decimal(expr) – Casts the value `expr` to the target data type `decimal`. Platforms: WhereOS, Spark,

decode(bin, charset) – Decodes the first argument using the second argument character set. Platforms: WhereOS,

deflate(TEXT data [, const int compressionLevel]) – Returns a compressed BINARY object by using Deflater.

day(date) – Returns the day of month of the date/timestamp. Platforms: WhereOS, Spark, Hive Class:

dayofmonth(date) – Returns the day of month of the date/timestamp. Platforms: WhereOS, Spark, Hive Class:

dayofweek(date) – Returns the day of the week for date/timestamp (1 = Sunday, 2 =