AdistTS: Fix update with table exists tests.

src/Model/Pollutants/Pollutants.py

@@ -138,16 +138,12 @@ class PollutantCharacteristics(SQLSubModel):
     @classmethod
     def _db_update(cls, execute, version, data=None):
         major, minor, release = version.strip().split(".")
-        created = False
-
-        if major == "0" and minor == "0":
-            if int(release) < 11:
-                cls._db_create(execute)
-                created = True
 
         if major == "0" and int(minor) < 2:
-            if not created:
+            if cls.is_table_exists(execute, "Pollutants_characteristic"):
                 cls._db_update_to_0_2_0(execute, data)
+            else:
+                cls._db_create(execute)
 
         return cls._update_submodel(execute, version, data)
 
@@ -370,15 +366,13 @@ class Pollutants(SQLSubModel):
         major, minor, release = version.strip().split(".")
         created = False
 
-        if major == "0" and minor == "0":
-            if int(release) < 11:
+        if major == "0" and int(minor) < 2:
+            if cls.is_table_exists(execute, "Pollutants"):
+                cls._db_update_to_0_2_0(execute, data)
+            else:
                 cls._db_create(execute)
                 created = True
 
-        if major == "0" and int(minor) < 2:
-            if not created:
-                cls._db_update_to_0_2_0(execute, data)
-
         if not created:
             return cls._update_submodel(execute, version, data)