fix case issuei

tests/script/general/db/topic1.sim

@@ -367,7 +367,7 @@ sql_error topic db keep 30
 sql alter database db keep 30
 sql show databases
 print keep $data7_db
-if $data7_db != 20,20,30 then
+if $data7_db != 30,30,30 then
   return -1
 endi
 
@@ -375,14 +375,14 @@ sql_error alter topic db keep 40
 sql alter database db keep 40
 sql show databases
 print keep $data7_db
-if $data7_db != 20,20,40 then
+if $data7_db != 40,40,40 then
   return -1
 endi
 
 sql alter database db keep 40
 sql alter database db keep 30
 sql alter database db keep 20
-sql_error alter database db keep 10
+sql_error alter database db keep 10.0
 sql_error alter database db keep 9
 sql_error alter database db keep 1
 sql_error alter database db keep 0