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sqltree is an experimental parser for SQL, providing a syntax tree for SQL queries. sample-sql-translator is a hand-written recursive-descent parser for SQL. sqloxide wraps rust bindings for sqlparser-rs into a python package.
If you want to pass data to and from the Oracle database, you use placeholders in the SQL statement as follows: sql = ('select name ' 'from customers ' 'where customer_id = :customer_id') Code language: Python (python) In this query, the :customer_id is a placeholder. It is also known as a bind variable or bind parameter.
Python is a popular general purpose dynamic scripting language. The python-oracledb driver provides Python APIs to access Oracle Database. It is an upgrade for the hugely popular cx_Oracle interface. If you are new to Python, review the Appendix: Python Primer to gain an understanding of the language.
Bind parameters—also called dynamic parameters or bind variables—are an alternative way to pass data to the database. Instead of putting the values directly into the SQL statement, you just use a placeholder like ?, :name or @name and provide the actual values using a separate API call.
V$SQL_BIND_CAPTURE displays information on bind variables used by SQL cursors. Each row in the view contains information for one bind variable defined in a cursor. This includes:
V$SQL lists statistics on shared SQL areas without the GROUP BY clause and contains one row for each child of the original SQL text entered.
25 Απρ 2016 · Finally bring the sql and params values together in the read_sql_query call. query = pd.read_sql_query(sql, db2conn, params)
