1 files changed, 58 insertions, 0 deletions
diff --git a/src/include/access/valid.h b/src/include/access/valid.h
new file mode 100644
index 0000000..85d476a
--- /dev/null
+++ b/src/include/access/valid.h
@@ -0,0 +1,58 @@
+/*-------------------------------------------------------------------------
+ *
+ * valid.h
+ *	  POSTGRES tuple qualification validity definitions.
+ *
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/access/valid.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef VALID_H
+#define VALID_H
+
+#include "access/htup.h"
+#include "access/htup_details.h"
+#include "access/skey.h"
+#include "access/tupdesc.h"
+
+/*
+ *		HeapKeyTest
+ *
+ *		Test a heap tuple to see if it satisfies a scan key.
+ */
+static inline bool
+HeapKeyTest(HeapTuple tuple, TupleDesc tupdesc, int nkeys, ScanKey keys)
+{
+	int			cur_nkeys = nkeys;
+	ScanKey		cur_key = keys;
+
+	for (; cur_nkeys--; cur_key++)
+	{
+		Datum		atp;
+		bool		isnull;
+		Datum		test;
+
+		if (cur_key->sk_flags & SK_ISNULL)
+			return false;
+
+		atp = heap_getattr(tuple, cur_key->sk_attno, tupdesc, &isnull);
+
+		if (isnull)
+			return false;
+
+		test = FunctionCall2Coll(&cur_key->sk_func,
+								 cur_key->sk_collation,
+								 atp, cur_key->sk_argument);
+
+		if (!DatumGetBool(test))
+			return false;
+	}
+
+	return true;
+}
+
+#endif							/* VALID_H */