PostgreSQLのrow-level lockの動きについて – Qiita
struct HeapTupleHeaderData { union { HeapTupleFields t_heap; DatumTupleFields t_datum; } t_choice; ItemPointerData t_ctid; /* current TID of this or newer tuple (or a * speculative insertion token) */ /* Fields below here must match MinimalTupleData! */ #define FIELDNO_HEAPTUPLEHEADERDATA_INFOMAS…
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