NEAREST_BY_JOIN error condition
Invalid nearest-by join.
CROSS_JOIN_NOT_ENABLED
Nearest-by join is implemented as a bounded cross-product internally and is therefore rejected when spark.sql.crossJoin.enabled = false. Set spark.sql.crossJoin.enabled = true to permit it, or rewrite the query without nearest-by.
NON_ORDERABLE_RANKING_EXPRESSION
The ranking expression <expression> of type <type> is not orderable. Provide an expression that returns an orderable type, such as a numeric distance like abs(a.col - b.col) or a numeric similarity score.
NUM_RESULTS_OUT_OF_RANGE
The number of results <numResults> must be between <min> and <max>. Update the literal in APPROX NEAREST <numResults> BY ... (or EXACT NEAREST <numResults> BY ...) to fall within that range.
STREAMING_NOT_SUPPORTED
Nearest-by join is not supported with streaming DataFrames/Datasets.
UNSUPPORTED_DIRECTION
Unsupported nearest-by join direction '<direction>'. Supported nearest-by join directions include: <supported>.
UNSUPPORTED_JOIN_TYPE
Unsupported nearest-by join type <joinType>. Supported types: <supported>.
UNSUPPORTED_MODE
Unsupported nearest-by join mode '<mode>'. Supported modes include: <supported>.