What does the "@" symbol do in SQL? - Stack Overflow
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 parameters, rather than …
What does the SQL # symbol mean and how is it used?
Jun 28, 2019 · The other answers are correct if you're dealing with SQL Server, and it's clear that you are. But since the question title just says SQL, I should mention that there are some forms of SQL …
sql - Left Outer Join using + sign in Oracle 11g - Stack Overflow
This contradicts what I linked to in my answer, which is an excerpt from Oracle Database 10g SQL (Osborne ORACLE Press Series) 1st edition (February 20, 2004), stating: "In a left outer join, the …
Should I use != or <> for not equal in T-SQL? - Stack Overflow
Yes; Microsoft themselves recommend using <> over != specifically for ANSI compliance, e.g. in Microsoft Press training kit for 70-461 exam, "Querying Microsoft SQL Server", they say "As an …
sql - How to insert a string which contains an "&" - Stack Overflow
Sep 30, 2008 · How can I write an insert statement which includes the & character? For example, if I wanted to insert "J&J Construction" into a column in the database. I'm not sure if it makes a …
Oracle SQL escape character (for a '&') - Stack Overflow
Jul 16, 2009 · While attempting to execute SQL insert statements using Oracle SQL Developer I keep generating an "Enter substitution value" prompt: insert into agregadores_agregadores ( idagregador, …
SQL asterisk(*) all possible uses - Stack Overflow
Apr 13, 2020 · It is used in sql-server for xml. In the code below, aliasing the subquery as ' [*]' means that COLUMN_NAME and DATA_TYPE xml nodes output on the same level as TABLE_SCHEMA …
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.
meaning of %%% in sql query? - Stack Overflow
Jun 5, 2015 · 0 In SQL '%' and '_' (underscore sign) are wildcard characters. '%' replaces any number of characters - equivalent to '*' in Linux/Unix and Windows file search. '_' replaces one character - …
What does a (+) sign mean in an Oracle SQL WHERE clause?
Jan 29, 2014 · Interesting that this has been accepted for so long. According to Oracle's documentation linked to in the answer, "To write a query that performs an outer join of tables A and B and returns all …