3.1 How to Use This Chapter
When researching a command in this chapter:
Check the platform support table.
Read the section on SQL2003 syntax and description even if you are
looking for a specific platform implementation.
Finally, read the specific platform implementation information.
Any common features between the platform implementations of a command
are discussed and compared against the SQL2003 topic. Thus, the
subsection on a platform's implementation of a
particular command may not describe every aspect of that command,
since some of its details may be covered in the SQL2003 section.
Please note that if there is a keyword that appears in a command
syntax but not in its keyword description, this is because we chose
not to repeat descriptions that appear under the ANSI entry.
If you skip straight to a platform implementation and do not see a
discussion of a keyword or clause that you are interested in, that
means it is described (in common across all supporting platforms)
under the SQL2003 entry of the command.