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我在表中插入几行，我不知道为什么插入的行不按插入顺序-

这是java代码 -

for (Entry<Integer, String> entry : treeMap.entrySet()) {
    System.out.println("Key: " + entry.getKey() + ". Value: " + entry.getValue());
    insert(entry.getKey(), entry.getValue()); //method to insert a single record
}

插入查询：

insert into heightList(heightId,height) values(?,?)

sysout日志是：（按顺序打印所有键）

Key: 1. Value: some text
Key: 2. Value: some text
Key: 3. Value: some text
Key: 4. Value: some text
Key: 5. Value: some text
Key: 6. Value: some text
Key: 7. Value: some text
Key: 8. Value: some text
Key: 9. Value: some text
Key: 10. Value: some text
Key: 11. Value: some text
Key: 12. Value: some text
Key: 13. Value: some text
Key: 14. Value: some text
Key: 15. Value: some text
Key: 16. Value: some text
Key: 17. Value: some text
Key: 18. Value: some text
Key: 19. Value: some text
Key: 20. Value: some text
Key: 21. Value: some text
Key: 22. Value: some text
Key: 23. Value: some text
Key: 24. Value: some text
Key: 25. Value: some text
Key: 26. Value: some text
Key: 27. Value: some text
Key: 28. Value: some text
Key: 29. Value: some text
Key: 30. Value: some text
Key: 31. Value: some text
Key: 32. Value: some text
Key: 33. Value: some text
Key: 34. Value: some text
Key: 35. Value: some text
Key: 36. Value: some text
Key: 37. Value: some text

但这是插入后我的表格的样子 -

heightId    height
1       some text
10      some text
11      some text
12      some text
13      some text
14      some text
15      some text
16      some text
17      some text
18      some text
19      some text
2       some text
20      some text
21      some text
22      some text
23      some text
24      some text
25      some text
26      some text
27      some text
28      some text
29      some text
3       some text
30      some text
31      some text
32      some text
33      some text
34      some text
35      some text
36      some text
37      some text
4       some text
5       some text
6       some text
7       some text
8       some text
9       some text

为什么行不按顺序排列，如何按顺序插入？

4

1 回答 1

4

它们按顺序插入。但看起来您正在将 id 编号（整数）插入基于文本的字段（char/varchar）中。文本排序规则不适用于数字。

如果他们要进入一个 int 字段，那么看看在做什么实际排序。

于 2013-06-23T21:42:18.783 回答