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#------------------------------------------------------------------------------
# Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
#
# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
# Canada. All rights reserved.
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# UniversalRowids.py
# This script demonstrates the use of universal rowids. Universal rowids are
# used to identify rows in index organized tables.
#
# This script requires cx_Oracle 6.0 and higher.
#------------------------------------------------------------------------------
from __future__ import print_function
import cx_Oracle
import datetime
import SampleEnv
DATA = [
(1, "String #1", datetime.datetime(2017, 4, 4)),
(2, "String #2", datetime.datetime(2017, 4, 5)),
(3, "A" * 250, datetime.datetime(2017, 4, 6))
]
# truncate table so sample can be rerun
connection = cx_Oracle.connect(SampleEnv.GetMainConnectString())
cursor = connection.cursor()
print("Truncating table...")
cursor.execute("truncate table TestUniversalRowids")
# populate table with a few rows
print("Populating table...")
for row in DATA:
print("Inserting", row)
cursor.execute("insert into TestUniversalRowids values (:1, :2, :3)", row)
connection.commit()
# fetch the rowids from the table
rowids = [r for r, in cursor.execute("select rowid from TestUniversalRowids")]
# fetch each of the rows given the rowid
for rowid in rowids:
print("-" * 79)
print("Rowid:", rowid)
cursor.execute("""
select IntCol, StringCol, DateCol
from TestUniversalRowids
where rowid = :rid""",
rid = rowid)
intCol, stringCol, dateCol = cursor.fetchone()
print("IntCol:", intCol)
print("StringCol:", stringCol)
print("DateCol:", dateCol)