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• The table '#sql-5f8_9c' is full

  - by gansodesoya

  hello, im trying to delete a foreign key with the following syntax (5.0.45-community-nt): alter table [table] drop foreign key [fk_name] but I'm getting the folling error: The table '#sql-5f8_9c' is full – 99543 ms any ideas? thanks!

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• How much slower are prepared statements for single queries?

  - by omgkurtnilsen

  If prepared statements are used to only insert a single row. How much slower would it be compared to not using prepared statements?

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• mysql_fetch_assoc() expects parameter 1 to be resource, boolean given in

  - by user2533440

  I cannot figure out whats wrong with this code. Every time i try to run this file I get error mysql_fetch_assoc() expects parameter 1 to be resource <?php $q = "select * from tbfood"; $rs = mysql_query($q); while($msg = mysql_fetch_assoc($rs)){ echo "<p>".$msg["name"]."</p>"; echo "<p>".$msg["price"]."</p>"; if ($msg['idDruh'] == 1) { echo "string1"; } elseif ($msg['idDruh'] == 2) { echo "string2"; } elseif ($msg['idDruh'] == 3) { echo "string3"; } elseif ($msg['idDruh'] == 4) { echo "string4"; } elseif ($msg['idDruh'] == 5) { echo "string5"; } elseif ($msg['idDruh'] == 6) { echo "string6"; } elseif ($msg['idDruh'] == 7) { echo "string7"; } } ?>

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• Executing multiple update statements in PHP

  - by theband

  I have three update statements to be executed in PHP, i am getting the values of all these as return parameters. How to execute each statement independely and finally show the end user the result that it has been successfully updated. <?php public function name($parameter1,$parameter2.... $parametern) { $records=array(); $sql=""; $sql2=""; $sql3=""; $result=mysql_query($sql); //return $result; if(!$result){throw new Exception(mysql_error());} if(mysql_num_rows($result)==0){return $records;} while($row=mysql_fetch_assoc($result)){$records[]=$row;} return $records; } ?> Then how finally we can get the result in my row object.

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• Strange SQL problem selecting multiple values for same column

  - by Nubber

  Hello there, Been at this for a few hours now and I can't make any sense of it. I've used this way of selecting multiple values for same column a few times, but there is something weird with this one. SELECT * FROM employee as s INNER JOIN works AS w1 ON w1.name = s.name INNER JOIN employee AS w2 ON w2.name = s.name INNER JOIN employee AS w3 ON w3.name = s.name WHERE w2.city = 'Washington' Basically what I want to do is find all companies which have people in all the cities. The company name is under 'works'. The problem is however that if I have the WHERE w2.city='Washington' it will make ALL the cities match Washington when it should only touch w2 and leave w3 alone so I could match it with another value. Anyone know why its doing this? Or know a better way to do it. Thank you very much in advance.

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• How can I remove duplicate numbers containing text?

  - by FlexSharp

  I have a table that looks like this: |StreetName NR| NR | |Teststreet 34| 34 | How can i delete only the number in Streetname when it is the same in NR??

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• How do I delete every row except the last one for each day?

  - by A B

  I have a table with stock quotes that looks something like this: id, date, stock_id, value Every day has several rows for each stock_id (it is automatically updated every five minutes), so the table is rather big at the moment. How do i delete every row but the last one each day for every stock_id?

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• SQL query doesn't get inserted

  - by Deejdd

  I've been trying to get my query to work for some time it runs but doesn't insert anything nor does it return any errors. The database connection is open and is successfuly connection. The Table is called errorlog and holds the following data - id (int autoincremental, Primary key, Unique) - exception (varchar) - time (DateTime) exception = String(error message) time = DateTime.Now Here's the code: public void insertError(string error, DateTime time) { SqlCeParameter[] sqlParams = new SqlCeParameter[] { new SqlCeParameter("@exception", error), new SqlCeParameter("@time", time) }; try { cmd = new SqlCeCommand(); cmd.Connection = connection; cmd.CommandType = CommandType.Text; cmd.CommandText = "INSERT INTO errorlog (exception, time) VALUES(@exception, @time)"; cmd.Parameters.AddRange(sqlParams); cmd.ExecuteNonQuery(); } catch (Exception e) { Console.WriteLine(e.Message); } } Any help would be appreciated, Thanks in advance. EDIT Removed quotes around @exception Heres the connection: protected DataController() { try { string appPath = System.IO.Path.GetDirectoryName(Assembly.GetAssembly(typeof(DataController)).CodeBase).Replace(@"file:\", "") + @"\"; string strCon = @"Data Source = " + appPath + @"Data\EasyShop.sdf"; connection = new SqlCeConnection(strCon); } catch (Exception e) { } connection.Open(); } Finally the way it gets called: public bool log(string msg, bool timestamp = true) { DataController dc = DataController.Instance(); dc.insertError(msg, DateTime.Today); return true; }

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• Selecting count(*) while checking for a value in the results

  - by Rob

  SELECT COUNT(*) as Count, IF(sch.HomeTeamID = 34,true,false) AS Hawaii FROM schedule sch JOIN schools s ON s.ID = 83 WHERE (sch.HomeTeamID = 83 OR sch.AwayTeamID = 83) AND sch.SeasonID = 4 I'm trying to use count() to simplify my result but also include a field that represents wether any of the results' specific column contained a certain value. Is this possible? I'd basically like a row response with all the info I need.

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• custom function is not getting called

  - by nectar

  here my code - $child1 = create_childid()."01"; $sqltree = "INSERT INTO tbltree (`userId`, `level`, `superId`, `rootId`, `childcount`) VALUES ('$child1', '1', '$newid', '$myroot', '0');"; mysql_query($sqltree); echo $newid; update_level(); $child2 = create_childid()."02"; $sqltree = "INSERT INTO tbltree (`userId`, `level`, `superId`, `rootId`, `childcount`) VALUES ('$child2', '1', '$newid', '$myroot', '0');"; mysql_query($sqltree); update_level(); $child3 = create_childid()."03"; $sqltree = "INSERT INTO tbltree (`userId`, `level`, `superId`, `rootId`, `childcount`) VALUES ('$child3', '1', '$newid', '$myroot', '0');"; mysql_query($sqltree); update_level(); $child4 = create_childid()."04"; $sqltree = "INSERT INTO tbltree (`userId`, `level`, `superId`, `rootId`, `childcount`) VALUES ('$child4', '1', '$newid', '$myroot', '0');"; mysql_query($sqltree); update_level(); $child5 = create_childid()."05"; $sqltree = "INSERT INTO tbltree (`userId`, `level`, `superId`, `rootId`, `childcount`) VALUES ('$child5', '1', '$newid', '$myroot', '0');"; mysql_query($sqltree); update_level(); ERROR : update_level(); is executing only once why??

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• Complex SELECT statement; one-to-many all details in one row

  - by RubyWedge

  There are two tables: Products ID (Primary Key), ProductName PlannedByMonths ProductID (Primary Key) (Link to the Products table many-to-one), MonthNumber (Primary Key), QtytoProduce, How to write SELECT statement to retrieve results in the following format? ProductName, QtytoProduceMonth1, QtytoProduceMonth2, QtytoProduceMonth3, QtytoProduceMonth4, QtytoProduceMonth5, QtytoProduceMonth6, QtytoProduceMonth7, QtytoProduceMonth8, QtytoProduceMonth9, QtytoProduceMonth10, QtytoProduceMonth11, QtytoProduceMonth12 Thank you.

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• Incorrect usage of UPDATE and ORDER BY

  - by nico55555

  I have written some code to update certain rows of a table with a decreasing sequence of numbers. To select the correct rows I have to JOIN two tables. The last row in the table needs to have a value of 0, the second last -1 and so on. To achieve this I use ORDER BY DESC. Unfortunately my code brings up the following error: Incorrect usage of UPDATE and ORDER BY My reading suggests that I can't use UPDATE, JOIN and ORDER BY together. I've read that maybe subqueries might help? I don't really have any idea how to change my code to do this. Perhaps someone could post a modified version that will work? while($row = mysql_fetch_array( $result )) { $products_id = $row['products_id']; $products_stock_attributes = $row['products_stock_attributes']; mysql_query("SET @i = 0"); $result2 = mysql_query("UPDATE orders_products op, orders ord SET op.stock_when_purchased = (@i:=(@i - op.products_quantity)) WHERE op.orders_id = ord.orders_id AND op.products_id = '$products_id' AND op.products_stock_attributes = '$products_stock_attributes' AND op.stock_when_purchased < 0 AND ord.orders_status = 2 ORDER BY orders_products_id DESC") or die(mysql_error()); }

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• How To Get YEARWEEK() To See Sunday As The Start Of The Week?

  - by tan

  I'm trying to get the YEARWEEK function to see Sunday as the 1st day of the week. An example date is: Sunday 1st Mar 2009 Here is my sql SELECT YEARWEEK('2009-03-01') and the result is - 200909 Which is week 9. I believe it is telling me this is week 9 because it sees the sunday as the last day of the previous week. How would I get this function to see sunday as the 1st day of the week and therefore return as week 10?

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• How do I add a varible to column2 when column1 is a specific value (sql-server)

  - by user367613

  How can I do a search for value A in column1 and add a value B in column2? In other words for every record that column1 has the value A I want to make the value in column2 = B (Currently column2 is empty) Would this work? UPDATE MyTable SET Column2 = REPLACE(Column2,NULL,'B') WHERE Column1 = "A"

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• SQL - Query to display average as either "longer than" or "shorter than"

  - by user1840801

  Here are the tables I've created: CREATE TABLE Plane_new (Pnum char(3), Feature varchar2(20), Ptype varchar2(15), primary key (Pnum)); CREATE TABLE Employee_new (eid char(3), ename varchar(10), salary number(7,2), mid char(3), PRIMARY KEY (eid), FOREIGN KEY (mid) REFERENCES Employee_new); CREATE TABLE Pilot_new (eid char(3), Licence char(9), primary key (eid), foreign key (eid) references Employee_new on delete cascade); CREATE TABLE FlightI_new (Fnum char(4), Fdate date, Duration number(2), Pid char(3), Pnum char(3), primary key (Fnum), foreign key (Pid) references Pilot_new (eid), foreign key (Pnum) references Plane_new); And here is the query I must complete: For each flight, display its number, the name of the pilot who implemented the flight and the words ‘Longer than average’ if the flight duration was longer than average or the words ‘Shorter than average’ if the flight duration was shorter than or equal to the average. For the column holding the words ‘Longer than average’ or ‘Shorter than average’ make a header Length. Here is what I've come up with - with no luck! SELECT F.Fnum, E.ename, CASE Length WHEN F.Duration>(SELECT AVG(F.Duration) FROM FlightI_new F) THEN "Longer than average" WHEN F.Duration<=(SELECT AVG(F.Duration) FROM FlightI_new F) THEN 'Shorter than average' END FROM FlightI_new F LEFT OUTER JOIN Employee_new E ON F.Pid=E.eid GROUP BY F.Fnum, E.ename; Where am I going wrong?

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• How to get Top 5 records in SqLite ?

  - by Amitabh

  I have tried this which did not work. select top 5 * from [Table_Name]

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• mysql_affected_rows() always returns 1 even though no row was updated.

  - by happyhardik

  What I am trying to do is: (programmatically) Update status where id is something, if no rows where updated, give error: we cannot find the record with id something, otherwise give message success. Here I am using mysql_affected_rows() to know if a row was updated or not, but it always return 1, so the user gets a success message, even though there was no row updated. Can anyone tell me what could it be?

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• Dont know how to select a few records from a table as utf8

  - by kwokwai

  Hi all, I don't have phpMyAdmin installed in my web site. Sometimes I was doing some select SQL command at the backend, but when I typed in this command to show all records from table Users: select * from Users; The records were printed as ???? | ??? ??? ??? |. I don't want to make any permanent changes to the charset in the database, so, how is it possible to temporarily displayed a few records as utf8 when needed?

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• Prioritize SQL WHERE clause

  - by JaTochNietDan

  Basically I want to do this: SELECT * FROM `table` WHERE x = 'hello' OR x = 'bye' LIMIT 1'; I want it to return 1 value, but to prioritize results from the 1st where clause. So if there exists a row where column x's value is "hello", it will not return the result from the 'bye' value. If the "hello" value doesn't exist though, it will return the result from the 'bye' value. Can't figure out a way to do it even though it seems fairly trivial. Any ideas?

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• Allow users to pull temporary data then delete table data (headers remain)?

  - by JM4

  I don't know the best way to title this question but am trying to accomplish the following goal: When a client logs into their profile, they are presented with a link to download data from an existing database in CSV format. The process works, however, I would like for this data to be 'fresh' each time they click the link so my plan was - once a user has clicked the link and downloaded the CSV file, the database table would 'erase' all of its data and start fresh (be empty) until the next set of data populated it. My EXISTING CSV creation code: <?php $host = 'localhost'; $user = 'username'; $pass = 'password'; $db = 'database'; $table = 'tablename'; $file = 'export'; $link = mysql_connect($host, $user, $pass) or die("Can not connect." . mysql_error()); mysql_select_db($db) or die("Can not connect."); $result = mysql_query("SHOW COLUMNS FROM ".$table.""); $i = 0; if (mysql_num_rows($result) > 0) { while ($row = mysql_fetch_assoc($result)) { $csv_output .= $row['Field'].", "; $i++; } } $csv_output .= "\n"; $values = mysql_query("SELECT * FROM ".$table.""); while ($rowr = mysql_fetch_row($values)) { for ($j=0;$j<$i;$j++) { $csv_output .= '"'.$rowr[$j].'",'; } $csv_output .= "\n"; } $filename = $file."_".date("Y-m-d",time()); header("Content-type: application/vnd.ms-excel"); header("Content-disposition: csv" . date("Y-m-d") . ".csv"); header( "Content-disposition: filename=".$filename.".csv"); print $csv_output; exit; ?> any ideas?

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• Why does this sql code give error 1066 (Not unique table/alias: ‘customer)?

  - by aadersh patel

  SELECT customer.id, customer.firstName, account.id FROM customer, account INNER JOIN customer ON customer.id = account.customerId ORDER BY customer.id appologies for the poor editing...

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• I am trying to SELECT WHERE IN SELECT, what I am I doing wrong?

  - by Yaqoub Ghanem

  SELECT * FROM seriallog WHERE lastevent IN (SELECT GROUP_CONCAT(CONCAT(' \'', eventid, '\'')) FROM permissions WHERE permissions.userpkid = 1)

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• Operand should contain 1 column(s) about insert into & select

  - by user1038890

  "insert into NodeProfileSections (profile_no, tpl_section_no) select (np.profile_no, tps.tpl_section_no) from NodeProfile np, TemplateProfileSection tps, TemplateProfile tp where np.hostname = '%s' AND np.role = '%s' AND tp.tpl_profile_no = tps.tpl_profile_no AND tp.tpl_name = '%s' AND tp.role = '%s' AND tps.tpl_section_name = '%s';" %(hostname, role, template_name, role, section_name) error_message = 'Operand should contain 1 column(s)' How to solve this problem?

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• What statistics app should I use for my website?

  - by Camran

  I have my own server (with root access). I need statistics of users who visit my website etc etc... I have looked at an app called Webalyzer... Is this a good choice? I run apache2 on a Ubuntu 9 system... If you know of any good statistics apps for servers please let me know. And a follow-up question: All statistics are saved in log-files right? So how large would these log-files become then? Possibility to split them would be good, dont know if this is possible with Webalyzer though...

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• Invalid attempt to access a field before calling Read() INSERT

  - by Raphael Fernandes

  I'm trying to use this code to check if the system already exists a field with this value Dim adap As New MySqlDataAdapter Dim sqlquery = "SELECT * FROM client WHERE code ='"+ TxtCode.Text +"'" Dim comand As New MySqlCommand() comand.Connection = con comand.CommandText = sqlquery adap.SelectCommand = comand Dim data As MySqlDataReader data = comando2.ExecuteReader() leitor.Read() If (data(3).ToString) = code Then MsgBox("already exists", MsgBoxStyle.Information) TxtCode.ResetText() TxtCode.Focus() Else Console.WriteLine(insert("INSERT INTO client (name, tel, code) VALUES ('" & name & "', '" & tel & "')")) con.Close() End If

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