Python programming | Executing SQL queries with Bind Variables from python script

Опубликовано: 25 Февраль 2025
на канале: Kishan Mashru

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This is the eighth video of Database programming with Python video tutorial series. In this video, we will see how to connect to the Oracle database using the cx_oracle package and use bind variables in the query statement. The table has been created in the second video of the tutorial series.

While executing the query if you need to set some parameters at run time, then bind variables are of the perfect use.

Steps performed:
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Create Connection
Create Cursor
Prepare select statement with bind variables
Execute select statement with execute() and provide the value at this time
close the cursor
close the connection

The cx_Oracle is a Python extension module that enables access to Oracle Database. It conforms to the Python database API 2.0 specification with a considerable number of additions and a couple of exclusions.

cx_Oracle 7 has been tested with Python version 2.7, and with versions 3.5 through 3.8. You can use cx_Oracle with Oracle 11.2, 12, 18 and 19 client libraries. Oracle's standard client-server version interoperability allows connection to both older and newer databases. For example, Oracle 19c client libraries can connect to Oracle Database 11.2.

Links to all videos related to Database programming with Python
=================================================================
1. Install cx_Oracle :    • Python | How to Install python packages
2. Create connection and create table :    • Python Programming | Connect to an Or...
3. Insert record into the table with execute() :    • Python programming | Insert data into...
4. Insert multiple records into the table with executemany() :    • Python programming | How to insert mu...
5. Retrive all the data from the table using the fetchall() :    • Python programming | Select or get da...
6. Retrive one record from the table using the fetchone() :    • Python programming | Select or get da...
7. Retrive specific number of records from the table using the fetchmany() :    • How to read data from table in python...
8. Use Bind Variables in the select statement to avoid complicating the query with concatenation operation :    • Python programming | Executing SQL qu...
9. use callproc method to execute oracle procedure with parameters :    • Python programming | How to execute O...
10. use callfunc method to execute oracle function with parameters :    • How to execute Oracle Function from P...

Tools used in creating and executing the scripts:
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VSCode - Visual Studio Code
SQL Developer

Links used while creating the content:
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https://en.wikipedia.org/wiki/Pip_(pa...)

https://oracle.github.io/python-cx_Or...

https://github.com/oracle/python-cx_O...

Content and video created by - Kishan Mashru