Contains check if string in slice.

DecodeMySQLFile2Object decodes a string that was encoded using EncodeMySQLObject2File https://dev.mysql.com/doc/refman/8.0/en/identifier-mapping.html.

EncodeMySQLObject2File encodes a string to a format suitable for writing to a MySQL file https://dev.mysql.com/doc/refman/8.0/en/identifier-mapping.html.

zfill takes a string and pads it with zeros on the left to the desired length.