pyflink.table.types.DataTypes.MULTISET

static DataTypes.MULTISET(element_type: DataType, nullable: bool = True) → MultisetType

Data type of a multiset (=bag). Unlike a set, it allows for multiple instances for each of its elements with a common subtype. Each unique value is mapped to some multiplicity.

There is no restriction of element types; it is the responsibility of the user to ensure uniqueness.

Parameters:

• element_type – DataType of each element in the multiset.

• nullable – boolean, whether the type can be null (None) or not.