Text-Search parser for PostgreSQL

Why?

Using pg's to_tsquery directly with user input can throw errors. plainto_tsquery sanitizes the user input, but it's very limited (it just puts an and between words), websearch_to_tsquery extends this behavior a little further only between double-quotes, with followedBy operator and negations.

This module allows customizable text-search operators: and, or, followedBy, not, prefix, parentheses, quoted text (same behavior than websearch_to_tsquery).

See the options defaults values

usage

const tsquery = require('pg-tsquery')(/* options can be passed to override the defaults */);

pool.query('SELECT * FROM tabby WHERE to_tsvector(col) @@ to_tsquery($1)', [tsquery(str)]);

// or get a reusable instance
const {Tsquery} = require('pg-tsquery');

const parser = new Tsquery(/* options can be passed to override the defaults */);

// then one of those equivalent ways to process your input:
parse.parseAndStringify(str);
`${parser.parse(str) || ''}`;

| inputs | output | | --- | --- | | foo bar | foo&bar | | foo -bar, foo !bar, foo + !bar | foo&!bar | | foo bar,bip, foo+bar \| bip | foo&bar\|bip | | foo (bar,bip), foo+(bar\|bip) | foo&(bar\|bip) | | foo>bar>bip | foo<->bar<->bip | | foo*,bar* bana:* | foo:*\|bar:*&bana:* |

Demo