UDB attribute flags for tables and vectors
attribute use
pkey primary hash key, must be string type
tkey integer sorting key
+key string key to merge on
+first Use the first imported value when merging
+last Use the last imported values when merging
+add Sum values across rows for each unique value
+bor Bitwise-OR numeric values
+min Take the smallest value
+max Take the largest value
+nozero Ignore values of 0 or an empty string
Substitution strings for the Essentia ‘stream’ command.
string provides
%path path to file being processed
%file file without extension
%FILE file with extension
%cols Full column spec
%delim Delimeter
Substitution strings for the Essentia ‘stream’ or ‘exec’ command.
string provides
%num_nodes number of nodes in cluster
%node_id ID of the node executing the command
%num_threads number of threads assigned per node
%thread_id ID of the thread executing the command
