I have 2 processes: 1 is writing to a sqlite database, 1 is reading from the same database. Occasioally, I get SQLITE_BUSY on my selects. Is this normal? Is their some option or way I could open the database so that it blocks until it CAN complete the query? (I tried the FULLMUTEX option on the open call but it appeared to have no effect).
I want to create an MXML container component that has some of its own chrome -- a standard query display, et al -- and that supports the addition of child components to it. Something a lot like the existing mx:Panel class, which includes a title label, but acts like a plain mx:Box with regards to adding children.
What's the easiest way to do this?
Edit:
To be clear, I want to be able to extend the container using MXML, so the "Multiple visual children" problem is relevant.
I'm trying to write a little SQL Helper. I have a query like this stored in a string:
DECLARE @V1 INT
--ignore
DECLARE @V11 INT
DECLARE @V12 INT
--endignore
DECLARE @V2 INT
--ignore
SELECT * FROM SampleTable
INNER JOIN AnotherSampleTable
......
--endignore
SELECT * From Employee ORDER BY LastName
My helper method should cut everything what's between
--ignore
and
--endignore
The result string should look like:
DECLARE @V1 INT
DECLARE @V2 INT
SELECT * From Employee ORDER BY LastName
How can achieve my result with RegEx?
Is there a quick query I can run that returns all columns of the same name between two tables?
I have many pairs of tables that I know are tied together, but I'm not sure which of the 50 or so columns they have in common.
Are there any real resources for creating MySpace Profile Widget apps? I have looked through all the sample code the present and am unable to perform any simple tasks. I basically need to grab the current profile page URL or ID, and then pass this onto an AJAX query and return data from my server.
How do I do this?
DECLARE @STR_IDS VARCHAR(15)
SET @STR_IDS='7,15,18'
UPDATE TBL_USERS WHERE ID IN @STR_IDS
I know the update statement would not work as the ID is of type INT and i am replacing a varachar value there .How can i change the query so that it will be executed like this in effect ?
UPDATE TBL_USERS WHERE ID IN (7,15,18)
Thanks in advace
I'm trying to take a query:
SHOW TABLES;
which will display a bunch of tables with the chat_ prefix. I want to remove the chat_ prefix from the string, format the variable (with a link), and display it. How is this accomplished?
HI
One of my requirement is to have prefix on all the tables of the django based project (Because db is hosted on shared server). I have used db_table Meta option to set the prefix for the tables which I have created.
Now my query is how do I set the prefix for tables provided by django.contrib.
Instead of auth_group django should create prefix_auth_group.... How do I do that?
Thank you very much...
I have the cursor with the query statement as follows:
cursor.execute("select rowid from components where name = ?", (name,))
I want to check for the existence of the components: name and return to a python variable.
How do I do that?
I have one 'Transaction' entity object with 'Operations' navproperty with multiplicity of 'Many'.
When I'm adding only one operation per transaction nothing happens, but when I'm trying to add more than one operation,
db.SaveChanges() throws an exception like 'Subquery returned more than 1 value blah, blah, blah'
How can I solve that?
Help me guys please...
BTW... Could you tell me how can I see the exact query string that EF passes to Sql Server on db.SaveChanges() method?
Maybe not literally but the query below gets an error near user. If i change it to userZ it works. WHY can i not use that name? Is there a way to specific its a field instead of a keyword? (or whatever it is)
create table Post2 (
id INTEGER PRIMARY KEY NOT NULL,
title nvarchar(max)
NOT NULL,
body nvarchar(max)
NOT NULL,
user integer REFERENCES Post1(id));
Hi,
I am trying to make a dynamic form which retrives data. How can I use javascript to load a value from a mysql database?
I understand that it must use php in some way, and I know how to query the database and assign the value to a php variable, but I have no idea what to do after that...any advice?
the goal is to have someone enter their orderid say, then the datbase auto pulls down and enters their last invoice in the field below it after they click GO...
I want to find top rated item using AVG function in mysql, right now my query looks like this:
SELECT a.title, AVG(d.rating) as rating FROM in8ku_content a
JOIN in8ku_content_ratings d ON a.id = d.article_id
ORDER BY rating DESC
Problem is that it takes AVG of all items and the result is not accurate, what should be changed here to get correct result ?
Tables:
in8ku_content [id, title] in8ku_content_ratings [id, article_id, rating]
consider a tale is as follows,
EmployeeId | Name | Phone_Number
Now, i insert 10 records... When i query them back, select * from myTable they are not selected in the order i inserted. I can obviously keep an autoincrement index and ORDER BY index. But i dont want to alter the table. How can i do this without altering the table?
Is it possible to have a static collection as a member of a hibernate entity?
Say I have an object Question:
public class Question {
private String category;
...
}
Would it be possible to populate a static Set<String> that is a distinct set of all categories in the Database? I know I could just query this, but I was wondering if there was a more elegant solution, as it seems like something that other people may have come across.
This simple query throws the "Ambiguous column name TaskID" error on one db-server only. This is ridiculous. We tested this with the same database structure on different servers and different versions of ms sql (2005/2008), and it's only THIS particular client's server that throws the error. I'm actually frustrated.
SELECT Tasks.TaskID
FROM Tasks
INNER JOIN TaskHelpers ON TaskHelpers.TaskID = Tasks.TaskID
order by TaskID
Yes, I know I can put "Tasks.TaskID" into the order by clause, but for some reasons I can't.
I want to convert my Resultset to List in my JSP page. and want to display all the values. This is my query:
SELECT userId, userName
FROM user;
I have executed that using preparedstatement and got the Resultset. But how to convert it as a List and want to display the result like this:
userID userName
------------------
1001 user-X
1006 user-Y
1007 user-Z
Say I have a dataframe df with two or more columns, is there an easy way to use unique() or other R function to create a subset of unique combinations of two or more columns?
I know I can use sqldf() and write an easy "SELECT DISTINCT var1, var2, ... varN" query, but I am looking for an R way of doing this.
It occurred to me to try ftable coerced to a dataframe and use the field names, but I also get the cross tabulations of combinations that don't exist in the dataset:
uniques <-
as.data.frame(ftable(df$var1,
df$var2))
My Scenario is...
I want to find out whether the table has an identity column or not.Table is unknown to me.I have not done the structure of the table.using Query?
Im using Sql Compact.
Hello,
I'm trying to copy the contents of one table into another in Postgres, however it appears some rows aren't being copied correctly:
ActiveRecord::StatementInvalid:
PGError: ERROR: column "email_date" is
of type timestamp without time zone
but expression is of type character
varying HINT: You will need to rewrite
or cast the expression.
Is there any way I can have it automatically skip (or ignore) invalid rows?
Here's the query I'm using:
SET statement_timeout = 0; INSERT INTO emails3 SELECT * FROM emails
You know how if you type links: "yourwebsite.com" into the normal google search box, it tells you the number of sites linking to you and their addresses.
How can I do it programmatically with php? Does google provide an api that can I can programmatically query? What are my options?
Hi,
I have just started to learn about the pros of foreign keys in database design (mySQL / innoDB) and I wonder if there's any way to temporarily bypass the foreign key when doing a specific delete query, to just delete in the parent table, and not from the linked child tables.
Thanks