I am getting the following results: select * from ts_debug('Rumman (AI)');
alias | description | token | dictionaries | dictionary | lexemes -----------+-----------------+--------+--------------------+--------------+---------- asciiword | Word, all ASCII | Rumman | {syn,english_stem} | english_stem | {rumman} blank | Space symbols | ( | {} | | asciiword | Word, all ASCII | AI | {syn,english_stem} | english_stem | {ai} blank | Space symbols | ) | {} | | (4 rows) But, select to_tsquery('Rumman (AI)'); ERROR: syntax error in tsquery: "Rumman (AI)" I don't know why this is happening. Any idea please.