MS Access 查询
我必须了解有关 MS Access 查询的一些知识,这就是我来这里的原因。 首先 - 我的任务列表是用拉脱维亚语写的(讨厌那样),这就是为什么我无法理解简单的事情。 这是我的任务之一:“进行四个简单的查询,其中显示特定、非特定、数字间隔、小于和大于。” 可能我没有正确翻译我的任务,但我无法理解,特定和非特定查询意味着什么。 这对我来说太简单了,这就是我不明白的原因。
我还想问,是否有任何 SQL 命令,它的作用与 PHP 函数 substr() 相同。当我尝试使用 SQL 命令时,我每天都会使用这些命令编写 MySQL 查询,但在 MS Access 中不起作用。
我希望有人可以帮助我解决这个问题:) 谢谢!
/抢
I must understand few things about MS access queries, and this is why I'm coming here.
First of all - my task list is written in Latvian (hate that), this is why I can't understand simple things.
Here is my one of tasks: "Make four simple queries, where shows specific, not-specific, number intervals, less than and greater than."
Probably I didn't translated my task correctly, but I can't understand, what does means specific and not-specific query.
This is too simple for me, and this is why I don't get it.
And also I wanted to ask, if there is any SQL commands, which does the same thing like in PHP function substr(). As I tried to use SQL commands, which I use daily writing MySQL queries, does not work in MS Access.
I hope, that some one could help me about this :) Thanks!
/Rob
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以下是一些可能有帮助的参考:
基础 Microsoft Access 2000 的 Jet SQL
Access 2000 中级 Microsoft Jet SQL
Access 2000 的高级 Microsoft Jet SQL
对于 substr,您可以使用 Mid、Left、Right、InStr 和 InstrRev。
Here are some references that may help:
Fundamental Microsoft Jet SQL for Access 2000
Intermediate Microsoft Jet SQL for Access 2000
Advanced Microsoft Jet SQL for Access 2000
As for substr, you can use Mid, Left, Right, InStr and InstrRev.