PartitionMappingPreviewSchema

is_monotonicboolean

Whether the owner has declared the transform order-preserving. Range operators only mirror when they have.

Default value: false

mapped_columnstringrequired

Column whose filters would be mirrored

Possible values: non-empty and <= 250 characters

operatorstring

Filter operator being mirrored. Only operators the preview can construct are accepted: TEMPORAL_RANGE is mirrored by the query path as two bounds decomposed from a since/until pair, which this request has no way to express.

Possible values: [<, <=, ==, >, >=, IN]

Default value: ==

partition_columnstringnullable

Candidate partition column. The editor previews a mapping before it is saved, so this overrides the stored value; omitted, the stored one is used.

Possible values: non-empty and <= 250 characters

Default value: null

sample_valuesstring[]required

Values to evaluate the transform at. A comparison operator takes one; IN takes the whole list.

Possible values: >= 1, <= 50

value_transformstringnullablerequired

SQL expression containing a :value placeholder

Possible values: non-empty and <= 1024 characters

PartitionMappingPreviewSchema

{
  "is_monotonic": false,
  "mapped_column": "string",
  "operator": "==",
  "partition_column": null,
  "sample_values": [
    "string"
  ],
  "value_transform": "string"
}