Search results for "module:Fsdb::Filter::dbcolcreate"
Fsdb::Filter::dbcolcreate - create new columns
Create columns "NewColumn1", etc. with an optional "DefaultValue"....
JOHNH/Fsdb-3.4 - 06 Jan 2024 06:43:43 UTC
Fsdb::Filter::dbcol - select columns from an Fsdb file
Select one or more columns from the input database. If a value is given for empty columns with the -e option, then any named columns which don't exist will be created. Otherwise, non-existent columns are an error. Note: a safer way to create columns ...
JOHNH/Fsdb-3.4 - 06 Jan 2024 06:43:43 UTC
Fsdb::Filter::dbcoltype - define (or redefine) types for columns of an Fsdb file
Define the type of each column, where COLUMN and TYPE are pairs. Or, with the "-v" option, redefine all types as string. The data does not change (just the header)....
JOHNH/Fsdb-3.4 - 06 Jan 2024 06:43:43 UTC
Fsdb::Filter::dbroweval - evaluate code for each row of a fsdb file
Evaluate code for each row of the data. Typical actions are things like reformatting and other data transformations. Code can include embedded column names preceded by underscores; these result in the value of that column for the current row. The val...
JOHNH/Fsdb-3.4 - 06 Jan 2024 06:43:43 UTC
Fsdb::Filter::dbpipeline - allow db commands to be assembled as pipelines in Perl
This module makes it easy to create pipelines in Perl using separate processes. (In the past we used to use perl threads.) By default (as with all Fsdb modules), input is from STDIN and output to STDOUT. Two helper functions, fromfile and tofile can ...
JOHNH/Fsdb-3.4 - 06 Jan 2024 06:43:43 UTC