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GoogleDriveManagement/wiki/CSV-Input-Filtering.md
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CSV Input Filtering

There are two values in gam.cfg that can be used to filter the input from gam csv commands.

  • csv_input_row_filter - A list or JSON dictionary used to include specific rows based on column values
  • csv_input_row_drop_filter - A list or JSON dictionary used to exclude specific rows based on column values

These filters can be used alone or in conjunction with the matchfield|skipfield <FieldName> <REMatchPattern> options.

Definitions

Data Selectors

<DataSelector> ::=
        <ListSelector>|
        <FileSelector>|
        <CSVFileSelector>

<Date> ::=
        <Year>-<Month>-<Day> |
        (+|-)<Number>(d|w|y) |
        never|
        today
<Time> ::=
        <Year>-<Month>-<Day>T<Hour>:<Minute>:<Second>[.<MilliSeconds>](Z|(+|-(<Hour>:<Minute>))) |
        (+|-)<Number>(m|h|d|w|y) |
        never|
        now|today
<Operator> ::= <|<=|>=|>|=|!=
<RegularExpression> ::= <String>
        See: https://docs.python.org/3/library/re.html>
<REMatchPattern> ::= <RegularExpression>
<RESearchPattern> ::= <RegularExpression>
<RESubstitution> ::= <String>>

<FieldNameFilter> :: = <REMatchPattern>
<RowValueFilter> ::=
        [(any|all):]boolean:<Boolean>|
        [(any|all):]count<Operator><Number>|
        [(any|all):]countrange!=<Number>/<Number>|
        [(any|all):]countrange=<Number>/<Number>|
        [(any|all):]data:<DataSelector>|
        [(any|all):]date<Operator><Date>|
        [(any|all):]daterange!=<Date>/<Date>|
        [(any|all):]daterange=<Date>/<Date>|
        [(any|all):]length<Operator><Number>|
        [(any|all):]lengthrange!=<Number>/<Number>|
        [(any|all):]lengthrange=<Number>/<Number>|
        [(any|all):]notdata:<DataSelector>|
        [(any|all):]notregex:<RESearchPattern>|
        [(any|all):]notregexcs:<RESearchPattern>|
        [(any|all):]regex:<RESearchPattern>|
        [(any|all):]regexcs:<RESearchPattern>|
        [(any|all):]text<Operator><String>|
        [(any|all):]textrange!=<String>/<String>|
        [(any|all):]textrange=<String>/<String>|
        [(any|all):]time<Operator><Time>|
        [(any|all):]timeofdayrange!=<Hour>:<Minute>/<Hour>:<Minute>|
        [(any|all):]timeofdayrange=<Hour>:<Minute>/<Hour>:<Minute>|
        [(any|all):]timerange!=<Time>/<Time>|
        [(any|all):]timerange=<Time>/<Time>|
<RowValueFilterList> ::=
        "'<FieldNameFilter>:<RowValueFilter>'(,'<FieldNameFilter>:<RowValueFilter>')*"
<RowValueFilterJSONList> ::=
        '{"<FieldNameFilter>": "<RowValueFilter>"(,"<FieldNameFilter>": "<RowValueFilter>")*}' |
        "{\"<FieldNameFilter>\": \"<RowValueFilter>\"(,\"<FieldNameFilter>\": \"<RowValueFilter>\")*}"

Quoting rules

Name:value form.

<RowValueFilterList> ::=
        "'<FieldNameFilter>:<RowValueFilter>'(,'<FieldNameFilter>:<RowValueFilter>')*"
  • <RowValueFilterList>, even if it has one element, should be enclosed in ".
  • Each <FieldNameFilter>:<RowValueFilter> pair should be enclosed in '.
  • If <FieldNameFilter> contains a : or a space, it should be enclosed in \".
  • If <RESearchPattern> or <DataSelector> in <RowValueFilter> contain a space, it should be enclosed in \".
  • If <FieldNameFilter> or <RESearchPattern> in <RowValueFilter> contain a \ to escape a special character or enter a special sequence, enter \\\ on Linux and Mac OS, \\ on Windows,

Examples:

csv_input_row_filter "'\"accounts:used_quota_in_mb\":count>15000'"
csv_input_row_filter "'email:data:\"csvfile gsheet:email user@domain.com FileID Sheet1\"'"
Linux and Mac OS
csv_input_row_filter "'phones.\\\d+.value:regex:(?:^\\\(510\\\) )|(?:^510[- ])\\\d{3}-\\\d{4}'"
Windows
csv_input_row_filter "'phones.\\d+.value:regex:(?:^\\(510\\) )|(?:^510[- ])\\d{3}-\\d{4}'"

JSON form.

<RowValueFilterJSONList> ::=
        '{"<FieldNameFilter>": "<RowValueFilter>"(,"<FieldNameFilter>": "<RowValueFilter>")*}' |
        "{\"<FieldNameFilter>\": \"<RowValueFilter>\"(,\"<FieldNameFilter>\": \"<RowValueFilter>\")*}"
  • The first JSON form can be used on Linux and Mac OS; it can not be used on Windows.
  • The second JSON form can be used on Linux, Mac OS and Windows.
  • If <FieldNameFilter> contains a : or a space, no additional quoting is required

Example:

csv_input_row_filter '{"accounts:used_quota_in_mb": "count>=150"}'
csv_input_row_filter "{\"accounts:used_quota_in_mb\": \"count>=150\"}"

Column row filtering

Row filtering includes/excludes rows based on column values.

Field names

Field names are specified by regular expressions; at its simplest, you specify a complete field name. Field names are matched in a case insensitive manner.

If the field name doesn't contain any of the following regular expression characters ^$*+|$[{(, it will be surrounded with ^$ so that it doesn't match any subfields that begin with the field name as a prefix.

The following filter will match the count field and not the subfields.

config csv_input_row_filter "'externalIds:countrange=1/10'"

primaryEmail,externalIds,externalIds.0.type,externalIds.0.value,externalIds.1.type,externalIds.1.value,...

Inclusive filters

You can include rows for gam csv commands based on column values. You specify a list of fields(headers) and the values they must have. csv_input_row_filter is used to specify the fields and values. Each field name/expression can appear only once in the list.

You specify whether all or any value filters must match for the row to be included in the input.

  • csv_input_row_filter_mode allmatch - All value filters must match for the row to be included in the input; this is the default
  • csv_input_row_filter_mode anymatch - Any value filter must match for the row to be included in the input
gam config csv_input_row_filter <RowValueFilterList> ...
gam config csv_input_row_filter <RowValueFilterJSONList> ...

Exclusive filters

You can exclude rows for gam csv commands based on column values. You specify a list of fields(headers) and the values they must not have. csv_input_row_drop_filter is used to specify the fields and values. Each field name/expression can appear only once in the list.

You specify whether all or any value filters must match for the row to be excluded from the input.

  • csv_input_row_filter_drop_mode allmatch - If all value filters match, the row is excluded from the input
  • csv_input_row_filter_drop_mode anymatch - If any value filter matches, the row is excluded from the input; this is the default
gam config csv_input_row_drop_filter <RowValueFilterList> ...
gam config csv_input_row_drop_filter <RowValueFilterJSONList> ...

Matches

A filter matches if the field has the desired value. lf you specify a regular expression for a field name that matches several columns, the filter matches if any of the columns has a match. In the case of notregex|notregexcs|notdata, the filter matches if none (not any) of the columns has a match.

<RowValueFilter> allows specifying that the filter will match only if all of the columns have a match. In the case of notregex|notregexcs|notdata, the filter matches if some (not all) of the columns have a match. If neither any or all is explicitly specified, any is the default.

These are the row value filter types:

  • boolean:<Boolean> - Used on fields with Boolean values; a blank field is considered False
  • count<Operator><Number> - Used on fields with numbers; a blank field will not match
  • countrange=<Number>/<Number> - Used on fields with numbers; a blank field will not match
    • The field value must be >= the left <Number> and <= the right <Number>
  • countrange!=<Number>/<Number> - Used on fields with numbers; a blank field will not match
    • The field value must be < the left <Number> or > the right <Number>
  • data:<DataSelector> - Used on fields with text; field value must match some value in <DataSelector>; case sensitive
  • date<Operator><Date> - Used on fields with dates or times; only the date portion of a time field is compared; a blank field will not match
  • daterange=<Date>/<Date> - Used on fields with dates or times; only the date portion of a time field is compared; a blank field will not match
    • The field value must be >= the left <Date> and <= the right <Date>
  • daterange!=<Date>/<Date> - Used on fields with dates or times; only the date portion of a time field is compared; a blank field will not match
    • The field value must be < the left <Date> or > the right <Date>
  • length<Operator><Number> - Used on fields with strings; non string fields will not match
  • lengthrange=<Number>/<Number> - Used on fields with strings; non string fields will not match
    • The field length must be >= the left <Number> and <= the right <Number>
  • lengthrange!=<Number>/<Number> - Used on fields with strings; non string fields will not match
    • The field length must be < the left <Number> or > the right <Number>
  • notdata:<DataSelector> - Used on fields with text; field value must not match any value in <DataSelector>; case sensitive
  • notregex:<RESearchPattern> - Used on fields with text; field value must not match <RESearchPattern>; case insensitive
  • notregexcs:<RESearchPattern> - Used on fields with text; field value must not match <RESearchPattern>; case sensitive
  • regex:<RESearchPattern> - Used on fields with text; field value must match <RESearchPattern>; case insensitive
  • regexcs:<RESearchPattern> - Used on fields with text; field value must match <RESearchPattern>; case sensitive
  • text<Operator><String> - Used on fields with text
  • textrange=<String>/<String> - Used on fields with strings
    • The field value must be >= the left <String> and <= the right <String>
  • textrange!=<String>/<String> - Used on fields with strings
    • The field value must be < the left <String> or > the right <String>
  • time<Operator><Time> - Used on fields with times; a blank field will not match
  • timeofdayrange=<Hour>:<Minute>/<Hour>:<Minute> - Used on fields with times; a blank field will not match
    • The field value must be >= the left <Hour>:<Minute> and <= the right <Hour>:<Minute>
  • timeofdayrange!=<Hour>:<Minute>/<Hour>:<Minute> - Used on fields with times; a blank field will not match
    • The field value must be < the left <Hour>:<Minute> or > the right <Hour>:<Minute>
  • timerange=<Time>/<Time> - Used on fields with times; a blank field will not match
    • The field value must be >= the left <Time> and <= the right <Time>
  • timerange!=<Time>/<Time> - Used on fields with times; a blank field will not match
    • The field value must be < the left <Time> or > the right <Time>

Examples

You want to process groups with 100 or more direct members.

gam redirect csv GroupInfo.csv print groups fields directmemberscount
gam config csv_input_row_filter "'directMembersCount:count>100'" csv GroupInfo.csv gam group "~email" ...

You want to process groups not created by an administrator.

gam redirect csv GroupInfo.csv print groups fields admincreated
gam config csv_input_row_drop_filter "'adminCreated:boolean:true'" csv GroupInfo.csv gam group "~email" ...

You want to process users created in the last 30 days.

gam redirect csv UserInfo.csv print users fields creationtime
gam config csv_input_row_filter "'creationTime:date>=-30d'" csv UserInfo.csv gam user "~primaryEmail" ...

You want to process users that are consuming more than 15GB of storage. Special quoting is required because the field name contains a colon.

gam redirect csv UserInfo.csv report user services accounts fields "accounts:used_quota_in_mb"
gam config csv_input_row_filter "'\"accounts:used_quota_in_mb\":count>15000'" csv UserInfo.csv gam user "~primaryEmail" ...

Column row limiting

You can limit the number of rows read from a CSV file.

You want to process the first 10 users that are consuming more than 15GB of storage. Special quoting is required because the field name contains a colon.

gam redirect csv UserInfo.csv report user services accounts fields "accounts:used_quota_in_mb"
gam config csv_input_row_filter "'\"accounts:used_quota_in_mb\":count>15000'" csv_input_row_limit 10 csv UserInfo.csv gam user "~primaryEmail" ...

Saving filters in gam.cfg

If you define a value for csv_input_row_filter, csv_input_row_drop_filter or csv_input_row_limit in the [DEFAULT] section of gam.cfg, it will apply to every gam csv command which is probably not desirable. You can store them in gam.cfg in named sections.

[Filter510]
csv_input_row_filter = 'phones.\\\d+.value:regex:(?:^\\\(510\\\) )|(?:^510[- ])\\\d{3}-\\\d{4}'

You want to process users with phone numbers in the area code 510; the number can be in the format (510) ddd-dddd or 510-ddd-dddd or 510 ddd-dddd.

gam redirect csv UserInfo.csv print users fields name,phones
gam selectinputfilter Filter510 csv UserInfo.csv gam user "~primaryEmail" ...

Validate filters

The gam comment <String>* command that can be used to validate input row filters.

$ more Comment.csv 
col1,col2
aaa,111
bbb,222
ccc,333
$ gam config csv_input_row_drop_filter "col1:regex:bbb" csv Comment.csv gam comment "Col1:~~col1~~" "Col2:~~col2~~"
2022-12-16T12:41:50.045-08:00,0/2,Using 2 processes...
Col1:aaa Col2:111
Col1:ccc Col2:333
$ gam config csv_input_row_filter "col1:regex:bbb"  csv Comment.csv gam comment "Col1:~~col1~~" "Col2:~~col2~~"
2022-12-18T09:42:26.108-08:00,0/1,Using 1 process...
Col1:bbb Col2:222