Table 1: 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 |
Table 2: 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 |
Table 3 : 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 |