feat: add type_generic and is_dttm to table metadata

.pylintrc

@@ -81,7 +81,7 @@ confidence=
 # --enable=similarities". If you want to run only the classes checker, but have
 # no Warning level messages displayed, use"--disable=all --enable=classes
 # --disable=W"
-disable=long-builtin,dict-view-method,intern-builtin,suppressed-message,no-absolute-import,unpacking-in-except,apply-builtin,delslice-method,indexing-exception,old-raise-syntax,print-statement,cmp-builtin,reduce-builtin,useless-suppression,coerce-method,input-builtin,cmp-method,raw_input-builtin,nonzero-method,backtick,basestring-builtin,setslice-method,reload-builtin,oct-method,map-builtin-not-iterating,execfile-builtin,old-octal-literal,zip-builtin-not-iterating,buffer-builtin,getslice-method,metaclass-assignment,xrange-builtin,long-suffix,round-builtin,range-builtin-not-iterating,next-method-called,parameter-unpacking,unicode-builtin,unichr-builtin,import-star-module-level,raising-string,filter-builtin-not-iterating,using-cmp-argument,coerce-builtin,file-builtin,old-division,hex-method,missing-docstring,too-many-lines,ungrouped-imports,import-outside-toplevel,raise-missing-from,super-with-arguments,bad-option-value,too-few-public-methods
+disable=long-builtin,dict-view-method,intern-builtin,suppressed-message,no-absolute-import,unpacking-in-except,apply-builtin,delslice-method,indexing-exception,old-raise-syntax,print-statement,cmp-builtin,reduce-builtin,useless-suppression,coerce-method,input-builtin,cmp-method,raw_input-builtin,nonzero-method,backtick,basestring-builtin,setslice-method,reload-builtin,oct-method,map-builtin-not-iterating,execfile-builtin,old-octal-literal,zip-builtin-not-iterating,buffer-builtin,getslice-method,metaclass-assignment,xrange-builtin,long-suffix,round-builtin,range-builtin-not-iterating,next-method-called,parameter-unpacking,unicode-builtin,unichr-builtin,import-star-module-level,raising-string,filter-builtin-not-iterating,using-cmp-argument,coerce-builtin,file-builtin,old-division,hex-method,missing-docstring,too-many-lines,ungrouped-imports,import-outside-toplevel,raise-missing-from,super-with-arguments,bad-option-value,too-few-public-methods,too-many-locals
 
 
 [REPORTS]

superset-frontend/spec/javascripts/datasource/DatasourceEditor_spec.jsx

@@ -86,20 +86,23 @@ describe('DatasourceEditor', () => {
         nullable: true,
         default: '',
         primary_key: false,
+        is_dttm: true,
       },
       {
         name: 'gender',
         type: 'VARCHAR(32)',
         nullable: true,
         default: '',
         primary_key: false,
+        is_dttm: false,
       },
       {
         name: 'new_column',
         type: 'VARCHAR(10)',
         nullable: true,
         default: '',
         primary_key: false,
+        is_dttm: false,
       },
     ];
 

superset-frontend/src/datasource/DatasourceEditor.jsx

@@ -379,6 +379,7 @@ class DatasourceEditor extends React.PureComponent {
   }
 
   setColumns(obj) {
+    // update calculatedColumns or databaseColumns
     this.setState(obj, this.validateAndChange);
   }
 
@@ -414,13 +415,15 @@ class DatasourceEditor extends React.PureComponent {
           type: col.type,
           groupby: true,
           filterable: true,
+          is_dttm: col.is_dttm,
         });
         results.added.push(col.name);
-      } else if (currentCol.type !== col.type) {
+      } else if (currentCol.type !== col.type || col.is_dttm) {
         // modified column
         finalColumns.push({
           ...currentCol,
           type: col.type,
+          is_dttm: col.is_dttm,
         });
         results.modified.push(col.name);
       } else {

superset/connectors/sqla/models.py

@@ -677,13 +677,25 @@ def external_metadata(self) -> List[Dict[str, str]]:
             for col in cols:
                 try:
                     if isinstance(col["type"], TypeEngine):
-                        col["type"] = db_engine_spec.column_datatype_to_string(
+                        db_type = db_engine_spec.column_datatype_to_string(
                             col["type"], db_dialect
                         )
+                        type_spec = db_engine_spec.get_column_spec(db_type)
+                        col.update(
+                            {
+                                "type": db_type,
+                                "type_generic": type_spec.generic_type
+                                if type_spec
+                                else None,
+                                "is_dttm": type_spec.is_dttm if type_spec else None,
+                            }
+                        )
                 # Broad exception catch, because there are multiple possible exceptions
                 # from different drivers that fall outside CompileError
                 except Exception:  # pylint: disable=broad-except
-                    col["type"] = "UNKNOWN"
+                    col.update(
+                        {"type": "UNKNOWN", "generic_type": None, "is_dttm": None,}
+                    )
         return cols
 
     @property