88 lines
3.2 KiB
Python
88 lines
3.2 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2017, 2022, Oracle and/or its affiliates.
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#
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# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
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#
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# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
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# Canada. All rights reserved.
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#
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#
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# This software is dual-licensed to you under the Universal Permissive License
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# (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
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# 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
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# either license.
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#
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# If you elect to accept the software under the Apache License, Version 2.0,
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# the following applies:
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#------------------------------------------------------------------------------
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#------------------------------------------------------------------------------
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# universal_rowids.py
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#
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# Demonstrates the use of universal rowids. Universal rowids are used to
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# identify rows in index organized tables.
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#------------------------------------------------------------------------------
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import datetime
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import oracledb
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import sample_env
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# determine whether to use python-oracledb thin mode or thick mode
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if not sample_env.get_is_thin():
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oracledb.init_oracle_client(lib_dir=sample_env.get_oracle_client())
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DATA = [
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(1, "String #1", datetime.datetime(2017, 4, 4)),
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(2, "String #2", datetime.datetime(2017, 4, 5)),
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(3, "A" * 250, datetime.datetime(2017, 4, 6))
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]
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connection = oracledb.connect(user=sample_env.get_main_user(),
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password=sample_env.get_main_password(),
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dsn=sample_env.get_connect_string())
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with connection.cursor() as cursor:
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# truncate table so sample can be rerun
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print("Truncating table...")
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cursor.execute("truncate table TestUniversalRowids")
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# populate table with a few rows
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print("Populating table...")
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for row in DATA:
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print("Inserting", row)
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cursor.execute("insert into TestUniversalRowids values (:1, :2, :3)",
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row)
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connection.commit()
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# fetch the rowids from the table
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cursor.execute("select rowid from TestUniversalRowids")
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rowids = [r for r, in cursor]
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# fetch each of the rows given the rowid
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for rowid in rowids:
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print("-" * 79)
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print("Rowid:", rowid)
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cursor.execute("""
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select IntCol, StringCol, DateCol
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from TestUniversalRowids
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where rowid = :rid""",
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{"rid": rowid})
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int_col, string_col, dateCol = cursor.fetchone()
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print("IntCol:", int_col)
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print("StringCol:", string_col)
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print("DateCol:", dateCol)
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