MySQL Data Types	Destination Data Type
int, int unsigned, mediumint, mediumint unsigned, smallint, smallint unsigned, tinyint, tinyint unsigned	int
bigint, bigint unsigned	bigint
float, decimal(10,2)	float
double, double precision, real	double
datetime, timestamp	timestamptz
char, varchar, text, tinytext, mediumtext, longtext, enum, json, bit(1), time	string

INT UNSIGNED mapping change

From OLake version 0.4.1 and above, INT UNSIGNED maps to bigint in the destination. In versions earlier than 0.4.1, it maps to int.

timestamptz timezone

OLake always ingests timestamp data in UTC format, independent of the source timezone.