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Old 03-29-2011, 09:04 AM   #1
sheshe42
 
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Default Microsoft Office Home And Student Writing a Count(

We received a question from a reader named Eric week before last about how to write a Count(Distinct) query in Access. In other database applications such as SQL Server, Oracle, and MySQL, the Count(Distinct) aggregate is used to count the number of unique items in a given rowset. For example, consider a table on SQL Server named tblColors, such as: ColorValue Red5 Green2 Blue8 Orange1 Red8 Green6 Blue2To get a count of the number of unique colors in the table, you could write a query such as:SELECT Count(Distinct Color) AS N FROM tblColorsThis would return the value 4 as there are four unique colors in the Color field in the table. Unfortunately, the Access Database Engine does not support the Count(Distinct) aggregate. To return this value from an Access table, you would need to use a subquery such as:SELECT Count(*) AS N
FROM
(SELECT DISTINCT Color FROM tblColors) AS T;Now let's say that you also want to include another aggregate value such as a Sum, and want to group by some value, in this case, Color. On SQL Server,Microsoft Office Standard, you could write this query as:SELECT Color, Sum(Value) AS Total,Microsoft Office Home And Student, Count(Distinct Color) AS N
FROM tblColors
GROUP BY ColorThis provides the following results: ColorTotalN Blue101 Green81 Orange11 Red131 Now,Microsoft Office 2010 Serial, if you're asking whether or not this should return the value of '1', the answer is yes. As I understand it, the Count(Distinct) here can be used as a test to verify the results of a given query.If your data is on a server that supports Count(Distinct), you might be able to use a pass-through query to retrieve the results. If you are working with Access data,Office 2010 Home And Student 64bit, this becomes a bit more challenging.Since we used subqueries for the previous query, we'll need to do the same here. The trick however is that we need to use two subqueries as shown in the following SQL:SELECT C.Color, Sum(C.Value) AS Total, T2.N
FROM
(SELECT T.Color,Office Professional Plus 2010 Serial, Count(T.Color) AS N
FROM
(SELECT DISTINCT Color, Count(*) AS N
FROM tblColors GROUP BY Color) AS T
GROUP BY T.Color) AS T2
INNER JOIN tblColors AS C
ON T2.Color = C.Color
GROUP BY C.Color, T2.N;You'll recognize the inner-most subquery as the subquery we used in the initial problem. This is then rolled into the outer-most subquery to return the number of colors per group.Thanks to Eric for the question and to Michael Tucker on the Access test team for the help! <div
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Old 03-29-2011, 09:29 AM   #2
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Reprinted from 376319610 at 1:43 on April 21, 2010 Reading (loading. ..) Comments (0) Category: Personal Diary
one, odd and even pages display different content -
books published in the professional, often see the header of odd and even books will show different content to a user to quickly find information in books. In Word 2000, users can easily odd and even page header in the document to display different content. -
need to set the header to open the Word document format, select , in the -
Select Then you can see the cursor in the odd page header in the flash editor, enter the odd header content; click the eyebrow editing area, enter the even page header content. -
Second,tory burch 2011, in the header to display the contents of chapter numbers and chapter headings -
want to achieve in the Word document to display the page in the header where the chapter number and chapter title of chapter content, users must first chapter headings in the document use the reunification of the chapter heading styles, and the chapter headings of multi-level symbols using the automatic numbering, and then follows the method of operation. -
Select -
select From the -
Click the -
click Domain -
click . -
Third, modify the header of the line format -
users choose to use in the document header, the header will appear in a dash across the page. If you are not satisfied with the system settings of the line format, it can be modified using the following method. -
Method 1: Select the Position the cursor position to the header, select you can see the width of the header is used for the -
If you need to modify the header of the line format, in this dialog box on the border line, color, width and other projects to be modified. For example, crossed by a single line to double solid line, the first in the pairs a solid line-type changes. -
If you do not want to use the header crossed, just in the -
Method 2: In Word 2000, crossed the header format used by the use of marking of the format, as long as the -
select In the -
Click the Method 1 to modify the operation method described in the header of the line format. After changes, click -
will document. Click -
later used in the document as long as the header, the header will be automatically applied in modified form after the dash. -
Fourth, in any position to insert a page number -
normal circumstances we are in the Word document below the top of the page or insert page numbers. In fact, Word 2000, if you want to be in the Word document page, insert page numbers anywhere. For example, the margin around the page to insert page numbers. -
Select Click -
click At this time appeared in the text box to the page where the page number. You can also add additional descriptive text in the text box for the text box to set borders and shading effects. -
using this method to set the page number all pages in this document are valid. -
practical tips: -
Word page set to solve the problem
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- Figure 1
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second step, remove the blank lines produced by the second page, then you can move the cursor anywhere on the second page, the implementation of the ,],[-
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- Figure 2
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third step, according to two [OK] button to exit the -
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- Figure 3 to set the starting page
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writing his thesis the attention of the: -
How
automatically catalogs -
Microsoft WORD we are all familiar with this software, but we did not use many functions, many of them very practical. Today, I tell you about how to use WORD automatically generated directory. This is for those who write books with WORD, helpful friends writing papers. -
Advantages: WORD automatically generated according to the directory section of the article is not only fast, but reading is also very easy to find content, just hold down the Ctrl click on a chapter in the directory will jump directly to that page, more importantly, to facilitate future changes, because the finished article will inevitably many changes, add or delete content. If the page marked by hand to the directory, the contents of a change in the middle of the back pages all to change is a very annoying thing. Should be automatically generated directory, you can modify any content of the article, last updated your list will be re-mapped to the corresponding page directory up. -
steps: (the following to operate in WORD2003, other versions of WORD slightly different, but similar 。)-
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1. In the [format] select [Style and Format] -
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2. Appears to the right of a The Heading 1, Heading 2, Heading 3 were applied to the text on the title of each chapter. For example: the text in the The If you have 1.1.1 × × × it is defined by Title 3. -
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3. Of course, Heading 1, Heading 2, Heading 3 properties (eg font size, centered, bold, etc.) can modify the. Modification method: Right-click on the -
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4. 1,2,3, respectively, with the title to define the text of each chapter. Definition is very convenient, as long as the cursor point to the forth, II, III defined the same way, until the full section of tail. -
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5. When are defined, we can generate the directory. Move the cursor to the beginning of the article directory you want to insert a blank spot, select [Insert] - [quote] - [Index and Tables] -
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6. Select the second tab [catalog], then the determination of the lower right. On OK. -
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on the map is automatically generated directory -
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7. When you re-modify the content of the article, you need to update your list, the method is: in the directory area, right click, select [Update Field] -
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8. Election [update domain], the box will appear on the map, select the second On OK. -
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Well, Word automatically generated using the general operation of the directory is as I described above, you learn it? -
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Subscribe to the reading room -
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