case

问题 We're trying to make one drop box change another. We have this code which works fine on Firefox, safari and chrome. But in IE 8+ changing the first dropdown makes no difference to the second. What do we have to change to make it work in IE ? Thanks, We have this jquery: //set up the global variable maxChecks which stops donor ticking too many boxes var maxChecks var checkCount=0 var boxeschecked = 0 //now change the drop down jQuery.noConflict(); jQuery(document).ready(function($) { $

问题 I put together a query to pull out peoples' names, giving preference to the version of that name that is written in the language/writing script of the person viewing the page. I was having some troubles with missing records earlier, and posted a question about that here. I received an answer that suggested using a CASE statement and applying a score to rank the names based on the preferred language/script. I've gotten as far as the ranking, which has allowed the correct number of records to

问题 How can I get the following code to work (I want to decide upon an action based on the class of the arg): def div arg material = case arg.class when String [arg, arg.size] when Fixnum arg end material end 回答1: The comparison in the case statement is done with the === - also called the case equality operator. For classes like String or Fixnum it defined as to test if the object is an instance of that class. Therefore instead of a class just pass the instance to the comparison by removing the

问题 I am wondering if it is possible to specify multiple values in the then part of a case statement in T-SQL ? I have attached a chunk of code where I am using this to join in some tables in a query. I have included a comment in the snippet. LEFT JOIN Business B ON v.BusID = B.BusID LEFT JOIN BusinessTypeKey T ON B.BusinessTypeID = T.BusTypeID LEFT JOIN Location L ON L.BusID = B.BusID AND L.HeadQuarters = CASE WHEN (SELECT COUNT(1) from Location L2 WHERE L2.BusID = B.BusID) = 1 THEN 1,0 -- Would

问题 I know I can use CASE statement in an SQLite query but I don't know how to built it in a WHERE clause. Actually I have this in a long WHERE clause (this is just the part concerned by the question): AND (%d >= (wines.year + wines.maturity)) AND (%d < (wines.year + wines.apogee)) In fact I want just that : AND (%d >= (wines.year + wines.maturity)) => if wines.apogee IS NULL or also: AND (%d >= (wines.year + wines.maturity)) AND (%d < (wines.year + wines.apogee)) => if wines.apogee IS NOT NULL

问题 I'm confused. The following code has errors ("..." represents elided code): int byteOrder = ...; switch (byteOrder) { case HDF5Constants.H5T_ORDER_BE: return ByteOrder.BIG_ENDIAN; ... } The error is on the case statement and Eclipse complains "case expressions must be constant expressions". I looked in the source file for this and it has a long list of lines like this: final public static int H5T_ORDER_BE = H5.J2C( JH5T_ORDER_BE ); I thought you could use final public static int constants as

问题 Please Consider : Subsets[Flatten[ParallelTable[{i, j}, {i, 1, 96}, {j, 1, 4}], 1], {4}] I need to select all the Sublist such that the the i value is never the same within each sublist of 4 {{3,1},{4,1},{5,1},{6,1}} should be accepted while {{1,1},{1,2},{2,3},{6,1}} should be rejected. The Value 1 for i being repeated 2 times. I know I could do this with Cases, but don`t understand the Syntax of it, and find the help on Cases rather empty compared to its potential applications. 回答1: Assuming

问题 I'm using mysqlimport to do mass table inserts (replacing duplicates primary keys). Several tables have date time columns with records containing values '0000-00-00'. What I would like is a trigger which detects these '0000-00-00' values and replaces with '1950-01-01', otherwise keep the datetime value in the record (i.e. when it's not '0000-00-00'). I have tried the following: CREATE TRIGGER set_datetime BEFORE INSERT ON tbl FOR EACH ROW CASE WHEN date_col='0000-00-00' THEN SET date_col=

问题 I've got a table that returns the history of a value, as well as the current one, each with a date. The oldest date is the main record. If the value is changed, a new record is created, with the old value, and the main record is updated with the new value. If this happens again, a third record is created, which contains the now old value. So if the value starts at 4, changes to 2, then again changes to 1. The records will go 1 4 2 I'm currently creating an inner join on the table to itself as

问题 I am trying to write a SQL Select statement to return records based on a user input through a front end. I want to write the Select statement like this: SELECT somefields FROM sometable WHERE CASE variable WHEN 'blank' THEN field IS NULL ELSE field = field END Basically I either want to filter a column to find NULL values or ignore the filter and return all values depending on the value of the variable. I know that the results of the CASE statement is not executable but how can I do this? 回答1