PostgreSQL数据库中的基本数据类型一共是41种，实际应用中，数据库使用类型、数据库实现类型、Go语言承载类型，如何做一一对应，这下子就清楚了。
| 数据库基本类型 | 数据库实现类型 | Go语言承载类型 |
|---|---|---|
| bigint | INT8 | int64 |
| bigserial | INT8 | int64 |
| bit(4) | BIT | interface{} |
| bit varying(4) | VARBIT | interface{} |
| boolean | BOOL | bool |
| box | BOX | interface{} |
| bytea | BYTEA | []uint8 |
| character(4) | BPCHAR | interface{} |
| character varying(4) | VARCHAR | interface{} |
| cidr | CIDR | interface{} |
| circle | CIRCLE | interface{} |
| date | DATE | time.Time |
| double precision | FLOAT8 | interface{} |
| inet | INET | interface{} |
| integer | INT4 | int32 |
| interval | INTERVAL | interface{} |
| json | JSON | interface{} |
| jsonb | JSONB | interface{} |
| line | LINE | interface{} |
| lseg | LSEG | interface{} |
| macaddr | MACADDR | interface{} |
| money | MONEY | interface{} |
| numeric | NUMERIC | interface{} |
| path | PATH | interface{} |
| pg_lsn | PG_LSN | interface{} |
| point | POINT | interface{} |
| polygon | POLYGON | interface{} |
| real | FLOAT4 | interface{} |
| smallint | INT2 | int16 |
| smallserial | INT2 | int16 |
| serial | INT4 | int32 |
| text | TEXT | string |
| time without time zone | TIME | time.Time |
| time with time zone | TIMETZ | time.Time |
| timestamp without time zone | TIMESTAMP | time.Time |
| timestamp with time zone | TIMESTAMPTZ | time.Time |
| tsquery | TSQUERY | interface{} |
| tsvector | TSVECTOR | interface{} |
| txid_snapshot | TXID_SNAPSHOT | interface{} |
| uuid | UUID | interface{} |
| xml | XML | interface{} |