# Data flow processors The following processors are available to build your data flow and prepare your data. the Filter icon ### Filter processor Filters data based on conditions the Select fields icon ### Select fields processor Renames and reorganizes your fields the Join icon ### Join processor Combines two flows based on one or more keys the Map fields icon ### Map fields processor Looks up values in a mapping table and replaces or adds a field the Union icon ### Union processor Appends records from a second flow the Fork icon ### Fork processor Duplicates the data into two identical outputs the Aggregate icon ### Aggregate processor Performs operations on groups of the data the Sort icon ### Sort processor Sorts the data based on given fields the Remove fields icon ### Remove fields processor Removes the selected fields the Strings icon ### Strings processor Performs string related operations the Dates icon ### Dates processor Performs date related operations the Math icon ### Numbers processor Performs number related operations the Math icon ### Math processor Performs calculations on numbers the Concatenate icon ### Concatenate fields processor Merges the content of two fields the Split icon ### Split fields processor Splits fields using a separator the Aggregate icon ### Cleanse processor Fills or replaces fields with a given value the Hash icon ### Hash processor Hides the original data through hashing the Calculate fields icon ### Calculate fields processor Adds new fields based on Qlik script expressions the Unpivot icon ### Unpivot processor Unpivots table columns to rows the Pivot icon ### Pivot processor Pivots rows to table columns the Window icon ### Window processor Performs calculations on specific data ranges the Script icon ### Qlik script processor Creates or transforms inputs using Qlik script the Table recipe icon ### Table recipe processor Embed a table recipe to the data flow the Sample icon ### Sample processor Keeps only the first rows or a random subset of rows