| /************************************************************ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
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| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
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| * KIND, either express or implied. See the License for the |
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| *************************************************************/ |
| |
| |
| CREATE OR REPLACE |
| PROCEDURE model_selection_workloads( |
| dataset TEXT, --dataset name |
| selected_columns TEXT[], --used columns |
| N INTEGER, --explore N models |
| K INTEGER, --keep K models |
| config_file TEXT --config file path |
| ) |
| LANGUAGE plpgsql |
| AS $$ |
| DECLARE |
| -- global inputs/outputs |
| result_status TEXT; |
| column_list TEXT; |
| |
| BEGIN |
| -- combine the columns into a string |
| column_list := array_to_string(selected_columns, ', '); |
| EXECUTE format(' |
| WITH batch_rows AS ( |
| SELECT %s |
| FROM %I |
| ORDER BY RANDOM() |
| ) |
| SELECT model_selection_trails_workloads( |
| json_agg(row_to_json(t))::text, %s, %s, %L |
| ) |
| FROM batch_rows AS t', column_list, dataset, N, K, config_file) INTO result_status; |
| RAISE NOTICE '1. model_selection result: %', result_status; |
| END; $$; |