schema = context['schema'] #'_00000003'
vStep = 100
SqlQuery('''
   -- Создаем временный индекс
   do $$
   begin
      dblink(''CREATE INDEX CONCURRENTLY "iЛид-РегламентДокументСозданиеДатаNULL_Tmp"
        ON {schema}."Лид"
        USING btree
        ("Регламент", "@Документ")
        WHERE "СозданиеДата" IS NULL;'')
   end;
   $$;
'''.format(schema = schema))

resTheme = SqlQuery('''
   WITH recursive Regs as (
      SELECT
         x."@Регламент" "Регламент",
         x."Раздел@"
      FROM {schema}."Регламент" x
      WHERE "Раздел" = vMainReg
      UNION ALL
      SELECT
         r."@Регламент" "Регламент",
         r."Раздел@"
      FROM Regs t
      INNER JOIN {schema}."Регламент" r
      ON t."Регламент" = r."Раздел")
   SELECT "Регламент"
   FROM Regs
   WHERE "Раздел@" IS NOT TRUE
'''.format(schema = schema))

for rec in resTheme:
   vCurLead = 0
   while True:
      vNextLead = SqlQueryScalar('''
         SELECT max_id
         FROM dblink(''
            SET search_path TO "_00000003", public;
            WITH
               sel AS (
                  SELECT
                     l."@Документ"
                  FROM "Лид" l
                  WHERE
                     l."Регламент" = {vTheme} AND
                     l."@Документ" > {vCurLead} '' AND
                     l."СозданиеДата" IS NULL
                  ORDER BY l."Регламент", l."@Документ"
                  LIMIT {vStep}
               ),
               upd AS (
                  UPDATE "Лид" l
                  SET
                     "СозданиеДата" = date_trunc('' || ''''''day'''''' || '', l."ДатаСоздания")
                  FROM sel d
                  WHERE
                     l."@Документ" = d."@Документ"
                  RETURNING l."@Документ"
               )
            SELECT max("@Документ") max_id
            FROM upd;
         '') t ;
      '''.format(vTheme=vTheme, vCurLead=vCurLead, vStep=vStep))
      if vNextLead is Null:
         break
      vCurLead = vNextLead
SqlQuery('''
   -- Удаление временного индекса
   do $$
   begin
      loop
         begin
            LOCK TABLE {schema}."Лид" IN ACCESS EXCLUSIVE MODE NOWAIT;
            DROP INDEX {schema}."iЛид-РегламентДокументСозданиеДатаNULL_Tmp";
         exception when lock_not_available then
            continue;
         end;
         exit;
      end loop;
   end;
   $$;
''').format(schema = schema))