https://github.com/takeyamajp/powerquery-indexrowsforeachgroup

Power Query library to smartly assign sequential numbers for each group.
https://github.com/takeyamajp/powerquery-indexrowsforeachgroup

m powerbi powerquery

Last synced: 4 months ago
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Power Query library to smartly assign sequential numbers for each group.

• Host: GitHub
• URL: https://github.com/takeyamajp/powerquery-indexrowsforeachgroup
• Owner: takeyamajp
• License: gpl-3.0
• Created: 2023-03-11T04:48:17.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2023-04-09T13:34:15.000Z (about 3 years ago)
• Last Synced: 2025-10-19T15:39:43.420Z (8 months ago)
• Topics: m, powerbi, powerquery
• Homepage:
• Size: 216 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.ja.md
  • License: LICENSE

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README

          
# PowerQuery-IndexRowsForEachGroup

[`English`](https://github.com/takeyamajp/PowerQuery-IndexRowsForEachGroup)  

`Japanese (日本語)`

もし有用なら、このリポジトリーにスターを付けていただけると励みになります。   

このライブラリーでは、正確に思った通りの並び順で連番を振ることが出来ます。  

さらに、このライブラリーは列の型を完全に保持します。

- [サンプルコード](#サンプルコード)

- [パラメータ説明](#パラメータ説明)

  - [table](#table)

  - [key](#key)

  - [comparisonCriteria](#comparisoncriteria)

  - [newColumnName](#newcolumnname)

- [カスタム関数（構文と定義）](#カスタム関数構文と定義)

  - [IndexRowsForEachGroup](#indexrowsforeachgroupグループ毎に指定した並び順で連番を振ります)

  - [CountRowsForEachGroup](#countrowsforeachgroupグループ毎の行数をカウントします)

  - [IndexGroups](#indexgroups指定した並び順でグループに連番を振ります)

  - [CountGroups](#countgroupsグループ数をカウントします)

  - [IndexRows](#indexrows各行に連番を振ります)

  - [CountRows](#countrows行数をカウントします)

# サンプルコード

[先にカスタム関数を登録しておいてください。](#カスタム関数構文と定義)  

このサンプルコードを実行するには、Power Query エディターで空のクエリを作成して、それを詳細エディターで開いてください。  

そして、既存のコードを以下のサンプル コードで置き換えてください。

~~~

let

    Source = #table(type table[Region = text, Country = text], {

        {"Asia", "Australia"}, 

        {"Asia", "China"}, 

        {"Asia", "India"}, 

        {"Asia", "Japan"}, 

        {"Europe", "France"}, 

        {"Europe", "Germany"}, 

        {"Europe", "United Kingdom"}, 

        {"North America", "Canada"}, 

        {"North America", "United States"}

    }),

    Custom1 = IndexRowsForEachGroup(Source, "Region", {"Region", "Country"}, "INDEX1"),

    Custom2 = CountRowsForEachGroup(Custom1, "Region", "COUNT1"),

    Custom3 = IndexGroups(Custom2, "Region", {"Region", "Country"}, "INDEX2"),

    Custom4 = CountGroups(Custom3, "Region", "COUNT2"),

    Custom5 = IndexRows(Custom4, {"Region", "Country"}, "INDEX3"),

    Custom6 = CountRows(Custom5, "COUNT3")

in

    Custom6

~~~

![Sample Image](sample.png)

# パラメータ説明

### table

処理対象のテーブルを指定してください。

### key

指定したキーで処理するグループを判断します。

単一のキーを指定する場合。

`"Region"`

複数のキーを指定する場合。

`{"Region", "Country"}`

### comparisonCriteria

指定した条件で連番を振ります。

単一の列を指定する場合。

`"Region"` or `{{"Region", Order.Ascending}}`

複数の列を指定する場合。

`{"Region", "Country"}` or `{{"Region", Order.Ascending}, {"Country", Order.Descending}}`

### newColumnName

追加される列の名前です。省略した場合は `@INDEX` or `@COUNT` になります。

# カスタム関数（構文と定義）

カスタム関数を作成するには、Power Query エディターで空のクエリを作成して、以下の関数定義を数式バーに貼り付けてください。

### IndexRowsForEachGroup（グループ毎に、指定した並び順で連番を振ります。）

IndexRowsForEachGroup(`table` as table, `key` as anynonnull, `comparisonCriteria` as anynonnull, optional `newColumnName` as nullable text) as table

~~~

= (table as table, key as anynonnull, comparisonCriteria as anynonnull, optional newColumnName as nullable text) as table => Table.Sort(Table.TransformColumnTypes(Table.ExpandTableColumn(Table.SelectColumns(Table.AddColumn(Table.Group(table, key, {{"_GTABLE", each _}}), "_ITABLE", each Table.AddIndexColumn(Table.Sort([_GTABLE], comparisonCriteria), newColumnName ?? "@INDEX", 1, 1)), "_ITABLE"), "_ITABLE", Table.ColumnNames(table) & {newColumnName ?? "@INDEX"}, Table.ColumnNames(table) & {newColumnName ?? "@INDEX"}), Table.ToRows(Table.SelectColumns(Table.AddColumn(Table.Schema(table), "Type", each if [TypeName] = "Number.Type" then type number else if [TypeName] = "Currency.Type" then Currency.Type else if [TypeName] = "Int64.Type" then Int64.Type else if [TypeName] = "Percentage.Type" then Percentage.Type else if [TypeName] = "DateTime.Type" then type datetime else if [TypeName] = "Date.Type" then type date else if [TypeName] = "Time.Type" then type time else if [TypeName] = "DateTimeZone.Type" then type datetimezone else if [TypeName] = "Duration.Type" then type duration else if [TypeName] = "Text.Type" then type text else if [TypeName] = "Logical.Type" then type logical else if [TypeName] = "Binary.Type" then type binary else type any, type any), {"Name", "Type"})) & {{newColumnName ?? "@INDEX", Int64.Type}}), (if comparisonCriteria is list then comparisonCriteria else {comparisonCriteria}) & {newColumnName ?? "@INDEX"})

~~~

### CountRowsForEachGroup（グループ毎の行数をカウントします。）

CountRowsForEachGroup(`table` as table, `key` as anynonnull, optional `newColumnName` as nullable text) as table

~~~

= (table as table, key as anynonnull, optional newColumnName as nullable text) as table => Table.TransformColumnTypes(Table.ExpandTableColumn(Table.SelectColumns(Table.AddColumn(Table.Group(table, key, {{"_GTABLE", each _}}), newColumnName ?? "@COUNT", each Table.RowCount([_GTABLE]), Int64.Type), {"_GTABLE", newColumnName ?? "@COUNT"}), "_GTABLE", Table.ColumnNames(table), Table.ColumnNames(table)), Table.ToRows(Table.SelectColumns(Table.AddColumn(Table.Schema(table), "Type", each if [TypeName] = "Number.Type" then type number else if [TypeName] = "Currency.Type" then Currency.Type else if [TypeName] = "Int64.Type" then Int64.Type else if [TypeName] = "Percentage.Type" then Percentage.Type else if [TypeName] = "DateTime.Type" then type datetime else if [TypeName] = "Date.Type" then type date else if [TypeName] = "Time.Type" then type time else if [TypeName] = "DateTimeZone.Type" then type datetimezone else if [TypeName] = "Duration.Type" then type duration else if [TypeName] = "Text.Type" then type text else if [TypeName] = "Logical.Type" then type logical else if [TypeName] = "Binary.Type" then type binary else type any, type any), {"Name", "Type"})))

~~~

### IndexGroups（指定した並び順でグループに連番を振ります。）

IndexGroups(`table` as table, `key` as anynonnull, `comparisonCriteria` as anynonnull, optional `newColumnName` as nullable text) as table

~~~

= (table as table, key as anynonnull, comparisonCriteria as anynonnull, optional newColumnName as nullable text) as table => Table.Sort(Table.TransformColumnTypes(Table.ExpandTableColumn(Table.SelectColumns(Table.AddIndexColumn(Table.Sort(Table.Group(table, key, {{"_GTABLE", each _}}), List.Select((if comparisonCriteria is list then comparisonCriteria else {comparisonCriteria}) & (if key is list then key else {key}), each List.Contains(if key is list then key else {key}, if _ is list then _{0} else _))), newColumnName ?? "@INDEX", 1, 1, Int64.Type), {"_GTABLE", newColumnName ?? "@INDEX"}), "_GTABLE", Table.ColumnNames(table), Table.ColumnNames(table)), Table.ToRows(Table.SelectColumns(Table.AddColumn(Table.Schema(table), "Type", each if [TypeName] = "Number.Type" then type number else if [TypeName] = "Currency.Type" then Currency.Type else if [TypeName] = "Int64.Type" then Int64.Type else if [TypeName] = "Percentage.Type" then Percentage.Type else if [TypeName] = "DateTime.Type" then type datetime else if [TypeName] = "Date.Type" then type date else if [TypeName] = "Time.Type" then type time else if [TypeName] = "DateTimeZone.Type" then type datetimezone else if [TypeName] = "Duration.Type" then type duration else if [TypeName] = "Text.Type" then type text else if [TypeName] = "Logical.Type" then type logical else if [TypeName] = "Binary.Type" then type binary else type any, type any), {"Name", "Type"}))), (if comparisonCriteria is list then comparisonCriteria else {comparisonCriteria}) & {newColumnName ?? "@INDEX"})

~~~

### CountGroups（グループ数をカウントします。）

CountGroups(`table` as table, `key` as anynonnull, optional `newColumnName` as nullable text) as table

~~~

= (table as table, key as anynonnull, optional newColumnName as nullable text) as table => Table.AddColumn(table, newColumnName ?? "@COUNT", each Table.RowCount(Table.Group(table, key, {{"_GTABLE", each _}})), Int64.Type)

~~~

### IndexRows（各行に連番を振ります。）

IndexRows(`table` as table, `comparisonCriteria` as anynonnull, optional `newColumnName` as nullable text) as table

~~~

= (table as table, comparisonCriteria as anynonnull, optional newColumnName as nullable text) as table => Table.AddIndexColumn(Table.Sort(table, comparisonCriteria), newColumnName ?? "@INDEX", 1, 1, Int64.Type)

~~~

### CountRows（行数をカウントします。）

CountRows(`table` as table, optional `newColumnName` as nullable text) as table

~~~

= (table as table, optional newColumnName as nullable text) as table => Table.AddColumn(table, newColumnName ?? "@COUNT", each Table.RowCount(table), Int64.Type)

~~~