IF Function,GROUP BY,aggregate Function Problems
Yep, I have all those problems in the title. So I'll explain each one at a time - I did have another thread relating to this very same query but I thought it was time to update where I am with the query because at the moment I feel like I am getting nowhere!
The query I have basically searches through an items_ordered table through each product and checks to see whether the item is VATable or not. This is not where I have the problem though. Where I am really having the first problem is when I am trying to use the IF function to check if the TOTAL of an order is over £300. IF it is then I multiply it my 0.95 (i.e. 5% off). With the query below I get no errors but neither do I get the desired result. It's as though it couldn't even see it. =....
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Aggregate Function
I am kind of confuse how to select this data Which city has the most airports. There are two tables airport and cities the airport has two column IATA_CODE and the name of airports where as city has the IATA_CODE and the name of the cities. I used two diffrent ways but I dont't which one is right. select name, count(distinct IATA_CODE) from airports group by name; SELECT c.name,count(*) AS no_of_airports FROM airports a LEFT JOIN cities c ON c.IATA_CODE = a.CTY_IATA_CODE GROUP BY a.CTY_IATA_CODE; both have the same result and I coudn't be able to select once city who has the most airports.
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Need For Aggregate Function First?
I have a table, like so: col1 col2 A 1 A 2 B 4 B 4 and I want to group it on the first col, and for the second column I want to test if all grouped values or the same, if they are I return the value, else i return some default eg. 0 My query should be something like this: select col1, if (count(distinct col2) = 1, first(col2), 0) as col2 from table group by col1 -> the aggregation function first does not exist..but I need it, with what can I replace it?
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Aggregate Function (AVG) Query Q.
I've been looking at the AVG function, and am trying to figure out how to return a very specific, complex value using the function. Query: sqlTESTavg_curr = "SELECT AVG(DISTINCT TESTcomp) FROM TEST2005 WHERE (StatusCluster = 'Freshman') AND ((Class_Num = 2)" I am trying to et the average of current freshmen applicants TEST scores. The problem is, my table is designed to capture a record for every single student every single day. I can specify to look for only records with dates of "today" - but if I try to use the sql above- it's not going to be correct because I have multiple records with identical scores which will skew the average. We have student IDs that are the table- what I would like to do is set the query to return distinct by the Student ID's but actually return the average of the TESTcomp fields. so - something like this: sqlTESTavg_curr = "SELECT DISTINCT STU_ID AVG(TESTcomp) FROM TEST2005 WHERE (StatusCluster = 'Freshman') AND ((Class_Num = 2)" Obviously that doesn't work. Is this just too complex of a query? How should I go about getting the average of a field on the values from a distinct field that is not the same?
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How To Code Sql Update Using Aggregate Function
These 2 alternative queries express what I want clearly: update phpList_work p, order_info o set p.oid=Max(o.oid) where p.cid=o.cid UPDATE phpList_work p LEFT JOIN order_info o USING (cid) SET p.oid=max(o.oid) they get the error #1111 - Invalid use of group function phpList_work is a list of Customer records. phpList_work already has a subset of the customer list, with ID values (cid) order_info is the order master, keyed by its id (oid) and has cid The invalid query shows I want to select the order_info value of oid that is the MAX(oid) for each value of cid in phpList_work. The manual does not discuss this. If the functions do not support this obvious and useful syntax, how do you do it?
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Count Function & Group By
Getting an error saying I cannot Group on JState2 Is this a version issue? What is an alternate? (want to show only results having greater than 2 of the same JState 's) SELECT COUNT(JState) as JState2, JID, StateTerm FROM JPosts2, State WHERE State.StateAbbr=JPosts2.JState AND (`JClass` = 'Mechanics') GROUP BY JState2 HAVING JState2 >4 ORDER BY JState
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Invalid Use Of Group Function & SUM() And MAX()
I have the following Sql Statement... I'd like to find the sum of hrs worked by an employee in the month, the required number of hrs, and the sum of the difference between the two, the worked hrs are calculated by subtracting the max vtranstime - min vtranstime and the required hrs are calculated by subtracting max to1 - max from1....
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GROUP BY Function And Getting Rid Of NULL Results
Ok, here is a query I'm doing: SELECT site , sum(uniques ), sum(trials +full_price ), round(sum(uniques)/sum(trials +full_price )) as ratio FROM mpa3_all_stats WHERE date BETWEEN '2005-12-01' AND '2005-12-15' GROUP BY site What I want to do is get rid of the null results that I'm getting from this return. As if I order by the last field, the nulls will go to the top if it's ASC. Which I need to do a ASC order on the last column. But I can't figure out a while to get rid of the null results. I've searched everything I could think it would be under. Here is partial data I'm getting: Code: +------+----------------+----------------------------+------------------------------------------------------+ | site | sum( uniques ) | sum( trials + full_price ) | round( sum( uniques ) / sum( trials + full_price ) ) | +------+----------------+----------------------------+------------------------------------------------------+ | 18 | 99865 | 119 | 839 | | 19 | 121386 | 188 | 646 | | 20 | 479 | 0 | NULL | | 21 | 1314 | 0 | NULL | | 22 | 100541 | 226 | 445 | | 33 | 21457 | 169 | 127 | +------+----------------+----------------------------+------------------------------------------------------+
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Error:invalid Use Of Group Function
version:mysql 4.0.18 for win hi,all dear:) when execute sql-statement, error raise: update customer,cu_order set customer_point=0 where customer_keyid=order_customerid and DATE_SUB(now(),INTERVAL 1 YEAR)=DATE_FORMAT(max(order_time),"%Y-%m-%d 23:59:59") error:invalid use of group function i beg someone tells me why?how resolve? thx
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Invalid Use Of Group Function - Max(`mainid`)+1
I am trying to insert a incremented number into the menu table. I will have an autoincremented number as well as the mainid number. When I tested the code that is below, the above error happened. Can someone please tell me the correct way of doing this? I am getting really frustrated with this. Nothing wants to work for me. require "config.php"; $insert06 = "INSERT INTO `menu` (`mainid`) VALUES (max(`mainid`)+1)"; // error line if (mysql_query ($insert06)) { print "Mainid added."; $query2 = mysql_query("SELECT mainid FROM menu") or die ("Could not query because: ".mysql_error()); while($row2 = mysql_fetch_array($query2)) { echo $row2['mainid']." = Mainid"; } } else { print "<p>Could not add the entry because: <b>" . mysql_error() . "</b>. The query was $insert06.</p>"; } mysql_close();
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Invalid Use Of Group Function (was "Baffled By Query Error")
trying to figure out why I keep getting this error with the following query: SELECT c.account_id,a.name,a.company,SUM(c.agent_product_time) AS mins FROM account a LEFT JOIN calls c ON c.account_id = a.id WHERE c.calldate >= DATE_SUB(NOW(),INTERVAL 14 DAY) AND c.agent_id = 2 AND SUM(c.agent_product_time) >= '500' GROUP BY c.account_id ORDER BY mins ERROR: #1111 - Invalid use of group function
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Max Function
I have a table with name, priority and parent as three columns...I want to get the max(priority) grouped by the parent... I am trying to get name, priority, parent, max(parent) as the four columns in the result...Could some one help me with this select name, priority, parent from table1 select max(priority) from table1 group by parent are the two select statements that I wish to combine...is it possible..?
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SQL IN() Function
so i have a query such as SELECT first_name FROM users WHERE user_ID IN (5,4,8,19,8,4) and i want the first_name to be retrieved for EACH of the cases (eg. name is repeated twice for 4 and 8)
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Last Function
How do you get the last row in a grouped query. I have a table with running balances. At the end of the day, I want to find out the last balance. select * from accounts group by date(dateCol) This always gives me the first row of the grouped column dateCol.
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Avg Function
Why doesn't this work: SELECT avg(value) as avg_value from playerstats where avg_value = '100' and stattype = 'r' group by avg_value I'm trying to select the avg_value of 'r' where the avg_value = '100'.
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Using The AVG Function
I am trying to use this query: SELECT average(price) FROM `data` WHERE id IN ( '3', '3', '6' ) to average the price of items users select. The problem is that when a user selects a value more than once it only includes it in the average once. How can I make it average all the values?
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Now() Function
I am using now function to get current date when info is added to my table. I am using a hosting provider that is 6 hrs ahead in time zone so i always have to subtract 6hrs to get the correct time. Is there anyway I can format the time to be inserted to my time zone?
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SOUNDEX Function
I'm using SOUNDEX mysql function to find similar sounding names from a table with 2 million distinct names. Unfortunately there is a single soundex code for every 200,000 names! Meaning there are only 200,000 distinct codes for 2 million entries. Is there any other function / library / technique to work around this immense 1:10 redundancy ? for example, soundex for 'avis', 'apex' and 'apps' is A120, but I'd like to differentiate between them in my search - meaning implement a "stricter" sound comparison than the soundex function offers.
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MBREquals Function
Has the MBREquals function been implemented in the latest 4.1.1-alpha build. I am finding problems with that command. It says that problem is there in sql syntax. If it has been implemented. Can you please help me in the syntax of the command.I am finding the same problems with the Intersection,Union,difference,symdifferenc commands But manual says that they are not yet implemented. So I guess they are not yet implemented.
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Equivalent Function
I use the following function in Oracle SELEC T decode(status,'A','Active','L','Active','Former') FROM Table What it means is: if status = A, return "Active", if status=L, return "Active", else return "Former" in the select statement. Decode in mysql has nothing to do with this functionality and I didnt see a function while browsing the docs online that did this. Is there an equivalent function in mySQL?
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CONCAT Function
I'm needed to insert large BLOBs into a database. With the 1MB packet limit, sending larger amounts of data would be difficult, so I had a neat idea. I would do an initial insert of an empty record and get the auto_insert ID from the response, and then loop through, appending data to the record. My table is simple. One unsigned int auto_increment field (DataID), and one long blob field (BinaryData). When I loop through the data to send, I run: UPDATE BinaryTable SET BinaryData=CONCAT(BinaryData, 'My binary data here') WHERE DataID = 35 The binary data I insert I escape null characters, backslashes, single and double quotes. The data seems to insert fine. The problem is that as I increase the amount of data in the field, CONCAT seems to drop all but the last 416k of the data. Thus if I loop through adding 400k blocks at a time (Which I do) I am left with at most 800k of data in the blob field. Using 4k blocks I end up with 419k of data in the field when all is said and done. Please let me know if/when this will be fixed, and if there is a work around that might be used, r a better way to insert BLOB data is known.
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CONCAT Function (bug?)
I'm needed to insert large BLOBs into a database. With the 1MB packet limit, sending larger amounts of data would be difficult, so I had a neat idea. I would do an initial insert of an empty record and get the auto_insert ID from the response, and then loop through, appending data to the record. My table is simple. One unsigned int auto_increment field (DataID), and one long blob field (BinaryData). When I loop through the data to send, I run: UPDATE BinaryTable SET BinaryData=CONCAT(BinaryData, 'My binary data here') WHERE DataID = 35 The binary data I insert I escape null characters, backslashes, single and double quotes. The data seems to insert fine. The problem is that as I increase the amount of data in the field, CONCAT seems to drop all but the last 416k of the data. Thus if I loop through adding 400k blocks at a time (Which I do) I am left with at most 800k of data in the blob field. Using 4k blocks I end up with 419k of data in the field when all is said and done.
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A Date Function
I read that MySQL needs dates to be in the form YYYY-MM-DD before you can store them in a table. Since users probably won't enter dates in that order (more likely MM-DD-YYYY or MM/DD/YYYY) is there a MySQL date function that I can apply to the date before it is inserted into the database to format the date correctly? (or does the order of the elements have to be taken care of by the application prior to the database query?)
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Add_date Function
I am running the query: SELECT DATE_ADD('pubdate', INTERVAL 3 YEAR) as new_date, pub_autokey from pubs but it returns a null value. What am I doing wrong? In the bigger picture, I want to take a date from pubdate column, add 3 years to it, then save that return value in a different column named pulldate. I am unsure how to do that - can I nest select and insert statements? Something like: INSERT into pubs set pulldate='(SELECT DATE_ADD('pubdate', INTERVAL 3 YEAR) as new_date, pub_autokey from pubs)'
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Count() Function
I don't know why I cannot use the count function in mysql. I used the following query at the mysql prompt, but it gave me the syntax error at Count(*) SELECT QProgram, COUNT(*) FROM ContactUs GROUP BY QProgram;
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Function Error
I´m trying to create a function using SQL language however even the command below that I found in the MySql docs is not working, I always get the same error whe I try to create a function Any suggestions ???? CREATE FUNCTION hello (s CHAR(20)) RETURNS CHAR(50) RETURN CONCAT('Hello, ',s,'!'); Error: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(s Char(20)) Returns Char(50) RETURN CONCAT('HEllo,',s,'!')' at line 1 (State:37000, Native Code: 428)
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Date Function?
I know there is a date function : TO_DAYS but is there a function that will turn a date object into millseconds or seconds?
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Dateadd Function
i have a question what do you mean by this:YMD(YEARS(dateadd(month,0,'2006-10-11')),month(dateadd(month,0,'2006-10-11')),lastday(dateadd(month,0,'2006-10-11')))) can somebody explains to me what do this means, is this same as dateadd(month,0,date)?
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Preg_replace Function
I am looking for a preg_replace function in mysql....one where I can match a substring within a body of text and replace it with a new substring. I have been looking at both the replace and match functions that mysql offers, but nothing seems to fit the bill. Can someone help me construct a simple query so I can update some text within a field without having to write a php script to do so?
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ISNULL Function
In MS SQL I often use the ISNULL function in the select statement to return the non-null field. For example, isnull(field1,field2) would return field1 if there is a value in it but if it is NULL it would return field2. I am now trying to do something similar in MySQL but I see that ISNULL does not work. Is there another easy way to do this in a select statement in MySQL?
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LIKE In Search Function
my mysql server experiences really high load average and this is function which is rans most, does anyone know how to rewrite optimize this? Would be appreciated , thanks. if ($q) { $exp = explode(" ",$q); for ($i=0; $i<count($exp); $i++) { $hvahvor .= " && title LIKE '%$exp[$i]%'"; } } $this->get = mysql_query("SELECT id,type,title,url,sname,surl,date FROM $this->mysql_tb_dl WHERE $hvahvor ORDER BY id DESC LIMIT $this->page, $this->limit");
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Lookup Function
i have 3 tables; Customer, DVDDetails and OrderForm. In the Customer table there are a few standard fields, including a Customer_ID field set to auto increment and as the Primary Key.In my OrderForm table, i have fields into which data about the order is inputted, but i also have a Customer_ID field.Is it possible to have MySQL 'lookup' the Customer_ID field as assigned in the Customer table and basically paste this number into the Customer_ID field in the OrderForm table?I basically want to be able to associate the Customer's details with their order by the unique order number. the Customer_ID fields are the only 2 common fields between these 2 tables...an easier way to this?
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Function For 2 Dates
i have inserted 2 dates say "2008-01-01" and "2008-01-05", I want the return to be "2008-01-01", "2008-01-02", "2008-01-03", "2008-01-04", "2008-01-05" . Is there a mysql function or need a custom function? IF so, can you provide some reference ?
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Median Function
Is there function to find the median value of a column? To all of you who don't remember your core statistics anymore: a median is NOT an average. 1, 1, 1, 10... average = 3.25 1, 1, 1, 10... median = 1
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Rank Function ?
looking for an aggregate function similar to count to return the rank of a grouped set. What I mean by rank is the relationship of the count of the group to the total group. An example would be: SELECT COUNT(*) AS Rows, RANK, Manufacturer FROM Cars GROUP BY Manufacturer If the result was Rows Rank Manufacturer 10 2 Audi 20 1 Honda 5 3 Kia I would like to be able to order by any column but still have the rank mean something.
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DATE_ADD Function
I have a table which stores the date a user registered on my site and I would like to compute the date a year from that as their membership expiry date and store in in a field called expiry_date.Since I use the NOW() function to generate the registration date, can I also use NOW() as a parameter to DATE_ADD along with an INTERVAL 1 YEAR to get expiry date?Also, I am stuck with a fairly old version of MySQL as I am using Mambo (version 3.23.58) so I guess I have to be careful with DATETIME fields? My date_registered column is of type DATETIME. Any help would be enormously appreciated as I ma working to a rapidly approaching deadline.
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Login Function
I’m creating a login function for my customers and administers. But I have some problems modelling the tables. I think I wont something like this Table usergruop Usergroupid usertyp Tabel useraccount Useraccountid fk_usergroup accountname accountpassword The question is how am I suppose to do whit the fk_keys? I need to have something like fk_costumer , fk_admin , fk_reseller because I have to have some connection between usergruop/useraccount and the tables where the costumer, resellers and admin are stored.
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Extract Function
Is there any way to adapt the EXTRACT function to work on multiples of minutes, hours etc. In the example below I would like to count the distinct opid's in an hour for a 2 min or a 5 min interval. I do not want to use a while loop to make multiple queries. Code: SELECT EXTRACT(minute FROM arrived) AS themin, count(DISTINCT(opid)) AS op_count FROM `chatEntries` WHERE `arrived` >= '2008-04-01 00:00:00' AND arrived <= '2008-04-01 23:59:59' GROUP BY themin
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ROWS Not SUM() Function
I have a table with 700000 rows and 300 columns, 299 columns except the first column is BIGINT columns, What I am trying to do is to create a new column call SUMALL and write the SUM of all values of a single row to that column ? I tried several different things including searching for an help, but it did not work out, for instance I tried alter table tbl ADD (sumall BIGINT as (1 + 2 +3))
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Phpmyadmin Md5 Function
Is there a way I can have the MD5 function encrypt a text field every time I add a new row? I know the function is md5(text_password). I also know that UPDATE table SET md5_field=MD5(text_pass).
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Using The SUBSTR Function
I'm wanting to use the SUBSTR function to select only 20 or 30 characters in a string, but i'd like to make it obvious to the user if the string has been cropped by putting "..." at the end. So for example, "This is an example string" would become "This is an exa...", but if the string is short enough that it doesn't need to be cropped then there shouldn't be any dots at the end. Is there a way I can do this using purely MySQL? The only way I can think of is to stop using SUBSTR altogether and do it using PHP.
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LIMIT FUNCTION
in using limit function...please help me what is the coding in displaying the remaining results if i limit the result to 10 then the actual result is 20.
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Calling Db Function
how do i call a db function from with in a db function which returns a result. can some one pls help me with the syntax, when i call a function from with in a function it says funtion does not allow to return a result set where as it returns only one values.
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