diff --git a/docs/en/operations/settings/settings.md b/docs/en/operations/settings/settings.md
index 98ccdab0c2e..4fc5fad7aa9 100644
--- a/docs/en/operations/settings/settings.md
+++ b/docs/en/operations/settings/settings.md
@@ -2460,7 +2460,7 @@ Default value: `0`.
 
 ## union_default_mode {#union-default-mode}
 
-Sets a special mode for combining `SELECT` query results using the [UNION](../../sql-reference/statements/select/union-all.md) expression.
+Sets a mode for combining `SELECT` query results. The setting is only used when shared with [UNION](../../sql-reference/statements/select/union.md) without explicitly specifying the `UNION ALL` or `UNION DISTINCT`.
 
 Possible values:
 
@@ -2470,53 +2470,6 @@ Possible values:
 
 Default value: `'DISTINCT'`.
 
-**Example of using the 'DISTINCT' value**
-
-Query:
-
-```sql
-SET union_default_mode = 'DISTINCT';
-SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
-```
-
-Result:
-
-```text
-┌─1─┐
-│ 1 │
-└───┘
-┌─1─┐
-│ 2 │
-└───┘
-┌─1─┐
-│ 3 │
-└───┘
-```
-
-**Example of using the 'ALL' value**
-
-Query:
-
-```sql
-SET union_default_mode = 'ALL';
-SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
-```
-
-Result:
-
-```text
-┌─1─┐
-│ 1 │
-└───┘
-┌─1─┐
-│ 2 │
-└───┘
-┌─1─┐
-│ 2 │
-└───┘
-┌─1─┐
-│ 3 │
-└───┘
-```
+See examples in [UNION](../../sql-reference/statements/select/union.md).
 
 [Original article](https://clickhouse.tech/docs/en/operations/settings/settings/) <!-- hide -->
diff --git a/docs/en/sql-reference/statements/select/index.md b/docs/en/sql-reference/statements/select/index.md
index 60c769c4660..ed69198ed4d 100644
--- a/docs/en/sql-reference/statements/select/index.md
+++ b/docs/en/sql-reference/statements/select/index.md
@@ -46,7 +46,7 @@ Specifics of each optional clause are covered in separate sections, which are li
 -   [SELECT clause](#select-clause)
 -   [DISTINCT clause](../../../sql-reference/statements/select/distinct.md)
 -   [LIMIT clause](../../../sql-reference/statements/select/limit.md)
--   [UNION clause](../../../sql-reference/statements/select/union-all.md)
+-   [UNION clause](../../../sql-reference/statements/select/union.md)
 -   [INTO OUTFILE clause](../../../sql-reference/statements/select/into-outfile.md)
 -   [FORMAT clause](../../../sql-reference/statements/select/format.md)
 
diff --git a/docs/en/sql-reference/statements/select/union-all.md b/docs/en/sql-reference/statements/select/union.md
similarity index 51%
rename from docs/en/sql-reference/statements/select/union-all.md
rename to docs/en/sql-reference/statements/select/union.md
index 85c50450273..099c680d9a7 100644
--- a/docs/en/sql-reference/statements/select/union-all.md
+++ b/docs/en/sql-reference/statements/select/union.md
@@ -2,7 +2,7 @@
 toc_title: UNION
 ---
 
-# UNION ALL Clause {#union-all-clause}
+# UNION Clause {#union-clause}
 
 You can use `UNION ALL` to combine any number of `SELECT` queries by extending their results. Example:
 
@@ -25,16 +25,55 @@ Type casting is performed for unions. For example, if two queries being combined
 
 Queries that are parts of `UNION ALL` can’t be enclosed in round brackets. [ORDER BY](../../../sql-reference/statements/select/order-by.md) and [LIMIT](../../../sql-reference/statements/select/limit.md) are applied to separate queries, not to the final result. If you need to apply a conversion to the final result, you can put all the queries with `UNION ALL` in a subquery in the [FROM](../../../sql-reference/statements/select/from.md) clause.
 
-# UNION DISTINCT Clause {#union-distinct-clause}
+By default, `UNION` has the same behavior as `UNION DISTINCT`. The difference between `UNION ALL` and `UNION DISTINCT` is that `UNION DISTINCT` will do a distinct transform for union result, it is equivalent to `SELECT DISTINCT` from a subquery containing `UNION ALL`.
 
-The difference between `UNION ALL` and `UNION DISTINCT` is that `UNION DISTINCT` will do a distinct transform for union result, it is equivalent to `SELECT DISTINCT` from a subquery containing `UNION ALL`.
+If you use `UNION` without explicitly specifying `UNION ALL` or `UNION DISTINCT`, you can specify the union mode using the [union_default_mode](../../../operations/settings/settings.md#union-default-mode) setting. The setting values can be `ALL`, `DISTINCT` or an empty string. However, if you use `UNION` with `union_default_mode` setting to empty string, it will throw an exception. The following examples demonstrate the results of queries with different values setting.
 
-# UNION Clause {#union-clause}
+Query:
 
-By default, `UNION` has the same behavior as `UNION DISTINCT`, but you can specify union mode by [union_default_mode](../../../operations/settings/settings.md#union-default-mode) setting, values can be `ALL`, `DISTINCT` or an empty string. However, if you use `UNION` with `union_default_mode` setting to empty string, it will throw an exception.
+```sql
+SET union_default_mode = 'DISTINCT';
+SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
+```
 
-## Implementation Details {#implementation-details}
+Result:
+
+```text
+┌─1─┐
+│ 1 │
+└───┘
+┌─1─┐
+│ 2 │
+└───┘
+┌─1─┐
+│ 3 │
+└───┘
+```
+
+Query:
+
+```sql
+SET union_default_mode = 'ALL';
+SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
+```
+
+Result:
+
+```text
+┌─1─┐
+│ 1 │
+└───┘
+┌─1─┐
+│ 2 │
+└───┘
+┌─1─┐
+│ 2 │
+└───┘
+┌─1─┐
+│ 3 │
+└───┘
+```
 
 Queries that are parts of `UNION/UNION ALL/UNION DISTINCT` can be run simultaneously, and their results can be mixed together.
 
-[Original article](https://clickhouse.tech/docs/en/sql-reference/statements/select/union-all/) <!-- hide -->
+[Original article](https://clickhouse.tech/docs/en/sql-reference/statements/select/union/) <!-- hide -->
diff --git a/docs/es/sql-reference/statements/select/index.md b/docs/es/sql-reference/statements/select/index.md
index a5ff9820a2b..653f737b1d0 100644
--- a/docs/es/sql-reference/statements/select/index.md
+++ b/docs/es/sql-reference/statements/select/index.md
@@ -44,7 +44,7 @@ Los detalles de cada cláusula opcional se cubren en secciones separadas, que se
 -   [Cláusula HAVING](having.md)
 -   [Cláusula SELECT](#select-clause)
 -   [Cláusula LIMIT](limit.md)
--   [UNION ALL cláusula](union-all.md)
+-   [UNION ALL cláusula](union.md)
 
 ## SELECT Cláusula {#select-clause}
 
diff --git a/docs/es/sql-reference/statements/select/union-all.md b/docs/es/sql-reference/statements/select/union.md
similarity index 97%
rename from docs/es/sql-reference/statements/select/union-all.md
rename to docs/es/sql-reference/statements/select/union.md
index b2b45ba770e..d3aec34ba4b 100644
--- a/docs/es/sql-reference/statements/select/union-all.md
+++ b/docs/es/sql-reference/statements/select/union.md
@@ -3,7 +3,7 @@ machine_translated: true
 machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
 ---
 
-# UNION ALL Cláusula {#union-all-clause}
+# UNION Cláusula {#union-clause}
 
 Usted puede utilizar `UNION ALL` combinar cualquier número de `SELECT` consultas extendiendo sus resultados. Ejemplo:
 
diff --git a/docs/fa/sql-reference/statements/select/index.md b/docs/fa/sql-reference/statements/select/index.md
index 2ab3fea2ff1..90541b80636 100644
--- a/docs/fa/sql-reference/statements/select/index.md
+++ b/docs/fa/sql-reference/statements/select/index.md
@@ -44,7 +44,7 @@ SELECT [DISTINCT] expr_list
 -   [داشتن بند](having.md)
 -   [انتخاب بند](#select-clause)
 -   [بند محدود](limit.md)
--   [اتحادیه همه بند](union-all.md)
+-   [اتحادیه همه بند](union.md)
 
 ## انتخاب بند {#select-clause}
 
diff --git a/docs/fa/sql-reference/statements/select/union-all.md b/docs/fa/sql-reference/statements/select/union.md
similarity index 97%
rename from docs/fa/sql-reference/statements/select/union-all.md
rename to docs/fa/sql-reference/statements/select/union.md
index 3c4fe5c1546..03d723e2338 100644
--- a/docs/fa/sql-reference/statements/select/union-all.md
+++ b/docs/fa/sql-reference/statements/select/union.md
@@ -3,7 +3,7 @@ machine_translated: true
 machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
 ---
 
-# اتحادیه همه بند {#union-all-clause}
+# اتحادیه همه بند {#union-clause}
 
 شما می توانید استفاده کنید `UNION ALL` برای ترکیب هر تعداد از `SELECT` نمایش داده شد با گسترش نتایج خود را. مثال:
 
diff --git a/docs/fr/sql-reference/statements/select/index.md b/docs/fr/sql-reference/statements/select/index.md
index 5073469e651..1d53ae80eb4 100644
--- a/docs/fr/sql-reference/statements/select/index.md
+++ b/docs/fr/sql-reference/statements/select/index.md
@@ -44,7 +44,7 @@ Spécificités de chaque clause facultative, sont couverts dans des sections dis
 -   [Clause HAVING](having.md)
 -   [Clause SELECT](#select-clause)
 -   [Clause LIMIT](limit.md)
--   [Clause UNION ALL](union-all.md)
+-   [Clause UNION ALL](union.md)
 
 ## Clause SELECT {#select-clause}
 
diff --git a/docs/fr/sql-reference/statements/select/union-all.md b/docs/fr/sql-reference/statements/select/union.md
similarity index 97%
rename from docs/fr/sql-reference/statements/select/union-all.md
rename to docs/fr/sql-reference/statements/select/union.md
index 63e9987965f..9ae65ebcf72 100644
--- a/docs/fr/sql-reference/statements/select/union-all.md
+++ b/docs/fr/sql-reference/statements/select/union.md
@@ -3,7 +3,7 @@ machine_translated: true
 machine_translated_rev: 72537a2d527c63c07aa5d2361a8829f3895cf2bd
 ---
 
-# Clause UNION ALL {#union-all-clause}
+# Clause UNION ALL {#union-clause}
 
 Vous pouvez utiliser `UNION ALL` à combiner `SELECT` requêtes en étendant leurs résultats. Exemple:
 
diff --git a/docs/ja/sql-reference/statements/select/union-all.md b/docs/ja/sql-reference/statements/select/union-all.md
deleted file mode 120000
index 837caae2698..00000000000
--- a/docs/ja/sql-reference/statements/select/union-all.md
+++ /dev/null
@@ -1 +0,0 @@
-../../../../en/sql-reference/statements/select/union-all.md
\ No newline at end of file
diff --git a/docs/ja/sql-reference/statements/select/union.md b/docs/ja/sql-reference/statements/select/union.md
new file mode 100644
index 00000000000..0eb8db0be7a
--- /dev/null
+++ b/docs/ja/sql-reference/statements/select/union.md
@@ -0,0 +1 @@
+../../../../en/sql-reference/statements/select/union.md
\ No newline at end of file
diff --git a/docs/ru/operations/settings/settings.md b/docs/ru/operations/settings/settings.md
index d94f7ddfae8..00f59d9ce48 100644
--- a/docs/ru/operations/settings/settings.md
+++ b/docs/ru/operations/settings/settings.md
@@ -2326,7 +2326,7 @@ SELECT number FROM numbers(3) FORMAT JSONEachRow;
 
 ## union_default_mode {#union-default-mode}
 
-Устанавливает особый режим объединения результатов `SELECT` запросов, используя выражение [UNION](../../sql-reference/statements/select/union-all.md).
+Устанавливает режим объединения результатов `SELECT` запросов. Настройка используется только при совместном использовании с [UNION](../../sql-reference/statements/select/union.md) без явного указания `UNION ALL` или `UNION DISTINCT`.
 
 Возможные значения:
 
@@ -2336,53 +2336,6 @@ SELECT number FROM numbers(3) FORMAT JSONEachRow;
 
 Значение по умолчанию: `'DISTINCT'`.
 
-**Пример использования 'DISTINCT' в качестве значения настройки**
-
-Запрос:
-
-```sql
-SET union_default_mode = 'DISTINCT';
-SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
-```
-
-Результат:
-
-```text
-┌─1─┐
-│ 1 │
-└───┘
-┌─1─┐
-│ 2 │
-└───┘
-┌─1─┐
-│ 3 │
-└───┘
-```
-
-**Пример использования 'ALL' в качестве значения настройки**
-
-Запрос:
-
-```sql
-SET union_default_mode = 'ALL';
-SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
-```
-
-Результат:
-
-```text
-┌─1─┐
-│ 1 │
-└───┘
-┌─1─┐
-│ 2 │
-└───┘
-┌─1─┐
-│ 2 │
-└───┘
-┌─1─┐
-│ 3 │
-└───┘
-```
+Смотрите примеры в разделе [UNION](../../sql-reference/statements/select/union.md).
 
 [Оригинальная статья](https://clickhouse.tech/docs/ru/operations/settings/settings/) <!--hide-->
diff --git a/docs/ru/sql-reference/statements/select/index.md b/docs/ru/sql-reference/statements/select/index.md
index c2e05f05079..bf4ae44a6f1 100644
--- a/docs/ru/sql-reference/statements/select/index.md
+++ b/docs/ru/sql-reference/statements/select/index.md
@@ -44,7 +44,7 @@ SELECT [DISTINCT] expr_list
 -   [Секция SELECT](#select-clause)
 -   [Секция DISTINCT](distinct.md)
 -   [Секция LIMIT](limit.md)
--   [Секция UNION ALL](union-all.md)
+-   [Секция UNION ALL](union.md)
 -   [Секция INTO OUTFILE](into-outfile.md)
 -   [Секция FORMAT](format.md)
 
diff --git a/docs/ru/sql-reference/statements/select/union-all.md b/docs/ru/sql-reference/statements/select/union.md
similarity index 53%
rename from docs/ru/sql-reference/statements/select/union-all.md
rename to docs/ru/sql-reference/statements/select/union.md
index 72fc7299b30..4d7d96a23db 100644
--- a/docs/ru/sql-reference/statements/select/union-all.md
+++ b/docs/ru/sql-reference/statements/select/union.md
@@ -1,8 +1,8 @@
 ---
-toc_title: UNION ALL
+toc_title: UNION
 ---
 
-# Секция UNION ALL {#union-all-clause}
+# Секция UNION {#union-clause}
 
 Вы можете использовать `UNION ALL` чтобы объединить любое количество `SELECT` запросы путем расширения их результатов. Пример:
 
@@ -25,16 +25,55 @@ SELECT CounterID, 2 AS table, sum(Sign) AS c
 
 Запросы, которые являются частью `UNION ALL` не могут быть заключен в круглые скобки. [ORDER BY](order-by.md) и [LIMIT](limit.md) применяются к отдельным запросам, а не к конечному результату. Если вам нужно применить преобразование к конечному результату, вы можете разместить все объединенные с помощью `UNION ALL` запросы в подзапрос в секции [FROM](from.md).
 
-# Секция UNION DISTINCT {#union-distinct-clause}
+По умолчанию, `UNION` ведет себя так же, как и `UNION DISTINCT`. Разница между `UNION ALL` и `UNION DISTINCT` в том, что `UNION DISTINCT` выполняет явное преобразование для результата объединения. Это равнозначно выражению `SELECT DISTINCT` из подзапроса, содержащего `UNION ALL`.
 
-Разница между `UNION ALL` и `UNION DISTINCT` в том, что `UNION DISTINCT` выполняет явное преобразование для результата объединения. Это равнозначно выражению `SELECT DISTINCT` из подзапроса, содержащего `UNION ALL`.
+Если используете `UNION` без явного указания `UNION ALL` или `UNION DISTINCT`, то вы можете указать режим объединения с помощью настройки [union_default_mode](../../../operations/settings/settings.md#union-default-mode), значениями которой могут быть `ALL`, `DISTINCT` или пустая строка. Однако если вы используете `UNION` с настройкой `union_default_mode`, значением которой является пустая строка, то будет сгенерировано исключение. В следующих примерах продемонстрированы результаты запросов при разных значениях настройки.
 
-# Секция UNION {#union-clause}
+Запрос:
 
-По умолчанию, `UNION` ведет себя так же, как и `UNION DISTINCT`. Но вы можете указать особый режим объединения с помощью настройки [union_default_mode](../../../operations/settings/settings.md#union-default-mode), значениями которой могут быть `ALL`, `DISTINCT` или пустая строка. Однако если вы используете `UNION` с настройкой `union_default_mode`, значением которой является пустая строка, то будет сгенерировано исключение.
+```sql
+SET union_default_mode = 'DISTINCT';
+SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
+```
 
-## Детали реализации {#implementation-details}
+Результат:
+
+```text
+┌─1─┐
+│ 1 │
+└───┘
+┌─1─┐
+│ 2 │
+└───┘
+┌─1─┐
+│ 3 │
+└───┘
+```
+
+Запрос:
+
+```sql
+SET union_default_mode = 'ALL';
+SELECT 1 UNION SELECT 2 UNION SELECT 3 UNION SELECT 2;
+```
+
+Результат:
+
+```text
+┌─1─┐
+│ 1 │
+└───┘
+┌─1─┐
+│ 2 │
+└───┘
+┌─1─┐
+│ 2 │
+└───┘
+┌─1─┐
+│ 3 │
+└───┘
+```
 
 Запросы, которые являются частью `UNION ALL`, выполняются параллельно, и их результаты могут быть смешаны вместе.
 
-[Оригинальная статья](https://clickhouse.tech/docs/ru/sql-reference/statements/select/union-all/) <!-- hide -->
+[Оригинальная статья](https://clickhouse.tech/docs/ru/sql-reference/statements/select/union/) <!-- hide -->
diff --git a/docs/tr/sql-reference/statements/select/union-all.md b/docs/tr/sql-reference/statements/select/union-all.md
deleted file mode 120000
index 837caae2698..00000000000
--- a/docs/tr/sql-reference/statements/select/union-all.md
+++ /dev/null
@@ -1 +0,0 @@
-../../../../en/sql-reference/statements/select/union-all.md
\ No newline at end of file
diff --git a/docs/tr/sql-reference/statements/select/union.md b/docs/tr/sql-reference/statements/select/union.md
new file mode 100644
index 00000000000..0eb8db0be7a
--- /dev/null
+++ b/docs/tr/sql-reference/statements/select/union.md
@@ -0,0 +1 @@
+../../../../en/sql-reference/statements/select/union.md
\ No newline at end of file
diff --git a/docs/zh/sql-reference/statements/select/index.md b/docs/zh/sql-reference/statements/select/index.md
index cdfd64ff190..689a4f91a0c 100644
--- a/docs/zh/sql-reference/statements/select/index.md
+++ b/docs/zh/sql-reference/statements/select/index.md
@@ -46,7 +46,7 @@ SELECT [DISTINCT] expr_list
 -   [SELECT 子句](#select-clause)
 -   [DISTINCT 子句](../../../sql-reference/statements/select/distinct.md)
 -   [LIMIT 子句](../../../sql-reference/statements/select/limit.md)
--   [UNION ALL 子句](../../../sql-reference/statements/select/union-all.md)
+-   [UNION ALL 子句](../../../sql-reference/statements/select/union.md)
 -   [INTO OUTFILE 子句](../../../sql-reference/statements/select/into-outfile.md)
 -   [FORMAT 子句](../../../sql-reference/statements/select/format.md)
 
diff --git a/docs/zh/sql-reference/statements/select/union-all.md b/docs/zh/sql-reference/statements/select/union.md
similarity index 97%
rename from docs/zh/sql-reference/statements/select/union-all.md
rename to docs/zh/sql-reference/statements/select/union.md
index d32ae896f55..1d88f9674c8 100644
--- a/docs/zh/sql-reference/statements/select/union-all.md
+++ b/docs/zh/sql-reference/statements/select/union.md
@@ -2,7 +2,7 @@
 toc_title: UNION ALL
 ---
 
-# UNION ALL子句 {#union-all-clause}
+# UNION ALL子句 {#union-clause}
 
 你可以使用 `UNION ALL` 结合任意数量的 `SELECT` 来扩展其结果。 示例: