Railo 4.2 Reference
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This function creates a new Query that returns all rows from an query that match the given filter.


queryfilter(query query,function filter,[boolean parallel,[number maxThreads]]):query


The arguments for this function are set. You can not use other arguments except the following ones.
Name Type Required Description
query query  Yes query to filter entries from  
filter function  Yes filter can be a function/closure that implements the following constructor [function(struct row[, number rowNumber, query query]):boolean].  
parallel boolean  No execute closures parallel  
maxThreads number  No maximum number of threads executed, ignored when argument "parallel" is set to false