Module query_util 

Structs

COLNAME_CACHE

Global column metadata cache keyed by datasource/generation/query hash.

MetadataCacheKey

Functions

column_metadata_cache_snapshot

query

query_cached

query_first_row

Query first row and map columns into RowData with column names preserved.

query_first_row_cached

Same as query_first_row but with a shared column-names cache to reduce metadata lookups.