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#------------------------------------------------------------------------------
# Copyright (c) 2016, 2022, Oracle and/or its affiliates.
#
# This software is dual-licensed to you under the Universal Permissive License
# (UPL) 1.0 as shown at https://oss.oracle.com/licenses/upl and Apache License
# 2.0 as shown at http://www.apache.org/licenses/LICENSE-2.0. You may choose
# either license.
#
# If you elect to accept the software under the Apache License, Version 2.0,
# the following applies:
#
# Licensed 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
#
# https://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.
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# bind_insert.py
#
# Demonstrates how to insert a row into a table using bind variables.
#------------------------------------------------------------------------------
import oracledb
import sample_env
# determine whether to use python-oracledb thin mode or thick mode
if not sample_env.get_is_thin():
oracledb.init_oracle_client(lib_dir=sample_env.get_oracle_client())
connection = oracledb.connect(sample_env.get_main_connect_string())
#------------------------------------------------------------------------------
# "Bind by position"
#------------------------------------------------------------------------------
rows = [
(1, "First"),
(2, "Second"),
(3, "Third"),
(4, "Fourth"),
(5, None), # Insert a NULL value
(6, "Sixth"),
(7, "Seventh")
]
cursor = connection.cursor()
# predefine maximum string size to avoid data scans and memory reallocations;
# the None value indicates that the default processing can take place
cursor.setinputsizes(None, 20)
cursor.executemany("insert into mytab(id, data) values (:1, :2)", rows)
#------------------------------------------------------------------------------
# "Bind by name"
#------------------------------------------------------------------------------
rows = [
{"d": "Eighth", "i": 8},
{"d": "Ninth", "i": 9},
{"d": "Tenth", "i": 10}
]
cursor = connection.cursor()
# Predefine maximum string size to avoid data scans and memory reallocations
cursor.setinputsizes(d=20)
cursor.executemany("insert into mytab(id, data) values (:i, :d)", rows)
#------------------------------------------------------------------------------
# Inserting a single bind still needs tuples
#------------------------------------------------------------------------------
rows = [
("Eleventh",),
("Twelth",)
]
cursor = connection.cursor()
cursor.executemany("insert into mytab(id, data) values (11, :1)", rows)
#------------------------------------------------------------------------------
# Now query the results back
#------------------------------------------------------------------------------
# Don't commit - this lets the demo be run multiple times
# connection.commit()
for row in cursor.execute('select * from mytab'):
print(row)