sql-order-by

I have sql query in which i want return rows with distinct value order by particular column. like say,i want disntict batchno from ordertable order by locationid. i have tried google also but not able to find out solution ORDER BY items must appear in the select list if SELECT DISTINCT is specified. that what i got every time i tried. when not using distinct i got output but with duplicate rows using this query Select Batchno,LocationId from Ordertbl order by case when[LocationId] =3 THEN 0 ELSE 1 END, [LocationId] if i use distinct it gives me error these are query i tried out. Select

I have this code, this code gets trouble and so much time to be executed to show RANDOM posts from DB: $totalrows = 10; $sql = "SELECT posts.Tags as tags, posts.OwnerUserId as postsid, posts.Id as postid, posts.Body as body, posts.Title as title, users.Id as userid, users.DisplayName as usersname FROM posts JOIN users ON posts.OwnerUserId = users.Id WHERE posts.Title != '' order by rand() asc limit " . $totalrows; $r = mysql_query($sql) or die(mysql_error()); Please tell me what should I change to show random posts more quikly? Regards,Dan rand() is very expensive. This will help: http://www

I have a Oracle procedure inside a package like this PROCEDURE getEmployee ( pinLanguage IN VARCHAR2, pinPage IN NUMBER, pinPageSize IN NUMBER, pinSortColumn IN VARCHAR2, pinSortOrder IN VARCHAR2, poutEmployeeCursor OUT SYS_REFCURSOR ) AS BEGIN OPEN poutEmployeeCursor FOR SELECT * FROM ( SELECT EMPLOYEE_ID, USERNAME, FULL_NAME, DATE_OF_BIRTH, EMP.GENDER_ID, GEN_TR.GENDER, EMP.WORK_TYPE_ID, WT_TR.WORK_TYPE, SALARY, EMAIL, PROFILE_IMAGE, ROW_NUMBER() OVER (ORDER BY EMPLOYEE_ID ASC) RN FROM EMPLOYEES EMP INNER JOIN GENDERS GEN ON EMP.GENDER_ID = GEN.GENDER_ID LEFT JOIN GENDERS_MLD GEN_TR ON GEN

This is my normal mysql query: $sql = "SELECT * FROM item order by "; if(my_condition) { $sql. = "FIELD(`category`, 'Auto & Accessories', 'Couch', 'Bed', 'Desk & Office', 'Bike & Scooter', 'Tools', 'Leisure', 'Iron & Wood', 'Cabinet', 'Kitchen & Accessories', 'Refrigerator & Appliances', 'Toys & Games', 'Chair', 'Table', 'Garden & Terrace', 'TV, HIFI & Computers', 'General Item')"; } else { $sql .= "category asc"; } I need it in CI in active record. I tried in following way: if(my_condition) { $this->db->order_by("FIELD(`category`, 'Auto & Accessories', 'Couch', 'Bed', 'Desk & Office', 'Bike &

Is this possible ? Let's say I have a list of addresses, with a lot of duplicate entries. I need to filter out all the duplicates, because some addresses have slightly different names but the same postalcode and telephone number. First I do a GROUP BY on postalcode and telephone. SELECT name, address, postalcode, place, phone FROM addresses GROUP BY postalcode, phone But then I get random names. I would like to get the best name, that is, the name with the most entries per postalcode/phone. So I thought of the following. Here I use the SUBSTRING_INDEX function to only get the first item in the

I have a few tables, Listings, ListingImages and a few others related to Listings. ListingImages is related to Listings so that you can have many ListingImages per Listing. When I query this table I do; IQueryable<Listing> ListingToSendToView = (from x in DBEntities.ListingSet.Include("ListingImages") .Include("OtherTables") where x.Listing.ID == (int)LID orderby x.ID descending select x).First(); Now this is fine. However, I now want to sort the ListingImages independently within each Listing (by an ImageOrder column I have in that table). How can I do this and pass all my Includes(...).

I have a MySQL database which has a customer table. Some dummy data is: customer_id date 000001 2008-10-10 000002 2008-11-11 000003 2010-01-02 000004 2007-04-03 000005 2010-05-05 I want to run a query which will give me a result like so: year customer_count 2007 1 2008 2 2010 2 I know I need to use group by, however I am unable to wrap my head around how to group based on year value of a date field, and how to have them in an order. Extract the year from the date and group by it select year(date) as year, count(customer_id) as customers from your_table group by year order by year asc Use the

I have code in Sql Server 2008 which concatenates some strings from a query into a variable using the tried-and-true SELECT @VAR = @VAR + FIELD FROM TABLE ORDER BY OTHERFIELD syntax. This is my exact SQL: SELECT @SQL = @SQL + ISNULL(FORMULA, CASE WHEN USEMAP = 1 THEN 'dbo.getFieldTranslation('+CONVERT(VARCHAR,ROWID)+', [' + ISNULL(ENCOMPASSFIELD,'') + '])' ELSE '[' + ISNULL(ENCOMPASSFIELD,'') + ']' END ) + ' AS "' + FILECOLNAME + '",' + @CRLF FROM dbo.EXPORTMAP_EX WHERE WAREHOUSEID = @WHSID ORDER BY ORDERIDX This was working beautifully and perfectly. Then suddenly today, it stopped working.