Useful regex patterns for parsing SQL

LICENSE

BSD 2-Clause License

Copyright (c) 2021, Patrick Shechet
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patterns.py

import re

OPERATION_PATTERN = re.compile(
    r"(?P<operation>SELECT|UPDATE|DELETE|INSERT|(?:CREATE|ALTER|DROP)\s+(?:DATABASE|TABLE|INDEX|SCHEMA|VIEW|PROCEDURE|FUNCTION))",
    re.IGNORECASE,
)

TABLE_LIKE_PATTERN = re.compile(
    r"(?P<operation>UPDATE|FROM|CREATE|ALTER|DROP|TRUNCATE|JOIN)(?:TABLE)?\s+(?P<table_like>[^\s]+)",
    re.IGNORECASE,
)

COMMENTS_PATTERN = re.compile(
    r"(--[^\r\n]*)|(/\*[\w\W]*?(?=\*/)\*/)", re.IGNORECASE
)