feat(sqllab): Add a configuration option to disable data preview (#19104)

superset/models/core.py

@@ -212,6 +212,13 @@ class Database(
     def explore_database_id(self) -> int:
         return self.get_extra().get("explore_database_id", self.id)
 
+    @property
+    def disable_data_preview(self) -> bool:
+        # this will prevent any 'trash value' strings from going through
+        if self.get_extra().get("disable_data_preview", False) is not True:
+            return False
+        return True
+
     @property
     def data(self) -> Dict[str, Any]:
         return {
@@ -225,6 +232,7 @@ class Database(
             "allows_virtual_table_explore": self.allows_virtual_table_explore,
             "explore_database_id": self.explore_database_id,
             "parameters": self.parameters,
+            "disable_data_preview": self.disable_data_preview,
             "parameters_schema": self.parameters_schema,
         }