 'Y' THEN 1 ELSE 0 …
sql - Select records based on what a field begins with? - Stack …
SQL-89 mode is used by DAO ... unless you've set the database option to use SQL-92 mode ("SQL Server compatible syntax). If you're running a query with ADO, it will always use SQL …