Using Custom ALC Algorithms - Teradata VantageCloud Lake

You can implement a custom compression algorithm as a scalar external UDF, and then specify the UDF in the COMPRESS USING phrase of a column definition for a CREATE TABLE or ALTER TABLE statement, for example:

CREATE TABLE  table_name 
  (ItemNo INTEGER,
   Type CHAR(10) UPPERCASE,
   Description VARCHAR(1000)
      COMPRESS USING  compression_UDF_name 
        DECOMPRESS USING  decompression_UDF_name);