--
--   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
--
--      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 "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.
--

-- This test will cover SHOW TABLES, SHOW SCHEMAS, etc.
-- and the DESCRIBE command.

-- first, set schema to sys and demonstrate that we can see the system tables.
SET SCHEMA SYS;
SHOW TABLES;

SET SCHEMA APP;
CREATE TABLE t1 (i int generated always as identity, d DECIMAL(5,2), test VARCHAR(20));

CREATE SCHEMA USER1;
SET SCHEMA = USER1;
CREATE TABLE t2 (i int);

CREATE SYNONYM USER1.T3 FOR USER1.T2;
CREATE VIEW v1 AS SELECT * from app.t1;
CREATE INDEX idx1 ON APP.t1 (test ASC);
CREATE PROCEDURE APP.PROCTEST(IN A INTEGER, OUT B DECIMAL(10,2))
PARAMETER STYLE JAVA READS SQL DATA LANGUAGE JAVA 
EXTERNAL NAME 'a.b.c.d.e';

-- first display all tables, then display tables in one schema
SHOW TABLES;
SHOW TABLES IN APP;

-- 'describe t1' will give error, as not in current schema
DESCRIBE t1;
DESCRIBE APP.t1;
DESCRIBE v1;

SHOW SCHEMAS;
SHOW VIEWS IN USER1;
SHOW PROCEDURES IN APP;
SHOW SYNONYMS IN USER1;

-- DERBY-2019: ensure that tables with mixed-case names can be described:
SET SCHEMA APP;
create table "CamelCaseTable" (c1 int, c2 varchar(20));
-- should fail, as unquoted stirng is treated as case-insensitive upper case:
describe CamelCaseTable;
describe APP.CamelCaseTable;
-- should find the table, as quoted string case is preserved.
describe 'CamelCaseTable';
-- should fail, as case is wrong:
describe 'CAMELCaseTable';
-- should work, note that schema name must be upper case:
describe 'APP.CamelCaseTable';
set SCHEMA USER1;
-- should work, even after changing default schema, so long as schema is right
describe 'APP.CamelCaseTable';
-- should fail, since table is in the other schema
describe 'CamelCaseTable';
-- Can use * as a wildcard for table name:
describe '*';
describe 'APP.*';
-- Observe behavior with empty string:
describe '';

