[Feature request] Generalize query

[duongphannamhung]

Is your feature request related to a problem? Please describe. Do you want a feature to generalize the sql:

'SELECT /* Test */ foo FROM bar WHERE id in (1, 2, 56)' -> 'SELECT foo FROM bar WHERE id in (XYZ)' (cleaned comment, too)

This feature would help the grouping sql more handy.

Describe the solution you'd like I will replace the param token into constant. If you want, i would like to give a PR.