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  • easy mysql query question

    - by Ahmet vardar
    Hi, here is the "msg" table on mysql sent_to customer msg read ------- -------- ------ ----- 45 3 bla 0 34 4 bla 1 34 6 bla 0 45 3 bla 0 56 7 bla 1 45 8 bla 0 for example user whose id number is 45 logs in, i want him to see this, you have 2 unread msg to your "number 3" customer you have 1 unread msg to your "number 8" customer like a news feed what query should i use for this ? thx

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  • how to activate trigger after all the bulk insert(s) in mysql

    - by JPro
    I am using mysql and there are bulk inserts that goes on to my table. My doubt is if I create a trigger specifying after insert, then the trigger will get activated for every insert after, which I do not want to happen. Is there any way to activate a trigger after all the bulk inserts are completed? Any advice? Thanks.

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  • How do you debug MySQL stored procedures?

    - by Cory House
    My current process for debugging stored procedures is very simple. I create a table called "debug" where I insert variable values from the stored procedure as it runs. This allows me to see the value of any variable at a given point in the script, but is this is there a better way to debug MySQL stored procedures?

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  • MS Access Import from Text File problems

    - by Gavin O'Brien
    I'm trying to import a text file into an access database. It's not one I've written myself but the spec for the delimited text file is set up properly and the file imports properly using the wizard. When I try to use the import functions of the app itself, the ImportError table tells "Field Truncation" for one of the fields. Any help would be appreciated.

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  • Please verify the trigger created below for delete is correct or not?

    - by Parth
    Please verify the trigger created below for delete is correct or not? Its for the insertion of every field of deleted row in audit table.. Please reply whether this trigger will work for me? delimiter // CREATE TRIGGER audit_menu BEFORE DELETE ON menu FOR EACH ROW BEGIN INSERT INTO audit (menuid, field, oldvalue, changedone) VALUES (OLD.menuid, 'name', OLD.name, UNIX_TIMESTAMP() ), (OLD.menuid, 'age', OLD.age, UNIX_TIMESTAMP() ), (OLD.menuid, 'address', OLD.address, UNIX_TIMESTAMP() ), (OLD.menuid, 'sex', OLD.sex, UNIX_TIMESTAMP() ), (OLD.menuid, 'town', OLD.town, UNIX_TIMESTAMP() ) END;// delimiter ;

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  • PHP Doctrine: filtering data which is already loaded?

    - by ropstah
    I'm new to Doctrine and ActiveRecord. How should I filter a table after it has been loaded? (i suppose this is preferred over sending multiple queries?) Is this 'good' or 'bad'? class UserTable extends Doctrine_Table { function filterByGroup($group) { $ut = new UserTable(); foreach($this as $u) { if($u->group = $group) $ut->add($u); } return $ut; } }

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  • Connecting FLEX 3.0, JAVA WITH MYSQL

    - by Nithi
    How to connect to MYSQL DB from Java, create table, insert data, retrieve it with datatypes. How to make use of the data to/from in Flex application. plz help me out.. i have basic knowledge in sending and receiving messages using BlazeDS. and calling JAVA METHODS USING ...

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  • adding month to EndDate as constraint in Oracle SQL

    - by user2900611
    I've a question regarding Oracle database SQL. my employee each have a project, the end date of the project depends on the no of months that was given to them base on PTerm. Am i right to do it this way? CREATE TABLE PROJECT ( P_ID VARCHAR ( 20 ) NOT NULL, PNAME VARCHAR ( 100 ) NOT NULL, PTERM VARCHAR ( 20 ), PSTARTDATE DATE, PENDDATE DATE, CONSTRAINT PROJECT_PKEY PRIMARY KEY ( P_ID ), CONSTRAINT PROJECT_PTERM CHECK ( PTERM IN ('1 MONTH', '2 MONTH', '3 MONTH') ), CONSTRAINT PROJECT_ENDDATE CHECK ( PENDDATE = (PSTARTDATE + PTERM) ) );

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  • How do I check the Database type in a Rails Migration?

    - by Shaun F
    I have the following migration and I want to be able to check if the current database related to the environment is a mysql database. If it's mysql then I want to execute the SQL that is specific to the database. How do I go about this? class AddUsersFb < ActiveRecord::Migration def self.up add_column :users, :fb_user_id, :integer add_column :users, :email_hash, :string #if mysql #execute("alter table users modify fb_user_id bigint") end def self.down remove_column :users, :fb_user_id remove_column :users, :email_hash end end

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  • Detect and remove noise text

    - by yox
    Given a database table with lots of data in it, what is the best practice to remove noise text? I want to detect and remove strings like: fghfghfghfg qsdqsdqsd rtyrtyrty I'm using Java.

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  • C++ STL vector iterator... but got runtime error

    - by nzer0
    I'm studying STL and made win32 project.. But I got stuck in runtime error.. I tried to debug it but.. please click to see picture this is very strange because in watch table, n1,p1,it are defined but n2 isn't and tmp is not either.. I can't find what is wrong... please help..

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  • how to make application singleton.

    - by Mohsan
    hi. i want to make sure that only one instance of application run... i added the mutex check but it causes problem in 64 bit system. the second way is to search process table.. This check can be easily defeated by renaming application. please tell me how to make sure that only one instance of application run.

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  • Declare java enum with a String array

    - by chama
    I'm trying to declare an enum type based on data that I'm retrieving from a database. I have a method that returns a string array of all the rows in the table that I want to make into an enumerated type. Is there any way to construct an enum with an array? This is what I tried, but from the way it looked in eclipse, it seemed like this just created a method by that name: public enum ConditionCodes{ Condition.getDescriptions(); } Thank you in advance!

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  • Efficient SQL to count an occurrence in the latest X rows

    - by pulegium
    For example I have: create table a (i int); Assume there are 10k rows. I want to count 0's in the last 20 rows. Something like: select count(*) from (select i from a limit 20) where i = 0; Is that possible to make it more efficient? Like a single SQL statement or something? PS. DB is SQLite3 if that matters at all...

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  • How much to put in a Repository class?

    - by chobo
    When using the repository pattern is it recommended to have one Repository class for each database table? Would I also map one service layer class to one repository class. I'm having a hard time trying to understand how much stuff one repository or service layer class should have. Thanks!

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  • how to copy from one column to another but with different format

    - by Bob
    I hv a table like this:- Item Model Remarks ----------------------------------------- A 10022009 B 10032006 C 05081997 I need to copy the info from "Model" to "Remarks" with the following format:- Item Model Remarks ----------------------------------------- A 10022009 20090210 B 10032006 20060310 C 05081997 19970805 Thanks

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