What is the difference between SQL, PL-SQL and T-SQL?
Jun 25, 2009 · SQL is a declarative language to operate on relational data: tables, views, resultsets and similar. It's more or less standardized, and used by almost all relational …
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 …
SQL Server VS Oracle - Stack Overflow
I'm studying SQL Server but don't know much about Oracle. Can anyone give me a fair comparison of them? I've read a comparison about SQL Server 2000 vs Oracle 9i, but it's a …
sql - Oracle Joins - Comparison between conventional syntax VS …
Sep 19, 2013 · SQL will not start to perform better after migration to ANSI syntax - it's just different syntax. Oracle strongly recommends that you use the more flexible FROM clause join …
What is the Difference between SQL and SQL*Plus? [closed]
Mar 19, 2013 · 2 SQL Plus, the primary interface to the Oracle Database server, provides a powerful yet easy-to-use environment for querying, defining, and controlling data. SQL Plus …
What is the difference between "AS" and "IS" in an Oracle stored ...
The AS keyword is used instead of the IS keyword for creating a standalone function. [ A standalone stored function is a function (a subprogram that returns a single value) that is …
sql - Oracle Differences between NVL and Coalesce - Stack Overflow
Jun 4, 2009 · Are there non obvious differences between NVL and Coalesce in Oracle? The obvious differences are that coalesce will return the first non null item in its parameter list …
oracle database - difference between ON Clause and using clause …
May 3, 2012 · 23 I am doing some assignment related to joins in oracle. In some point I stucked i.e. what is the difference between USING and ON clause. I know that using ON clause we are …
IN vs OR in the SQL WHERE clause - Stack Overflow
Jun 19, 2010 · When dealing with big databases, which performs better: IN or OR in the SQL WHERE clause? Is there any difference about the way they are executed?
sql - What is the difference between "||" operator and concat …
Jul 9, 2012 · Would it be possible to explain the difference between the concat() function and the || operator in Oracle? Which one is better in terms of performance?