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

FlyData handles real-time replication for all of the major RDS systems, including mySQL, PostgreSQL, Amazon RDS, Amazon Aurora, MariaDB, and Percona.

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