mysql - Handling SQL reserved table and column names -


is there way handle reserved table & column names in app can work through kinds of databases oracle, mysql, sql server, postgresql etc.

currently, have following :

oracle - use double quotes. mysql - use backtick or double quotes (depends if ansi_quotes mode enabled) sql server - use brackets postgresql - use double quotes.

i aware ansi standard states use double quotes unfortunately not dbms seem support them.

use double quotes. that's standard says, , surprisingly, works on platforms.

require mysql have ansi_quotes enabled, or set @ session level:

set session sql_mode = 'ansi'

(i used ansi not ansi_quotes here because makes mysql bit saner).

postgresql doesn't require special settings identifiers (though old versions need standard_conforming_strings = on handle literals sensibly).

neither oracle.

modern ms-sql shouldn't require special settings support double quoted identifiers:

when set quoted_identifier on (default), strings delimited double quotation marks interpreted object identifiers

the docs suggest case in ms-sql 2008, , if still care 2005 in new application have bigger problems.

sqlfiddles:

interestingly, found sqlfiddle postgresql failed odd error. suspect sqlfiddle bug, it's fine on postgresql command line , via pgjdbc. fails there no table match following pattern [with].

all said, if you're trying write ansi sql, hope don't plan on using:

  • date/time maths
  • string concatenation
  • non-trivial aggregates
  • window functions (mysql still doesn't support them)
  • common table expressions
  • sql/xml
  • arbitrary precision decimal data types
  • any kind of user defined procedure or function
  • any kind of user-defined type
  • ... lots more

because different vendors use different names, have different support features, etc.

(on side note, if ever meet person decided call microsoft sql server "sql" in dark alley...)


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