sql toolbox examples for maintenance operations

setup/toolbox/get_occs.sql

+UPDATE keywords
+JOIN (
+  SELECT kwid, count(uid) AS n FROM sch_kw GROUP BY kwid
+) AS mycounts ON keywords.kwid = mycounts.kwid
+SET occs = mycounts.n ;

setup/toolbox/set_legacy.sql

+USE comex shared;
+
+-- 1) setting legacy status itself
+UPDATE scholars
+    SET record_status = 'legacy'
+    WHERE old_itemid IS NOT NULL ;  -- or any needed subset criterion
+
+UPDATE scholars
+    SET valid_date = CURDATE() + INTERVAL 3 MONTH
+    WHERE old_itemid IS NOT NULL ;  -- here the same criterion as before
+
+
+-- 2) preparing a batch of secret return tokens
+INSERT INTO legacy_temp_rettoks
+    SELECT luid, UUID() FROM scholars
+    WHERE record_status = "legacy" AND valid_date > CURDATE();
+
+
+-- 3) outputing all the links to send by mailing list
+SET @server_name = 'www.communityexplorer.org' ;
+SET @page_route = '/services/user/claim_profile/?token=' ;
+
+SELECT
+    email,
+    CONCAT('https://', @server_name, @page_route, rettok) AS link
+    FROM legacy_temp_rettoks
+    JOIN scholars
+        ON scholars.luid = legacy_temp_rettoks.luid ;