Counting occurrences of a custom field

Hi, Neal,

I'd like to recommend you to use MT's original tag, to display numbers of all published entries.

http://www.movabletype.org/documentation/appendices/tags/blogentrycount.html

You can use "include_blogs" modifier to indicate including blogs.

For example, there are two blogs and their blog's id is 2 and 3 each, then you can get the numbers of all published entries

<mt:BlogEntryCount include_blogs="all">

or

<mt:BlogEntryCount include_blogs="2,3>

More usage information is available at Japanese MT document.
http://www.movabletype.jp/documentation/appendices/tags/blogentrycount.html

Besides that, entry's custom-field data is ordinary placed to "mt_entry_meta" table. So please check this table with your sql client software, such as phpMyAdmin.

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MTJ
Information of MovableType and MTOS from Japan

http://www.mt-j.info
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You can do this with standard template tags, setting and retrieving some variables, and using available modifiers/operators to do a little math and formatting. I've used the more specific <mt:EntriesCount> tag to find the number of entries of each type (returning the number of entries in the context of the <mt:Entries> listings.

This example assumes that the basenames for your custom fields are "field_a" and "field_b" - just change the <mt:Entries> tags if they are not. It also assumes you have less than 9999 of each type of entry.

For each entry type, create the context for each, and count how many entries:

<mt:Entries field:field_a="1" limit="9999">
<mt:EntriesCount setvar="a_entries">
</mt:Entries>

<mt:Entries field:field_b="1" limit="9999">
<mt:EntriesCount setvar="b_entries">
</mt:Entries>

Set a variable for the number of entries in the entire blog:

<mt:BlogEntryCount setvar="all_entries">
<mt:Var name="all_entries"><br  />

Number of A entries (retrieving the variable set earlier):

<mt:Var name="a_entries"><br />

Number of B entries:

<mt:Var name="b_entries"><br />

Do some math, and work out what fraction of the A is of the total entries (using the variable set earlier), and then multiplying by 100 to get a percentage, and then finally formatting to 2 decimal places.

<mt:Var name="a_entries" op="/" value="$all_entries" setvar="a_entries"> 
<mt:Var name="a_entries" op="*" value="100" setvar="a_entries">
<mt:Var name="a_entries" sprintf="%.02f"> % (to 2 decimal places)
<br />

And the same for B entries:

<mt:Var name="b_entries" op="/" value="$all_entries" setvar="b_entries"> 
<mt:Var name="b_entries" op="*" value="100" setvar="b_entries">
<mt:Var name="b_entries" sprintf="%.02f"> % (to 2 decimal places)