Function ExecIsExprUnsafeToConst

src/backend/executor/execExpr.c:4395–4400

* ExecIsExprUnsafeToConst * * Returns true if the expression cannot be evaluated to a const value. */

 * Returns true if the expression cannot be evaluated to a const value.
 */
static bool
ExecIsExprUnsafeToConst(Node *node)
{
	Assert(node != NULL);
	return ExecIsExprUnsafeToConst_walker(node, NULL);
}

/*
 * ExecEvalFunctionArgToConst