Question

我在sqlite3数据库中有数百万行。专栏分数＆＃39;单行包含以下示例：

{1399808086,1366221142,1374614902,1374608759,1375598069,1375270116,1935207612,1914502332,1913478333,1930188205,1934563311,1942881023,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988 ... up to nearly 1'000 numbers, ending with }

搜索列＆＃39;指向＆＃39;的行的最佳方法是什么？包括
a）所有三个示例搜索值 1366221142,1374614902,1374608759
（上述内容中的位置二，三和四）

b）尽可能多（3或2或1）上述3个示例搜索值

我使用索引进行了尝试，但搜索了LIKE和＆＃39;％1366221142％＆＃39;需要＆＃34;永远＆＃34;。

实际上我是用FTS5尝试的，但导入新创建的虚拟表似乎需要几天时间。

你知道其他任何可能吗？

Answer 1

如果你可以使用Python，那么这种方法非常快＃＆＃39;

import sqlite3
conn = sqlite3.connect(':memory:')

points = '{1399808086,1366221142,1374614902,1374608759,1375598069,1375270116,1935207612,1914502332,1913478333,1930188205,1934563311,1942881023,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860,1929778348,1900414380,1883651988,1373508175,-778100129,-788765075,-788763091,-790856156,-790835404,-791756027,-795938489,-779165370,-778051210,-740437658,-749943514,-754136794,-770946570,1376606678,1380850053,1380854148,1381902468,1381971092,308228244,324940180,324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260,1913458860}'

conn.execute('CREATE TABLE something (recno, points)')

for r in range(10000):
    conn.execute('INSERT INTO something (recno, points) values (?,?)', (r, points))

seeking = ['1366221142', '1374614902', '1374608759']
first = True
for row in conn.execute('SELECT recno, points FROM something'):
    pointsList = points[1:-1].split(',')
    counts = { _:pointsList.count(_) for _ in seeking }
    if first:
        print (row)
        print (counts)  
        first = False

（删节）输出是：

（0，＆＃39; {1399808086,1366221142,1374614902,1374608759,1375598069,1375270116,1935207612,1914502332,1913478333,1930188205,1934563311,1942881023,1373508175，-778100129，-788765075，-788763091，-790856156， - 790835404，-791756027，-795938489，-779165370，... 324948372,327078869,292409717,275550503,275554606,275547438,812554558,812489022,1894554398,1895733774,1895741966,1912515343,1943993629,1935471709,1918694493,1914490972,1913409788,1913475260， 1913458860}＆＃39;） {＆＃39; 1374614902＆＃39;：1，＆＃39; 1374608759＆＃39;：1，＆＃39; 1366221142＆＃39;：1}

请注意，代码会安排将10,000个字符串副本（扩展到1,000个数字）放入数据库，然后处理它们。当然，数据库在内存中，这是一个需要考虑的因素。

你可以尝试一下。

在一列中搜索950个数字的最佳方式是什么？

1 个答案: