pyarrow.compute.map_lookup#
- pyarrow.compute.map_lookup(container,/,query_key,occurrence,*,options=None,memory_pool=None)#
Find the items corresponding to a given key in a Map.
For a given query key (passed via MapLookupOptions), extracteither the FIRST, LAST or ALL items from a Map that havematching keys.
- Parameters:
- containerArray-like or scalar-like
Argument to compute function.
- query_key
ScalarorObjectcanbeconvertedtoScalar The key to search for.
- occurrence
str The occurrence(s) to return from the MapAccepted values are “first”, “last”, or “all”.
- options
pyarrow.compute.MapLookupOptions, optional Alternative way of passing options.
- memory_pool
pyarrow.MemoryPool, optional If not passed, will allocate memory from the default memory pool.
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