i have a asp.net mvc website which runs a number of queries for each page. Should i open up a single connection or open and close a connection on each query?
All,
I have a database table in mysql with a field that is of "TIMESTAMP" type. I need help writing the SQL query to update the field with the current timestamp.
UPDATE tb_Test set dt_modified = ?????
Thanks,
I have this linq query:
var segreterie = from s in db.USR_Utenti join h in db.USR_Accounts
on new {s.ID, settings.GruppoSegreteria}
equals new {h.USR_UtentiReference,h.ID_Gruppo} select s;
that has this problem:
The type of one of the expressions in the join clause is incorrect. Type inference failed in the call to 'Join'.
how can i do to solve it?
I always considered database as a storage .
but never thought it can be used for querying across tables etc.
Which is a good book for sql for a developer. not just the syntax.
How to write a query in different ways
How internally queries are executed.etc
especially related to microsoft sql server
i have passportno(varchar) in database.
i am entering values like this 001,002,003. and i want to display like sorting order.
now i wrote query like this "select * from passport_registration where status=1 ORDER BY passportno" then displaying output like this......077,088,099,100,1000,1001,1009,101,1010
i want to diplay sort order. how to do?
Hello, I'm using php for making queries for mysql. Here is one:
UPDATE `subscribers` SET `curDate` = NOW() WHERE `e_mail` = "$resEmail"
curDate - DateTime type. The problem is that after this query curDate of given email is
0000-00-00 00:00:00
What's wrong?
The line cmd.ExecuteNonQuery();
cmd.CommandText
CREATE TRIGGER subscription_trig_0 ON subscription AFTER INSERT AS UPDATE user_data SET msg_count=msg_count+1 FROM user_data
JOIN INSERTED ON user_data.id = INSERTED.recipient;
The exception:
Incorrect syntax near the keyword 'TRIGGER'.
Then using VS 2010, connected to the very same file (a mdf file) i run the query above and i get a success message. WTF!
What is the easiest and most efficient way to create an auto-increment counter for every data row in google appengine?
basically I want to give every row a unique row_number so that I can overcome the issue of only being able to get the first 1000 results in a select query. I can thus add a counter lies between condition and mine all the entires in the table.
How to fetch the first two rows from Mysql DB using Mysql PHP function? Is there any function which can give me first 2 or 3 rows from the select query we fired?
I have a simple query:
SELECT u_name AS user_name FROM users WHERE user_name = "john";
I get "Unknown Column 'user_name' in where clause". Can I not refer to 'user_name' in other parts of the statement even after select 'u_name as user_name'?
I would like to create a stored procedure that takes in a string of comma separated values like this "1,2,3,4", and break it apart and use those numbers to run a query on a different table.
so in the same stored procedure it would do something like
select somefield from sometable where somefield = 1
select somefield from sometable where somefield = 2
select somefield from sometable where somefield = 3
select somefield from sometable where somefield = 4
Thanks!
I have an app that reads and writes data from sqlite3. I tested it on the simulator it looks like everything is OK. But if the ad-hoc version does a 'delete' or 'insert' query in the sqlite3 file on iPhone, it crashes.
Is it possible to debug ad hoc versions of iPhone apps with XCode?
Here's my table with some sample data
a_id | b_id
------------
1 225
2 494
3 589
When I run this query
INSERT IGNORE INTO table_name (a_id, b_id) VALUES ('4', '230') ('2', '494')
It inserts both those rows when it's supposed to ignore the second value pair (2, 494)
No indexes defined, neither of those columns are primary.
What don't I know?
my tomcat server is showing error 500 exception. actually i am not able to get connected to the table created in the pg admin3 postgresql database to the project deployed in the server.
can u please tell me the method to modify query in the table created?
I have a table generated from some PHP code that lists a SMALL amount of important information for employees. I want to make it so each row, or at least one element in each row can be clicked on so the user will be redirected to ALL of the information (pulled from MySQL database) related to the employee who was clicked on. I am not sure how would be the best way to go about this, but I am open to suggestions. I would like to stick to PHP and/or JavaScript. Below is the code for my table:
<table>
<tr>
<td id="content_heading" width="25px">ID</td>
<td id="content_heading" width="150px">Last Name</td>
<td id="content_heading" width="150px">First Name</td>
<td id="content_heading" width="75px">SSN</td>
</tr>
<?php
$user = 'user';
$pass = 'pass';
$server = 'localhost';
$link = mysql_connect($server, $user, $pass);
if (!$link){
die('Could not connect to database!' . mysql_error());
}
mysql_select_db('mydb', $link);
$query = "SELECT * FROM employees";
$result = mysql_query($query);
mysql_close($link);
$num = mysql_num_rows($result);
for ($i = 0; $i < $num; $i++){
$row = mysql_fetch_array($result);
$class = (($i % 2) == 0) ? "table_odd_row" : "table_even_row";
echo "<tr class=".$class.">";
echo "<td>".$row[id]."</td>";
echo "<td>".$row[l_name]."</td>";
echo "<td>".$row[f_name]."</td>";
echo "<td>".$row[ssn]."</td>";
echo "</tr>";
}
?>
</table>
I have a table which has a bunch of columns but the two relevant ones are:
Due_Amount MONEY
Bounced_Due_Amount MONEY
I have a SQL query like the following
SELECT * FROM table WHERE (Due_Amount 0 OR Bounced_Due_Amount 0)
Would the best index to put on this table for SQL Server 2008 be an index which includes both columns in the index, or should I put an separate index on each column?
hello.
I am wondering if there is local version control/snapshots for emacs independent of VC?
let me clarify:
every time I save buffer, I would like to be able to keep track of changes of each save in session. I know I can do something similar with backup files, but they are not automated like VC and a somewhat cumbersome.
I have searched Google, but did not find the solution.
Perhaps my query string was not good.
Thanks
I have the following query
SELECT *
FROM attend
RIGHT OUTER JOIN noattend ON attend.date = noattend.date2
WHERE attend.date
BETWEEN '2010-02-01'
AND '2010-04-01'
AND attend.customerid =1
ORDER BY date DESC
LIMIT 0 , 30
Attend is the table with customerid
noattend is the table with a row for each date (date2) I followed the advice in other questions to right outer join it to create values where there is no record in attend but it still isn't filling in the empties
any help much appreciated
Hi guys, I've got this table
CREATE TABLE `subevents` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(150) DEFAULT NULL,
`content` text,
`class` tinyint(4) NOT NULL DEFAULT '1',
PRIMARY KEY (`id`)
) ENGINE=MyISAM
Each row can have a different value in the 'class' field.
I'd like to select any number of rows, ordered randomly, as long as the sum of the values in the 'class' field is equal to 100.
How could I accomplish it directly in the MySQL query without doing it later in PHP?
Thanks everybody!
is there an equivalent of oracle's rowid in mysql?
delete from my_table where rowid not in (select max(rowid) from my_table group by field1,field2)
I want to make a mysql equivalent of this query!!!
What i'm trying to do is, : The my_table has no primary key.. i'm trying to delete the duplicate values and impose a primary key (composite of field1, field2)..!!
Hi,
If a website operating on a domain other than my own supports get requests, like:
http://api.someothersite.com/v1/farms
There's no way for me to access it using JSON-P right, they would have to have support for it as a query parameter? Something like:
http://api.someothersite.com/v1/farms?callback=fantastic
I mean, there's no way for me to use it without them explicitly supporting it, right?
Thanks
I have a some of html strings that my application generates. Each html 'snippet' is stored as a collection of strings. I need to display some of these according to the user query. What is the usual way to display html stylized texts in Windows Forms.