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Using the AND operating with an SQL COUNT() query

Is it possible to use the AND operator in an SQL COUNT() query? For example: SELECT COUNT(field1) AS count FROM table WHERE field1=\'value1\' AND field2=value2\'[详细]

2023-04-03 11:37 分类：问答
mysql update with join and count

i have got a problem with thi开发者_StackOverflows query. update table1 as a left join( select count(*) as \'rec\' from table2 group by isin having rec<100 )[详细]

2023-04-03 10:27 分类：问答
Query output differs from the expected output

Below query is doing what I need: SELECT assign.from_uid, assign.aid, assign.message, curriculum.asset,[详细]

2023-04-03 09:27 分类：问答
In Jquery AND Rails, how to get visible character count of a string?

Let\'s say you have a string with embedded links and tags like so: This string has <a href=\"http://www.google.com\">some links</a> inside it.[详细]

2023-04-03 09:05 分类：问答
SQL counting rows having different values

I have a table with values (field valore): CREATE TABLE values ( questionario_id INT(10) UNSIGNED NOT NULL,[详细]

2023-04-03 05:01 分类：问答
Show UIAlertView if UITableView is empty

I have RSS, and the UITableView loads data from it, how can I show UIAlertView if the UITableView is empty, but not by count of an array because the array is different every time it is refreshed, is t[详细]

2023-04-02 13:00 分类：问答
What's wrong with this simple query?

I did a very simple query yesterday but this morning I couldn\'t remember how I did it, and whatever I tried doesn\'t work.[详细]

2023-04-02 12:30 分类：问答
Prolog - Count the number of leaves in a tree

If I have a tree that for example looks like this: tree3(b(l(1),b(l(2),l(3)))). How would I write a program that counts the number of leaves?[详细]

2023-04-02 09:45 分类：问答
How to get row count in mySql database

+-------------------+---------------------+------+-----+---------+----------------+ RowId| MSGID| Received| UID | Default ||[详细]

2023-04-02 08:44 分类：问答
Count only unique terms based on inner SELECT JOIN

I\'m trying to count only unique terms as a TOTAL count. This is the original query and it works fine[详细]

2023-04-02 05:25 分类：问答