Incident #20102 - added FOR UPDATE clause to fetchnextnumber, prevent…

…ing users from fetching the same number at the same time

git-svn-id: http://svn.code.sf.net/p/postbooks/code/xtupleserver/trunk@14629 ea1a15ef-c238-0410-93cb-fa28e9f07733

dbscripts/functions/fetchnextnumber.sql

@@ -17,7 +17,7 @@ BEGIN
   SELECT CAST(orderseq_number AS text), orderseq_number, orderseq_table, orderseq_numcol, COALESCE(orderseq_seqiss, ARRAY[]::seqiss[])
     INTO _number, _nextnum, _table, _numcol, __seqiss
   FROM orderseq
-  WHERE (orderseq_name=psequence);
+  WHERE (orderseq_name=psequence) FOR UPDATE;
 
   IF (NOT FOUND) THEN
     RAISE EXCEPTION 'Invalid orderseq_name %', psequence;