11-04-2018
Welcome to the forum.
Please become accustomed to provide decent context info of your problem.
It is always helpful to carefully and detailedly phrase a request, and to support it with system info like OS and shell, related environment (variables, directory structures, options), preferred tools, adequate (representative) sample input and desired output data and the logics connecting the two including your own attempts at a solution, and, if existent, system (error) messages verbatim, to avoid ambiguities and keep people from guessing.
In this special case:
- Structure and contents of input data missing (e.g. the HEAD variable, and others).
- where to insert the conditional comparison? BTW, why not use awk for the entire task, now that you use it anyhow?
Aside: thanks for using CODE tags.
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LEARN ABOUT DEBIAN
jifty::dbi::column
Jifty::DBI::Column(3pm) User Contributed Perl Documentation Jifty::DBI::Column(3pm)
NAME
Jifty::DBI::Column - Encapsulates a single column in a Jifty::DBI::Record table
DESCRIPTION
This class encapsulates a single column in a Jifty::DBI::Record table description. It replaces the _accessible method in
Jifty::DBI::Record.
It has the following accessors: "name type default validator boolean refers_to readable writable length".
new
is_numeric
Returns true if the column is of some numeric type, otherwise returns false.
is_string
Returns true if this column is a text field
is_boolean
Returns true if this column is a boolean
serialize_metadata
Returns a hash describing this column object with enough detail to fully describe it in the database. Intentionally skips "record_class",
all column attributes starting with "_", and all column attributes which are undefined. The "known" attributes in the "attributes" hash
are flattened and returned as well. The list of known attributes are:
container
label hints render_as
display_length
valid_values
available_values
autocompleted
documentation
no_placeholder
Setting this to a true value causes "load_by_cols" in Jifty::DBI::record to not use a placeholder when loading the column. This can
allow the database to come up with better query plans in some cases.
serialize_metadata2
Returns a hash describing this column object with enough detail to fully describe it in the database. Intentionally skips "record_class",
all column attributes starting with "_", and all column attributes which are undefined.
validator
Gets/sets the validator coderef for the column.
read
DEPRECATED. Use "$column->readable" instead.
write
DEPRECATED. Use "$column->writable" instead.
length
DEPRECATED. Use "$column->max_length" instead.
until
DEPRECATED. Use "$column->till" instead.
active
Returns the a true value if the column method exists for the current application version. The current application version is determined by
checking the "schema_version" in Jifty::DBI::Record of the column's "record_class". This method returns a false value if the column is not
yet been added or has been dropped.
This method returns a false value under these circumstances:
o Both the "since" trait and "schema_version" method are defined and "schema_version" is less than the version set on "since".
o Both the "till" trait and "schema_version" method are defined and "schema_version" is greater than or equal to the version set on
"till".
Otherwise, this method returns true.
perl v5.14.2 2012-01-25 Jifty::DBI::Column(3pm)