Function StripRelabels

pg_documentdb/src/opclass/index_support.c:1982–1991

Strips any RelabelType nodes from the expression, returning the underlying expression. */

/* Strips any RelabelType nodes from the expression, returning the underlying expression. */
static Expr *
StripRelabels(Expr *expr)
{
	while (expr != NULL && IsA(expr, RelabelType))
	{
		expr = (Expr *) ((RelabelType *) expr)->arg;
	}

	return expr;
}


/* Returns the sort path from a constant BSON expression, or NULL if not applicable. */