kylepbit commented on a change in pull request #9368: URL: https://github.com/apache/arrow/pull/9368#discussion_r652296037
########## File path: format/FlightSQL.proto ########## @@ -0,0 +1,337 @@ +/* + * 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 + * with the License. You may obtain a copy of the License at + * <p> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p> + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +syntax = "proto3"; + +option java_package = "org.apache.arrow.flight.sql.impl"; +package arrow.flight.protocol.sql; + +/* + * Wrapper for the result of a "GetSQLInfo" action. + */ +message ActionGetSQLInfoResult { + /* + * Values are modelled after ODBC's SQLGetInfo() function. This information is intended to provide + * Flight SQL clients with basic, SQL syntax and SQL functions related information. + * More information types can be added in future releases. + * E.g. more SQL syntax support types, scalar functions support, type conversion support etc. + * + * Initially, Flight SQL will support the following information types: + * - Server Information + * - + * + * 1. Server Information: Provides basic information about the Flight SQL Server. + * + * The name of the Flight SQL Server. + * FLIGHT_SQL_SERVER_NAME + * + * The native version of the Flight SQL Server. + * FLIGHT_SQL_SERVER_VERSION + * + * The Arrow version of the Flight SQL Server. + * FLIGHT_SQL_SERVER_ARROW_VERSION + * + * Indicates whether the Flight SQL Server is read only. + * FLIGHT_SQL_SERVER_READ_ONLY + * + * Indicates whether the Flight SQL Server supports both read and write. + * FLIGHT_SQL_SERVER_READ_WRITE + * + * 2. SQL Syntax Information: provides information about SQL syntax supported by the Flight SQL Server. + * + * Indicates whether the Flight SQL Server supports CREATE and DROP of catalogs. + * In a SQL environment, a catalog is a collection of schemas. + * SQL_DDL_CATALOG + * + * Indicates whether the Flight SQL Server supports CREATE and DROP of schemas. + * In a SQL environment, a catalog is a collection of tables, views, indexes etc. + * SQL_DDL_SCHEMA + * + * Indicates whether the Flight SQL Server supports CREATE and DROP of tables. + * In a SQL environment, a table is a collection of rows of information. Each row of information + * may have one or more columns of data. + * SQL_DDL_TABLE + * + * Indicates the case sensitivity of catalog, table and schema names. + * SQL_IDENTIFIER_CASE + * + * Indicates the supported character(s) used to surround a delimited identifier. + * SQL_IDENTIFIER_QUOTE_CHAR + * + * Indicates case sensitivity of quoted identifiers. + * SQL_QUOTED_IDENTIFIER_CASE + * + */ + map<string, GetSQLInfoValue> flight_sql_info = 1; + + // Implementation specific custom SQLInfo values. + map<string, GetSQLInfoValue> custom_info = 2; +} + +/* + * Wrapper for values returned in ActionGetSQLInfoResult. + */ +message GetSQLInfoValue { + oneof value { + string string_value = 1; + int32 integer_value = 2; + int32 integer_bitmask = 3; + int32 integer_flag = 4; + bytes binary_value = 5; + int64 long_value = 6; + } +} + +/* + * Request message for the "GetCatalogs" action on a + * Flight SQL enabled backend. + * Requests a list of catalogs available in the server. + */ +message ActionGetCatalogsRequest { + /* + * Specifies the order of result values. + */ + ResultsOrder order = 1; +} + +/* + * Wrap the result of a "GetCatalogs" action. + */ +message ActionGetCatalogsResult { + repeated string catalog = 1; +} + +/* + * Request message for the "GetSchemas" action on a + * Flight SQL enabled backend. + * Requests a list of schemas available in the server. + */ +message ActionGetSchemasRequest { + /* + * Specifies the order of result values with precedence: + * - catalog + * - schema + */ + ResultsOrder order = 1; + + /* + * Specifies the Catalog to search for schemas. + * If omitted, then schemas for all catalogs are searched. + */ + string catalog = 2; + + /* + * Specifies a filter pattern for schemas to search for. + * When no schema_filter_pattern is provided, the pattern will not be used to narrow the search. + * In the pattern string, two special characters can be used to denote matching rules: + * - "%" means to match any substring with 0 or more characters. + * - "_" means to match any one character. + */ + string schema_filter_pattern = 3; Review comment: @emkornfield - rather than define new pseudo tables, would it be better to align to what's already in the INFORMATION_SCHEMA? -- This is an automated message from the Apache Git Service. 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