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  • MySql TEXT column?

    - by acidzombie24
    I ran this using MySql and it appears to not like TEXT. With SQL server i use nvarchar(max) What should i use in MySQL? In other tables some fields will be descriptions and may be long so ATM i am thinking fixed length is bad. create table if not exists misc_info ( id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL, key TEXT UNIQUE NOT NULL, value TEXT NOT NULL)ENGINE=INNODB;

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  • Help with sql query

    - by user225269
    I have two tables: subject and student. I'm trying to count the number of subjects enrolled by each student. How do I do that?I'm trying the code below but it doesn't give the answer I need. Please help. SELECT COUNT( subject.SUBJECT ) , student.IDNO, student.FIRSTNAME, subject.SUBJECT FROM student, subject GROUP BY subject.SUBJECT LIMIT 0 , 30

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  • dbo in SqlServer

    - by ala
    I'm converting database from Teradata to SqlServer. I've noticed all tables and procedures are named by the prefix "dbo." (e.g. "dbo.Table1"). I would like to know if and how I can get rid of "dbo" because it would make the conversion task a lot more easier.

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  • Database with great read performance

    - by mscava
    I have 10 tables from which 4 contain each up to million rows. All values are inserted at once, and afterwards I only read the data many times. I am searching for a database that would perform greatly when it comes to selecting, joining or other reading etc. What is the most recommended option?

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  • how can I check data has been inserted successfully

    - by Piyush
    I have two insert statements.Second one will be executed only after successful execution of First one.What I wd like to do is- $sqlone="Insert into ....."; $sqltwo="Insert into....."; If(mysql_query($sqlone)) { If(mysql_query($sqltwo)) { show message Data inserted in both tables. } }

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  • Item of one combobox should not come into the other

    - by syedsaleemss
    Im using c# .net windows form application. I have a database with some tables.I have two comboboxes (A & B). I have populated a combo box A with column names of a table using sys.columns. Now when i select an item in combo box A ,combo box B should be populated with the same items except the selected item which was selected in combobox A .

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  • Using Joins vs Entity associations

    - by shivesh
    I am learning Entity framework and linq-to-entities. It's possible to get cross values from multiple tables using JOINS (join keyword) or using the navigation fields ( associations) in which case the framework knows how to reference the cross data. My question is what to use when?

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  • MYSQL UPDATE with IN and Subquery

    - by Johal
    Hi i have tables like this : table entry : id | total_comments ___________ 1 | 0 2 | 0 3 | 0 4 | 0 table comments : id | eid | comment ___________ 1 | 1 | comment sdfd 2 | 1 | testing testing 3 | 1 | comment text 4 | 2 | dummy comment 5 | 2 | sample comment 6 | 1 | fg fgh dfh Query i write : UPDATE entry SET total_comments = total_comments + 1 WHERE id IN ( SELECT eid FROM comments WHERE id IN (1,2,3,4,5,6)) Results i get is : table entry : id | total_comments ___________ 1 | 1 2 | 1 3 | 0 4 | 0 Expected results : table entry : id | total_comments ___________ 1 | 4 2 | 2 3 | 0 4 | 0 Any help will be appreciated.

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  • How do I remove separation between rows in a HTML table?

    - by Roman
    I have a html table with 3 rows and 1 column. In the top and button row I have images and in the middle row I have div. Between my rows I see a separation (I see background of my page). I tried to set all padding and margins to zero (for tables, div and images) and I still have this separation. Can anybody, please, help me to solve this problem. The page is here:

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  • The least amount of code possible for this MySQL query?

    - by ddan
    I have a MySQL query that: gets data from three tables linked by unique id's. counts the number of games played in each category, from each user and counts the number of games each user has played that fall under the "fps" category It seems to me that this code could be a lot smaller. How would I go about making this query smaller. http://sqlfiddle.com/#!2/6d211/1 Any help is appreciated even if you just give me links to check out.

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  • How could i send a html5 sqlite database from an iphone ?

    - by Edoc
    Hi everybody, i'm developing a webapp for iphone/ipod and using the client's side database. I want my webapp to work mainly offline and allow users to fill the database and at a certain point i'd like to send my database to a server to process and store all the informations. The problem is i can't find a proper way to send my tables to a server in order to fill its database with the one sent from the iphone. Does anyone has a clue ?

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  • MVC architecture EJB funcionallity

    - by Ignacio
    HI would like to understand how do ejbs work in an MVC architecture, what i do not get is: When the web app starts, the system creates an ejb for each record in every table of db or an ejb with all the records of all tables? Thank you very much

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  • Solution for this SQL query?

    - by homeWorkBoy
    Suppose you have these tables: Table Name: Salesman Fields: S_ID(Primary Key), Name Table Name: Region_1 Fields: Reg_ID(Primary Key), S_ID(Foreign Key), sales Table Name: Region_2 Fields: Reg_ID(Primary Key), S_ID(Foreign Key), sales Table Name: Region_3 Fields: Reg_ID(Primary Key), S_ID(Foreign Key), sales Table Name: Region_4 Fields: Reg_ID(Primary Key), S_ID(Foreign Key), sales Query 1: Find out total of sales of each salesman in all the regions. Query 2: Find out total of sales of a particual salesman in all the regions. (if the first one is solved I think this will be easy. :-) )

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  • Setting MySQL column names

    - by Richard Mar.
    Say I have these tables: people(id, name), cars(person_id, car) and this query: SELECT c.car FROM people as p, cars as c WHERE c.person_id = p.id AND p.id = 3 I want the c.car column to take its name from the name field in the people table, like this (invalid SQL, just to illustrate): SELECT c.car AS(SELECT name FROM people WHERE id = 3) How do I do that?

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  • MySQL: List rows who have one but not another many-to-many relationship

    - by Svish
    Not quite sure how to ask or define this, but can't figure it out. I have three tables like this: persons person_id, first_name, last_name hobbies hobby_id, name persons_hobbies person_id, hobby_id I need to make two lists. Persons that have both hobby A and B, and persons that have hobby A but not B. How can I write these two queries? Can't figure out how to do this with joining and all...

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  • TSql Lookup function

    - by OldMan
    I have a bunch of dimension tables that have unique ID and Name fields. I need a T-SQL function that returns an ID when passed a table name and a value for the name field. I'm guessing the query would build a little query then execute it? Performance isn't an issue since this is a one time ETL thing.

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  • How do I use ST_Contains in following case?

    - by Z77
    I have two tables. First with points, and second with polygons. I need to find out which points are in required polygon according to the attribute gid. Using query: SELECT table1.* FROM table1, table2 WHERE table2.gid=1 AND ST_Contains(table2.geom2, table1.geom1); What I get is empty table (only columns without data)... Tnx

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  • How to retrieve items from a database c#

    - by Poppy
    I have 3 tables "pics", "shows", "showpics" I want to be able to edit the table "shows". In order to do this i need to retrive the pictures that the show contains (the pictures are stored in the table "pics") the "showpics" table acts as a link does anyone have any ideas as im completely lost and have no idea where to even start Thanks

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  • Concatenate multi value into one record.

    - by mikehjun
    I joined two tables together and what I like to do is concatenate multi vaule in one records without duplicated value. TAXLOT_ZONE TID ZONE 1 A 1 A 1 B 1 C 2 D 2 D 2 E 3 A 3 B 4 C 5 D Desirable Final table looks like; TID ZONE 1 A, B, C 2 D, E 3 A, B 4 C 5 D

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  • Is this a good database design?

    - by alokpatil
    I am planning to make a railway reservation project... I am maintaining following tables: trainTable (trainId,trainName,trainFrom,trainTo,trainDate,trainNoOfBoogies)...PK(trainId) Boogie (trainId,boogieId,boogieName,boogieNoOfseats)...CompositeKey(trainId,boogieId)... Seats (trainId,boogieId,seatId,seatStatus,seatType)...CompositeKey(trainId,boogieId,seatId)... user (userId,name...personal details) userBooking (userId,trainId,boogieId,seatId)... Is this good design?

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