58 lines
1.9 KiB
Python
58 lines
1.9 KiB
Python
#------------------------------------------------------------------------------
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# Copyright (c) 2017, 2021, Oracle and/or its affiliates. All rights reserved.
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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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# universal_rowids.py
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# This script demonstrates the use of universal rowids. Universal rowids are
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# used to identify rows in index organized tables.
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#
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# This script requires cx_Oracle 6.0 and higher.
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#------------------------------------------------------------------------------
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import datetime
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import cx_Oracle as oracledb
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import sample_env
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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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# truncate table so sample can be rerun
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connection = oracledb.connect(sample_env.get_main_connect_string())
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cursor = connection.cursor()
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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)", row)
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connection.commit()
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# fetch the rowids from the table
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rowids = [r for r, in cursor.execute("select rowid from TestUniversalRowids")]
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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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