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  • How do i escape reserve names in a column? MySQL/Create Table

    - by acidzombie24
    I am generating tables from classes in .NET and one problem is a class may have a field name key which is a reserved mysql keyword. How do i escape it in a create table statement? (Note: The other problem below is text must be a fixed size to be indexed/unique) 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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  • 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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  • Sqlite3 INSERT INTO Question × 377

    - by user316717
    Hi, My 1st post. I am creating an exercise app that will record the weight used and the number of "reps" the user did in 4 "Sets" per day over a period of 7 days so the user may view their progress. I have built the database table named FIELDS with 2 columns ROW and FIELD_DATA and I can use the code below to load the data into the db. But the code has a sql statement that says, INSERT OR REPLACE INTO FIELDS (ROW, FIELD_DATA)VALUES (%d, '%@'); When I change the statment to: INSERT INTO FIELDS (ROW, FIELD_DATA)VALUES (%d, '%@'); Nothing happens. That is no data is recorded in the db. Below is the code: #define kFilname @"StData.sqlite3" - (NSString *)dataFilePath { NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; return [documentsDirectory stringByAppendingPathComponent:kFilname]; } -(IBAction)saveData:(id)sender; { for (int i = 1; i <= 8; i++) { NSString *fieldName = [[NSString alloc]initWithFormat:@"field%d", i]; UITextField *field = [self valueForKey:fieldName]; [fieldName release]; NSString *insert = [[NSString alloc] initWithFormat: @"INSERT OR REPLACE INTO FIELDS (ROW, FIELD_DATA) VALUES (%d, '%@');",i, field.text]; // sqlite3_stmt *stmt; char *errorMsg; if (sqlite3_exec (database, [insert UTF8String], NULL, NULL, &errorMsg) != SQLITE_OK) { // NSAssert1(0, @"Error updating table: %s", errorMsg); sqlite3_free(errorMsg); } } sqlite3_close(database); } So how do I modify the code to do what I want? It seemed like a simple sql statement change at first but obviously there must be more. I am new to Objective-C and iPhone programming. I am not new to using sql statements as I have been creating web apps in ASP for a number of years. Any help will be greatly appreciated, this is driving me nuts! Thanks in advance Dave

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  • Normalize database or not? Read only MyISAM table, performance is the main priority (MySQL)

    - by hello
    I'm importing data to a future database that will have one, static MyISAM table (will only be read from). I chose MyISAM because as far as I understand it's faster for my requirements (I'm not very experienced with MySQL / SQL at all). That table will have various columns such as ID, Name, Gender, Phone, Status... and Country, City, Street columns. Now the question is, should I create tables (e.g Country: Country_ID, Country_Name) for the last 3 columns and refer to them in the main table by ID (normalize...[?]), or just store them as VARCHAR in the main table (having duplicates, obviously)? My primary concern is speed - since the table won't be written into, data integrity is not a priority. The only actions will be selecting a specific row or searching for rows that much a certain criteria. Would searching by the Country, City and/or Street columns (and possibly other columns in the same search) be faster if I simply use VARCHAR?

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  • mySQL: How many rows in a table before performance is affected?

    - by Industrial
    Hi everybody, Is there a "known limit" for columns & rows in a mySQL table that when passed, it can be safe to say that performance is severely affected? I've think that I had heard that there is a "golden number" that you really dont want to exceed in either columns or rows in a table. - Or is it all about the size of the index and available RAM + CPU on the server? Thanks!

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  • Will MySQL full-text-search return the results I need?

    - by mike
    I have a keyword field with a list of 5 keywords for each item. example below: 2008, Honda, Accord, Used, Car Will MySQL full text return the item above for the following search requests? 2008 Honda Accord Honda Accord Used Car If so, how well will this hold up when searching through fifty thousand plus records?

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  • Wait 30 seconds in order to allow a new action on PHP and MySQL ???

    - by DomingoSL
    Hello, in my web page a user fill a form who send information to a MySql database. One of the data inputs sent is a date/time, in the format date('l jS \of F Y h:i:s A'); (I can change the format as needed) So when the user submits the form i wanna check if the actual time/date is 30 seconds more than the sent time/date in order to allow or not the submission of the form. Thanks!

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  • Create trigger for auto incerment id and default unix datetime

    - by user1804985
    Any one help me to create a trigger for auto increment fld_id and Unix datetime. My table field is fld_id(int),fld_date(number),fld_value(varchar2). My insert query is insert into table (fld_value)values('xxx'); insert into table (fld_value)values('yyy'); I need the table record like this fld_id fld_date fld_value 1 1354357476 xxx 2 1354357478 yyy Please help me to create this.I can't able to do this..

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  • Given a Date "03/13/2010", using that in a MYSQL Where Clause?

    - by nobosh
    I would like to pass a MYSQL query via Coldfusion the following date: 03/13/2010 So the query filters against it like so: SELECT * FROM myTable WHERE dateAdded before or on 03/13/2010 I'd also like to be able to take 2 dates as ranges, from: 01/11/2000, to: 03/13/2010 SELECT * FROMT myTable WHERE dateAdded is ON or Between 01/11/2000 through 03/13/2010 thanks

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  • Insert blank row on two conditions

    - by lost_my_wallet_in_el_segundo
    I have a spreadsheet with a large number of rows. There are two rows grouped together (for each customer). In column A, the first row has an account number. The second row should be blank. The spreadsheet has lots of customers listed where there is no second row. I need to insert a blank line to create a second row for each customer that doesn't have one. Here is the VBA script I cobbled together, but it gets a syntax error. Sub Macro1() ' ' Macro1 Macro ' For myrow = 1 To Cells.Find("*", SearchOrder:=xlByRows, SearchDirection:=xlPrevious).Row If Cells(myrow, 1) <> "" and Cells(myrow+1, 1) <> "" Then Selection.Insert Shift:=xlDown, CopyOrigin:=xlFormatFromLeftOrAbove End Sub

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  • Java / MySQL - How to access connection from another class?

    - by Alex
    I'm just getting my head around java (and OOP for that matter), the only thing I am familiar with is MySQL. I need to keep the DB connection open throughout the duration of the application, as well as a server socket. I'm not even sure if they both need separate classes, but here's what I have so far: http://pastebin.com/qzMFFTrY (it wouldn't all go in a code tag) The variable I need is con for line 86.

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  • Treeview insert property problem

    - by curiosity
    TreeNode[] nodes = this.treeview.Nodes.Find(node.Text, true); if (nodes.Length > 0) { int i = nodes[0].Index; if (nodes.Length > 0) this.treeview.Nodes.Remove(nodes[0]); this.treeview.Nodes.Insert(i, nodes[0]); } i tried this code, but the node nodes[0] is not inserting into the particular index. instead it is adding at the last. but yes i use treeviewsorter. Any idea how to insert node without using insert or using insert effectively with treeviewsorter??

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