Data Type Mapping: PostgreSQL
FlyData Sync Data Type Mapping: PostgreSQL -> Redshift (ver. 0.3.17)
There are data type differences between PostgreSQL and Amazon Redshift. Some formats are supported, while others are not.
In order to provide a smooth replication of data from PostgreSQL to Redshift, we automatically convert PostgreSQL data types to match the closest equivalent data types supported in Amazon Redshift.
Below is a mapping of this data type conversion.
PostgreSQL Data Type |
Redshift Data Type |
Agent version |
Notes |
| BIGINT | INT8 | ||
| BIT | INT8 | *11 | |
| BIT VARYING | INT8 | *11 | |
| BOOLEAN | BOOLEAN | ||
| BYTEA | VARCHAR(MAX) | *3 | |
| CHARACTER | VARCHAR | *3, *4 | |
| CHARACTER VARYING | VARCHAR | *3, *4 | |
| DATE | DATE | *5 | |
| DOUBLE PRECISION | FLOAT8 | ||
| INTEGER | INT4 | ||
| MONEY | NUMERIC | *6 | |
| NUMERIC | NUMERIC | ||
| REAL | FLOAT4 | ||
| SMALLINT | INT2 | ||
| TEXT | VARCHAR(MAX) | *3, *4 | |
| TIME | TIMESTAMP | *8, *9, *10 | |
| TIME WITH TIME ZONE | TIMESTAMP | *8, *9, *10 | |
| TIMESTAMP | TIMESTAMP | *5 | |
| TIMESTAMP WITH TIME ZONE | TIMESTAMP | *5 | |
| BOX, CIDR, CIRCLE, INET, INTERVAL, LINE, LSEG, MACADDR, PATH, POINT, POLYGON, TSQUERY, TSVECTOR, TXID_SNAPSHOT, UUID, XML | VARCHAR(MAX) | *3 | |
| BIGSERIAL, SMALLSERIAL, SERIAL | (unsupported) |
Notes
- *1) Redshift does not support unsigned types
- *2) Binary bytes get translated into a string of “0xFFFF…” format. e.g.) Binary 40bc8f => “0x40bc8f”
- *3) Truncated at 65,535 which is the max length of Redshift VARCHAR type
- *4) String gets converted to UTF-8
- *5) ‘0000-00-00’ becomes ‘0001-01-01’
- *6) maximum (precision, scale) is (38, 37)
- *7) label text is stored as varchar string
- *8) ‘00:00:00’ gets converted to ‘0001-01-01 00:00:00’
- *9) Negative value gets converted as an offset from ‘0001-01-01 00:00:00’. For example, ‘-01:00:00’ becomes ‘0001-12-31 23:00:00 BC’
- *10) Time value whose hour part is more than 23 is represented using the day part. For example, ‘25:00:00’ becomes ‘0001-01-02 01:00:00’
- *11) ex. b’101’ becomes 5 in Redshift
- *12) DATE(2) and DATE(4) are supported