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.