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Documentation
/ Specification
/ Tables
ducklake_column_mapping
Mappings contain the information used to map Parquet fields to column ids in the absence of field-ids in the Parquet file.
| Column name | Column type | |
|---|---|---|
mapping_id |
BIGINT |
|
table_id |
BIGINT |
|
type |
VARCHAR |
mapping_idis the numeric identifier of the mapping.mapping_idis incremented fromnext_catalog_idin theducklake_snapshottable.table_idrefers to atable_idfrom theducklake_tabletable.typedefines what method is used to perform the mapping.
The valid type values are the following:
type |
Description |
|---|---|
map_by_name |
Map the columns based on the names in the Parquet file |