WIP: String IDs

procedures/query/applyIDFilter.sql

@@ -54,19 +54,28 @@ CREATE PROCEDURE db_5_0.applyIDFilter(in sourceSet VARCHAR(255), in targetSet VA
 IDFILTER_LABEL: BEGIN
 DECLARE data VARCHAR(20000) DEFAULT NULL;
 DECLARE aggVal VARCHAR(255) DEFAULT NULL;
+DECLARE direction CHAR(4) DEFAULT NULL;
 
 #-- get aggVal if possible
 IF agg IS NOT NULL THEN
     IF versioned THEN
         -- TODO versioned queries
         SELECT 1 FROM id_agg_with_versioning_not_implemented;
+    ELSEIF agg = "max" THEN
+        SET direction = "DESC";
+    ELSEIF agg = "min" THEN
+        SET direction = "ASC ";
+    ELSE
+        SELECT 1 FROM unknown_agg_parameter;
     END IF;
+
     SET @stmtIDAggValStr = CONCAT(
-        "SELECT ",
-        agg,
-        "(id) INTO @sAggVal FROM `",
+        "SELECT e.internal_id INTO @sAggVal FROM `",
         sourceSet,
-        "`");
+        "` AS s LEFT JOIN entity_ids AS e ON (s.id=e.internal_id) WHERE s.id>99 ORDER BY CAST(e.id AS UNSIGNED INT) ",
+        direction,
+        " LIMIT 1");
+
     PREPARE stmtIDAggVal FROM @stmtIDAggValStr;
     EXECUTE stmtIDAggVal;
     DEALLOCATE PREPARE stmtIDAggVal;