fix:select system.public.tables will return error (#174)

* fix:select system.public.tables will return error

* edit:rename record_schema_key to projected_record_schema

system_catalog/src/tables.rs

@@ -139,8 +139,8 @@ impl<M: Manager> SystemTable for Tables<M> {
             .all_catalogs()
             .map_err(|e| Box::new(e) as _)
             .context(table_engine::table::Scan { table: self.name() })?;
-        let mut builder =
-            RecordBatchWithKeyBuilder::new(self.schema.clone().to_record_schema_with_key());
+        let projected_record_schema = request.projected_schema.to_record_schema_with_key();
+        let mut builder = RecordBatchWithKeyBuilder::new(projected_record_schema);
 
         let projector = request
             .projected_schema

tests/cases/01_system/system_tables.result

@@ -8,7 +8,9 @@ affected_rows: 0
 
 SELECT    `timestamp`,    `catalog`,    `schema`,    `table_name`,    `engine`FROM    system.public.tablesWHERE    table_name = '01_system_table1';
 
-Failed to execute query, err: Server(ServerError { code: 500, msg: "Failed to execute interpreter, query: SELECT     `timestamp`,     `catalog`,     `schema`,     `table_name`,     `engine` FROM     system.public.tables WHERE     table_name = '01_system_table1';. Caused by: Failed to execute select, err:Failed to execute logical plan, err:Failed to collect record batch stream, err:Stream error, msg:Convert from arrow record batch, err:External error: Execution error: Failed to read table, partition:3, err:Failed to scan table, table:tables, err:Failed to append datum, err:Data type conflict, expect:UInt64, given:String." })
+timestamp,catalog,schema,table_name,engine,
+Timestamp(Timestamp(0)),String(StringBytes(b"ceresdb")),String(StringBytes(b"public")),String(StringBytes(b"01_system_table1")),String(StringBytes(b"Analytic")),
+
 
 SHOW TABLES `name` LIKE '01_system_table1';