storage: add 'NotEqual' criteria (#5931)

tests/test_sql.py

@@ -499,6 +499,7 @@ def test_sql_table_select():
     assert len(data_class.select([st.Less('id', 26)])) == 25
     assert len(data_class.select([st.Less('id', 25), st.GreaterOrEqual('id', 10)])) == 15
     assert len(data_class.select([st.Less('id', 25), st.GreaterOrEqual('id', 10), lambda x: x.id >= 15])) == 10
+    assert len(data_class.select([st.NotEqual('id', 26)])) == 49
 
 
 @postgresql

tests/test_storage.py

@@ -204,6 +204,7 @@ def test_select():
     assert len(Foobar.select(lambda x: x.unique_value < 26)) == 25
     assert len(Foobar.select([st.Less('unique_value', 26)])) == 25
     assert len(Foobar.select([st.Less('unique_value', 25), st.GreaterOrEqual('unique_value', 10)])) == 15
+    assert len(Foobar.select([st.NotEqual('unique_value', 25)])) == 49
 
 
 def test_select_datetime():

wcs/qommon/storage.py

@@ -93,6 +93,9 @@ class Greater(Criteria):
 class Equal(Criteria):
     op = operator.eq
 
+class NotEqual(Criteria):
+    op = operator.ne
+
 class LessOrEqual(Criteria):
     op = operator.le
 

wcs/sql.py

@@ -76,6 +76,8 @@ class LessOrEqual(Criteria):
 class GreaterOrEqual(Criteria):
     sql_op = '>='
 
+class NotEqual(Criteria):
+    sql_op = '!='
 
 def get_name_as_sql_identifier(name):
     name = qommon.misc.simplify(name)