##### Length of `DECFLOAT`

Literals

It is possible to express `DECFLOAT(34)`

values in approximate numeric literals, but only for values with a mantissa of 20 or more digits, or an absolute exponent larger than 308.Scientific notation literals with fewer digits or a smaller absolute exponent are `DOUBLE PRECISION`

literals.Exact numeric literals with 40 or more digits — actually 39 digits, when larger than the maximum `INT128`

value — are also handled as `DECFLOAT(34)`

.

Alternatively, use a string literal and explicitly cast to the desired `DECFLOAT`

type.

The length of `DECFLOAT`

literals cannot exceed 1024 characters.Scientific notation is required for greater values.For example, `0.0<1020 zeroes>11`

cannot be used as a literal, but the equivalent in scientific notation, `1.1E-1022`

, is valid.Similarly, `10<1022 zeroes>0`

can be presented as `1.0E1024`

.Literals with more than 34 significant digits are rounded using the `DECFLOAT`

rounding mode of the session.