Function ParseExprKindName

src/backend/parser/parse_expr.c:3171–3269

* Produce a string identifying an expression by kind. * * Note: when practical, use a simple SQL keyword for the result. If that * doesn't work well, check call sites to see whether custom error message * strings are required. */

 * strings are required.
 */
const char *
ParseExprKindName(ParseExprKind exprKind)
{
	switch (exprKind)
	{
		case EXPR_KIND_NONE:
			return "invalid expression context";
		case EXPR_KIND_OTHER:
			return "extension expression";
		case EXPR_KIND_JOIN_ON:
			return "JOIN/ON";
		case EXPR_KIND_JOIN_USING:
			return "JOIN/USING";
		case EXPR_KIND_FROM_SUBSELECT:
			return "sub-SELECT in FROM";
		case EXPR_KIND_FROM_FUNCTION:
			return "function in FROM";
		case EXPR_KIND_WHERE:
			return "WHERE";
		case EXPR_KIND_POLICY:
			return "POLICY";
		case EXPR_KIND_HAVING:
			return "HAVING";
		case EXPR_KIND_FILTER:
			return "FILTER";
		case EXPR_KIND_WINDOW_PARTITION:
			return "window PARTITION BY";
		case EXPR_KIND_WINDOW_ORDER:
			return "window ORDER BY";
		case EXPR_KIND_WINDOW_FRAME_RANGE:
			return "window RANGE";
		case EXPR_KIND_WINDOW_FRAME_ROWS:
			return "window ROWS";
		case EXPR_KIND_WINDOW_FRAME_GROUPS:
			return "window GROUPS";
		case EXPR_KIND_SELECT_TARGET:
			return "SELECT";
		case EXPR_KIND_INSERT_TARGET:
			return "INSERT";
		case EXPR_KIND_UPDATE_SOURCE:
		case EXPR_KIND_UPDATE_TARGET:
			return "UPDATE";
		case EXPR_KIND_GROUP_BY:
			return "GROUP BY";
		case EXPR_KIND_ORDER_BY:
			return "ORDER BY";
		case EXPR_KIND_DISTINCT_ON:
			return "DISTINCT ON";
		case EXPR_KIND_LIMIT:
			return "LIMIT";
		case EXPR_KIND_OFFSET:
			return "OFFSET";
		case EXPR_KIND_RETURNING:
			return "RETURNING";
		case EXPR_KIND_VALUES:
		case EXPR_KIND_VALUES_SINGLE:
			return "VALUES";
		case EXPR_KIND_CHECK_CONSTRAINT: