How can I make cx-oracle bind the results of a query to a dictionary rather than a tuple?

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日久生厌 2021-02-02 16:16

Here is my code. I would like to find a way to have results from a query returned as a list of dictionaries rather than list of tuples. It seems like cx_oracle supports this wit

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  • 2021-02-02 16:46

    Here is a quick and dirty. Feel post a better way.

    def connect():  
        dsn = cx_Oracle.makedsn("host", 1521, "sid")
        orcl = cx_Oracle.connect('scott/tiger@' + dsn)
        curs = orcl.cursor()
        sql = "select * from sometable"
        curs.execute(sql)
        fieldNumber = 0
        fieldNames={}
        for desc in curs.description:
            fieldNames[desc[0]]=fieldNumber
            fieldNumber+=1
        result = curs.fetchall()
        for row in result:
            print str(row[fieldNames['CATEGORY']])
        curs.close()
    
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  • 2021-02-02 16:47

    Bindvars are used to execute query such as

    • By name(given named parameters)

      cursor = self.db.cursor()
      cursor.execute("SELECT bookName, author from books where Id=:bookId" , bookId="155881")
      print cursor.bindnames()
      

    will print : ['BOOKID']

    • by position given a list of values

      cursor = self.db.cursor()
      cursor.prepare("insert into books (bookId,title,author,price) values(:1, :2, :3, :4)")
      cursor.executemany(None, listOfbookwhichAreTuppleOf4Field )
      

    To get what you expected you could try something like that:

    def connect():  
        dsn = cx_Oracle.makedsn("host", 1521, "sid")
        orcl = cx_Oracle.connect('scott/tiger@' + dsn)
        curs = orcl.cursor()
        sql = "select * from sometable"
        curs.execute(sql)
        desc = [d[0] for d in curs.description]
        result = [dict(zip(desc,line)) for line in curs]
        curs.close()
    
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