Tag naming conventions

Tag names may contain :

• Letters
  Any letter as defined by the Unicode Standard. The Unicode definition of letters includes Latin characters from a through z and from A through Z, in addition to letter characters from other languages.

• Digits
  Any numerical character.

• Special characters
  Any graphics character.

  These special characters may NOT be used in tag names:

  • Characters whose ASCII table code is 0 through 32 -(non-graphic characters)

  • + - * / \ = ( ) ` ~ ! ^ & @ [ ] { } | : ; ’ , < > ? " space

It is highly recommended that you adhere to the rules for SQL Server identifiers as well.

For "conventional" tag names, the first character may be a:

• Letter

• Digit

• Dollar sign ( $ ) or pound sign ( # )

Subsequent characters may be:

• A digit, but then the tagname must contain at least one letter

• Any of the supported special characters.

Due to storage formatting requirements, you cannot use either a quotation mark ( " ) or one or more single quotation marks ( ' ) at the beginning or at the end of a tag name.

Tag names that do not comply with these rules are regarded as "unconventional."

In a SQL query against a wide table, unconventional tag names must be delimited with brackets ( [ ] ), because the tag name is used as a column name.