Search the Community

I have a diagram representing a database and need to find a way to update a given table with respect to information about elements in that table. Here is the database design: https://i.stack.imgur.com/HR6q2.jpg I have a Playlist defined which is called "Frank's Stuff" which is owned by the Customer Frank Harris. The question is the following: Update the playlist "Frank's Stuff" as a function of the track duration. Display this playlist with the TrackID, Name and Milliseconds to verify. I've read that you cannot use an ORDER BY statement with and UPDATE statement unless it is enclosed in a SELECT statement. I'm not quite sure how to do all this though and would greatly appreciate some help. Thanks!

Hello internet, I am using the following calls to get an ordered list of largest to smallest info of all that row's data: *NOTE: there are only 6 entries in mydatabase with grp='c' $result = mysql_query("SELECT * FROM mydatabase WHERE grp='c' ORDER BY score DESC LIMIT 0,1", $con); $rows = array();while ($row = mysql_fetch_assoc($result))...... more code to place data into a specific id to use an onload to populate objects $result = mysql_query("SELECT * FROM mydatabase WHERE grp='c' ORDER BY score DESC LIMIT 1,1", $con); $rows = array();while ($row = mysql_fetch_assoc($result))...... more code to place data into a specific id to use an onload to populate objects $result = mysql_query("SELECT * FROM mydatabase WHERE grp='c' ORDER BY score DESC LIMIT 2,1", $con); $rows = array();while ($row = mysql_fetch_assoc($result))...... more code to place data into a specific id to use an onload to populate objects $result = mysql_query("SELECT * FROM mydatabase WHERE grp='c' ORDER BY score DESC LIMIT 3,1", $con); $rows = array();while ($row = mysql_fetch_assoc($result))...... more code to place data into a specific id to use an onload to populate objects $result = mysql_query("SELECT * FROM mydatabase WHERE grp='c' ORDER BY score DESC LIMIT 4,1", $con); $rows = array();while ($row = mysql_fetch_assoc($result))...... more code to place data into a specific id to use an onload to populate objects $result = mysql_query("SELECT * FROM mydatabase WHERE grp='c' ORDER BY score DESC LIMIT 5,1", $con); $rows = array();while ($row = mysql_fetch_assoc($result))...... more code to place data into a specific id to use an onload to populate objects What ends up happening is that I get a list together but here is what I get DESC LIMIT 0,1 >>> this produces the second largest score - NOT the largest DESC LIMIT 1,1 >>> this produces the third largest score DESC LIMIT 2,1 >>> this produces the fourth largest score DESC LIMIT 3,1 >>> this produces the fifth largest score DESC LIMIT 4,1 >>> this produces the sixth largest score DESC LIMIT 5,1 >>> this produces the LARGEST score - not the smallest

hi there, the following query was developed and works as it should. SELECT ( SELECT COUNT(DISTINCT SP1.bigint_ProspectID, PLS1.smallint_ProspectOrdinal) FROM 10_serviceprospects SP1 LEFT JOIN 13_prospectleadsent PLS1 ON SP1.bigint_ProspectID = PLS1.bigint_ProspectID WHERE PLS1.timestamp_Sent BETWEEN "2013-08-01 00:00:00" AND "2013-08-30 23:59:59" AND SP1.bigint_ServiceID = SS.bigint_ServiceID AND PLS1.bigint_SupplierID = S.bigint_SupplierID ) AS `Previous Month`, ( SELECT COUNT(DISTINCTROW SP2.bigint_ProspectID, PLS2.smallint_ProspectOrdinal) FROM 10_serviceprospects SP2 LEFT JOIN 13_prospectleadsent PLS2 ON SP2.bigint_ProspectID = PLS2.bigint_ProspectID WHERE PLS2.timestamp_Sent BETWEEN "2013-09-01 00:00:00" AND "2013-09-31 23:59:59" AND SP2.bigint_ServiceID = SS.bigint_ServiceID AND PLS2.bigint_SupplierID = S.bigint_SupplierID ) AS `Last Month`, ( SELECT COUNT(DISTINCT SP3.bigint_ProspectID, PLS3.smallint_ProspectOrdinal, PLS3.bigint_SupplierID) FROM 10_serviceprospects SP3 LEFT JOIN 13_prospectleadsent PLS3 ON SP3.bigint_ProspectID = PLS3.bigint_ProspectID WHERE PLS3.timestamp_Sent BETWEEN "2013-10-01 00:00:00" AND "2013-10-30 23:59:59" AND SP3.bigint_ServiceID = SS.bigint_ServiceID AND PLS3.bigint_SupplierID = S.bigint_SupplierID ) AS `Current Month`, ( SELECT COUNT(DISTINCT SP0.bigint_ProspectID, PLS0.smallint_ProspectOrdinal) FROM 10_serviceprospects SP0 LEFT JOIN 13_prospectleadsent PLS0 ON SP0.bigint_ProspectID = PLS0.bigint_ProspectID WHERE PLS0.timestamp_Sent BETWEEN "2013-08-01 00:00:00" AND "2013-10-30 23:59:59" AND SP0.bigint_ServiceID = SS.bigint_ServiceID AND PLS0.bigint_SupplierID = S.bigint_SupplierID ) AS `Total`, S.text_SupplierName AS `Supplier Name` FROM 5_suppliers S JOIN 4_servicesuppliers SS ON (S.bigint_SupplierID = SS.bigint_SupplierID) WHERE SS.bigint_ServiceID = 1 # Bakkie Canopies OnlyAND S.smallint_SupplierStatus = 4 # Freemium Suppliers OnlyGROUP BY S.bigint_SupplierID ORDER BY `Total` DESC, `Supplier Name` ASC; # Order by Total, then Supplier Name took about a day to develop this inbetween other work. it returns the correct data. the output is available at https://performatix.co/csv/Bakkie_Canopies_Freemium_Supplier_Opportunities_2013-10-09.csv i was then requested to change the ordering by `Total` and primarily by `Region Description`; as well as grouping by Region ID and primarily by Supplier ID, creating a secondary output. SELECT R.text_RegionDescription AS `Region Description`, ( SELECT COUNT(DISTINCT SP1.bigint_ProspectID, PLS1.smallint_ProspectOrdinal) FROM 10_serviceprospects SP1 LEFT JOIN 13_prospectleadsent PLS1 ON SP1.bigint_ProspectID = PLS1.bigint_ProspectID WHERE PLS1.timestamp_Sent BETWEEN "2013-08-01 00:00:00" AND "2013-08-30 23:59:59" AND SP1.bigint_ServiceID = SS.bigint_ServiceID AND PLS1.bigint_SupplierID = S.bigint_SupplierID AND SP1.bigint_RegionID = R.bigint_RegionID ) AS `Previous Month`, ( SELECT COUNT(DISTINCTROW SP2.bigint_ProspectID, PLS2.smallint_ProspectOrdinal) FROM 10_serviceprospects SP2 LEFT JOIN 13_prospectleadsent PLS2 ON SP2.bigint_ProspectID = PLS2.bigint_ProspectID WHERE PLS2.timestamp_Sent BETWEEN "2013-09-01 00:00:00" AND "2013-09-31 23:59:59" AND SP2.bigint_ServiceID = SS.bigint_ServiceID AND PLS2.bigint_SupplierID = S.bigint_SupplierID AND SP2.bigint_RegionID = R.bigint_RegionID ) AS `Last Month`, ( SELECT COUNT(DISTINCT SP3.bigint_ProspectID, PLS3.smallint_ProspectOrdinal, PLS3.bigint_SupplierID) FROM 10_serviceprospects SP3 LEFT JOIN 13_prospectleadsent PLS3 ON SP3.bigint_ProspectID = PLS3.bigint_ProspectID WHERE PLS3.timestamp_Sent BETWEEN "2013-10-01 00:00:00" AND "2013-10-30 23:59:59" AND SP3.bigint_ServiceID = SS.bigint_ServiceID AND PLS3.bigint_SupplierID = S.bigint_SupplierID AND SP3.bigint_RegionID = R.bigint_RegionID ) AS `Current Month`, ( SELECT COUNT(DISTINCT SP0.bigint_ProspectID, PLS0.smallint_ProspectOrdinal) FROM 10_serviceprospects SP0 LEFT JOIN 13_prospectleadsent PLS0 ON SP0.bigint_ProspectID = PLS0.bigint_ProspectID WHERE PLS0.timestamp_Sent BETWEEN "2013-08-01 00:00:00" AND "2013-10-30 23:59:59" AND SP0.bigint_ServiceID = SS.bigint_ServiceID AND PLS0.bigint_SupplierID = S.bigint_SupplierID AND SP0.bigint_RegionID = R.bigint_RegionID ) AS `Total`, S.text_SupplierName AS `Supplier Name` FROM 5_suppliers S JOIN 4_servicesuppliers SS ON (S.bigint_SupplierID = SS.bigint_SupplierID) JOIN 1_regions R ON (SS.bigint_RegionID = R.bigint_RegionID)WHERE SS.bigint_ServiceID = 1 # Bakkie Canopies OnlyAND S.smallint_SupplierStatus = 4 # Freemium Suppliers OnlyGROUP BY SS.bigint_RegionID, SS.bigint_SupplierID ORDER BY `Total` DESC, `Region Description` ASC; # Order by Total, then Region Description this took about an hour inbetween other work. the results are in https://performatix.co/csv/Bakkie_Canopies_Regional_Freemium_Supplier_Opportunities_2013-10-09.csv however you will notice that the values do not corroborate with the first (this was discovered recently after reviewing the csv's! what is wrong with this query to get it to corroborate with the first?). i was then asked to order by `Total` but primarily by `Region Description`, and group by Region ID - creating a third output. SELECT R.text_RegionDescription AS `Region Description`, ( SELECT COUNT(DISTINCT SP1.bigint_ProspectID, PLS1.smallint_ProspectOrdinal) FROM 10_serviceprospects SP1 LEFT JOIN 13_prospectleadsent PLS1 ON SP1.bigint_ProspectID = PLS1.bigint_ProspectID WHERE PLS1.timestamp_Sent BETWEEN "2013-08-01 00:00:00" AND "2013-08-30 23:59:59" AND SP1.bigint_ServiceID = SS.bigint_ServiceID AND PLS1.bigint_SupplierID = S.bigint_SupplierID AND SP1.bigint_RegionID = R.bigint_RegionID ) AS `Previous Month`, ( SELECT COUNT(DISTINCTROW SP2.bigint_ProspectID, PLS2.smallint_ProspectOrdinal) FROM 10_serviceprospects SP2 LEFT JOIN 13_prospectleadsent PLS2 ON SP2.bigint_ProspectID = PLS2.bigint_ProspectID WHERE PLS2.timestamp_Sent BETWEEN "2013-09-01 00:00:00" AND "2013-09-31 23:59:59" AND SP2.bigint_ServiceID = SS.bigint_ServiceID AND PLS2.bigint_SupplierID = S.bigint_SupplierID AND SP2.bigint_RegionID = R.bigint_RegionID ) AS `Last Month`, ( SELECT COUNT(DISTINCT SP3.bigint_ProspectID, PLS3.smallint_ProspectOrdinal, PLS3.bigint_SupplierID) FROM 10_serviceprospects SP3 LEFT JOIN 13_prospectleadsent PLS3 ON SP3.bigint_ProspectID = PLS3.bigint_ProspectID WHERE PLS3.timestamp_Sent BETWEEN "2013-10-01 00:00:00" AND "2013-10-30 23:59:59" AND SP3.bigint_ServiceID = SS.bigint_ServiceID AND PLS3.bigint_SupplierID = S.bigint_SupplierID AND SP3.bigint_RegionID = R.bigint_RegionID ) AS `Current Month`, ( SELECT COUNT(DISTINCT SP0.bigint_ProspectID, PLS0.smallint_ProspectOrdinal) FROM 10_serviceprospects SP0 LEFT JOIN 13_prospectleadsent PLS0 ON SP0.bigint_ProspectID = PLS0.bigint_ProspectID WHERE PLS0.timestamp_Sent BETWEEN "2013-08-01 00:00:00" AND "2013-10-30 23:59:59" AND SP0.bigint_ServiceID = SS.bigint_ServiceID AND PLS0.bigint_SupplierID = S.bigint_SupplierID AND SP0.bigint_RegionID = R.bigint_RegionID ) AS `Total`FROM 5_suppliers S JOIN 4_servicesuppliers SS ON (S.bigint_SupplierID = SS.bigint_SupplierID) JOIN 1_regions R ON (SS.bigint_RegionID = R.bigint_RegionID)WHERE SS.bigint_ServiceID = 1 # Bakkie Canopies OnlyAND S.smallint_SupplierStatus = 4 # Freemium Suppliers OnlyGROUP BY SS.bigint_RegionID ORDER BY `Total` DESC, `Region Description` ASC; # Order by Total, then Region Description this took approximately another hour between other work. the results are in https://performatix.co/csv/Bakkie_Canopies_Regional_Freemium_Supplier_Opportunities_2013-10-09.csv once again - the data does not corroborate with the first csv, the issue i am facing is that i do not understand why the queries are not synchronous to the data... the first query works just as well for a different service, however the second and third queries do not return anything at all. i am assuming that this is because they do not have varying regions (all the same). further than this i just keep hitting my head... anyone comfortable enough to have a look at the queries and suggest changes other than the ones i applied? the data from the tables are available at https://performatix.co/csv/1_regions, 2_servicescatalogue, 4_servicesuppliers, 5_suppliers, 10_serviceprospects & 13_prospectleadsent.csv.