Oracle Training Oracle Support Development Oracle Apps

 E-mail Us
 Oracle Articles

 Oracle Training
 Oracle Tips

 Oracle Forum
 Class Catalog

 Remote DBA
 Oracle Tuning
 Emergency 911
 RAC Support
 Apps Support
 Oracle Support

 SQL Tuning

 Oracle UNIX
 Oracle Linux
 Remote s
 Remote plans
 Application Server

 Oracle Forms
 Oracle Portal
 App Upgrades
 SQL Server
 Oracle Concepts
 Software Support

 Remote S


 Consulting Staff
 Consulting Prices
 Help Wanted!


 Oracle Posters
 Oracle Books

 Oracle Scripts

Don Burleson Blog 







Linda Webb

Got breaking Oracle news?    Burleson Consulting Oracle News

Click here for more Oracle News Headlines


SQL Syntax differences between Oracle and MS-SQL

Here is a great reference page that shows the syntax differences between Oracle SQL and Microsoft SQL Server SQL syntax:
There is also a great comparison page on SQL built-in functions in Oracle and SQL Server:
Description Oracle MS SQL Server
Smallest integer >= n CEIL CEILING
Modulus MOD %
Truncate number TRUNC <none>
Max or min number or string in list GREATEST,
Translate NULL to n NVL ISNULL
Return NULL if two values are equal DECODE NULLIF
String concatenation CONCAT(str1,str2) str1 + str2
Convert ASCII to char CHR CHAR
Capitalize first letters of words INITCAP <none>
Find string in string INSTR CHARINDEX
Find pattern in string INSTR PATINDEX
Pad string with blanks LPAD,
Trim leading or trailing chars other than blanks LTRIM(str,chars),
Replace chars in string REPLACE STUFF
Convert number to string TO_CHAR STR, CAST
Convert string to number TO_NUMBER CAST
Get substring from string SUBSTR SUBSTRING
Char for char translation in string TRANSLATE <none>
Date addition ADD_MONTH or + DATEADD
Date subtraction MONTHS_BETWEEN or - DATEDIFF
Last day of month LAST_DAY <none>
Time zone conversion NEW_TIME <none>
Next specified weekday after date NEXT_DAY <none>
Convert date to string TO_CHAR DATENAME, CONVERT
Convert string to date TO_DATE CAST
Convert date to number TO_NUMBER(TO_CHAR(d)) DATEPART
Date truncate TRUNC CONVERT
Convert hex to binary HEXTORAW CAST
Convert binary to hex RAWTOHEX CONVERT
If statement in an expression DECODE CASE ... WHEN
User's login id number or name UID, USER SUSER_ID, SUSER_NAME
User's database id number or name UID, USER USER_ID, USR_NAME
Current user USER USER

Related links

Oracle Update Statement



oracle dba poster

Oracle performance tuning software 
Oracle Linux poster


Burleson is the American Team

Note: This Oracle documentation was created as a support and Oracle training reference for use by our DBA performance tuning consulting professionals.  Feel free to ask questions on our Oracle forum.

Verify experience! Anyone considering using the services of an Oracle support expert should independently investigate their credentials and experience, and not rely on advertisements and self-proclaimed expertise. All legitimate Oracle experts publish their Oracle qualifications.

Errata?  Oracle technology is changing and we strive to update our BC Oracle support information.  If you find an error or have a suggestion for improving our content, we would appreciate your feedback.  Just  e-mail:  and include the URL for the page.


Burleson Consulting

The Oracle of Database Support

Oracle Performance Tuning

Remote DBA Services


Copyright 1996 -  2014

All rights reserved by Burleson

Oracle is the registered trademark of Oracle Corporation.