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From GitBox <...@apache.org>
Subject [GitHub] [incubator-superset] DiggidyDave commented on a change in pull request #7422: [WIP] Add `validate_sql_json` endpoint for checking that a given sql query is valid for the chosen database
Date Thu, 02 May 2019 16:44:57 GMT
DiggidyDave commented on a change in pull request #7422: [WIP] Add `validate_sql_json` endpoint
for checking that a given sql query is valid for the chosen database
URL: https://github.com/apache/incubator-superset/pull/7422#discussion_r280505004
 
 

 ##########
 File path: superset/views/core.py
 ##########
 @@ -2503,6 +2504,61 @@ def stop_query(self):
             pass
         return self.json_response('OK')
 
+    @has_access_api
+    @expose('/validate_sql_json/', methods=['POST', 'GET'])
+    @log_this
+    def validate_sql_json(self):
+        """Validates that arbitrary sql is acceptable for the given database.
+        Returns a list of error/warning annotations as json.
+        """
+        sql = request.form.get('sql')
+        database_id = request.form.get('database_id')
+        schema = request.form.get('schema') or None
+        template_params = json.loads(
+            request.form.get('templateParams') or '{}')
+
+        if len(template_params) > 0:
+            # TODO: factor the Database object out of template rendering
+            #       or provide it as mydb so we can render template params
+            #       without having to also persist a Query ORM object.
+            return json_error_response(
+                'SQL validation does not support template parameters')
+
+        session = db.session()
+        mydb = session.query(models.Database).filter_by(id=database_id).first()
+        if not mydb:
+            json_error_response(
+                'Database with id {} is missing.'.format(database_id))
+
+        spec = mydb.db_engine_spec
+        if not spec.engine in SQL_VALIDATORS_BY_ENGINE:
+            return json_error_response(
 
 Review comment:
   Similarly, **most** databases are going to turn up empty here in at least the near-medium
term. This should not return a 500, it is a reasonable, valid response to say "can't do this".

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