我如何使cx-oracle将查询的结果绑定到字典而不是元组？ [英] How can I make cx-oracle bind the results of a query to a dictionary rather than a tuple?

问题描述

这是我的代码。我想找到一种方法来将查询的结果作为字典列表返回，而不是元组列表。看起来cx_oracle支持这一点与文档的部分谈论绑定。虽然我无法弄清楚它是如何工作的。

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 with parts of the documentation talking about 'binding'. Though I can't figure out how it works.

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)
    result = curs.fetchall()
    for row in result:
        print row[13] #CATEGORY field order
        print row['CATEGORY'] # <- I want this to work ('CATEGORY' is the name of a field in the 'sometable' table)
    curs.close()

推荐答案

Bindvars用于执行查询，例如

Bindvars are used to execute query such as

• 按名称（指定命名参数）

• By name(given named parameters)

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

将打印：['BOOKID']

will print : ['BOOKID']

• 通过给定值列表的位置

• 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 )

你可以尝试这样的：

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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