bigint,bigint,-1
char*,char,-1
date,date,-1
decimal*,decimal,-1
*numeric,decimal,-1
*double,double,-1
*float,double,-1
int*,int,-1
smallint,int,-1
time,time,-1
*timestamp,timestamp,-1,null
*varchar,varchar,-1
blob sub_type 0,bytea,-1
blob sub_type 1,bytea,-1
blob*,bytea,-1