Limitations

The current limitations of GaussDB(DWS)'s full text search are:

  • The length of each lexeme must be less than 2 KB.

  • The length of a tsvector (lexemes + positions) must be less than 1 megabyte.

  • Position values in tsvector must be greater than 0 and no more than 16383.

  • No more than 256 positions per lexeme. Excessive positions, if any, will be discarded.

  • The number of nodes (lexemes + operators) in a tsquery must be less than 32768.