本文介绍了SQLite3 Python:executemany SELECT的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试使用executemany函数将具有某些WHERE约束的所有行从一张表中取出

I'm trying to get all the rows out of a table in one line with some WHERE constraints using the executemany function

import sqlite3

con = sqlite3.connect('test.db')
cur = con.cursor()

cur.execute('CREATE TABLE IF NOT EXISTS Genre (id INTEGER PRIMARY KEY, genre TEXT NOT NULL)')

values = [
        (None, 'action'),
        (None, 'adventure'),
        (None, 'comedy'),
        ]


cur.executemany('INSERT INTO Genre VALUES(?, ?)', values)

ids=[1,2]

cur.executemany('SELECT * FROM Genre WHERE id=?', ids)

rows = cur.fetchall()
print rows

错误

cur.executemany('SELECT * FROM Genre WHERE id=?', ids)
sqlite3.ProgrammingError: You cannot execute SELECT statements in executemany()

推荐答案

使用execute()执行返回数据的查询.

Use execute() to execute a query that returns data.

您要么必须使用循环，要么使用IN (id1, id2, id3) where子句:

You'll either have to use a loop, or use a IN (id1, id2, id3) where clause:

cur.execute('SELECT * FROM Genre WHERE id in ({0})'.format(', '.join('?' for _ in ids)), ids)

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