diff --git a/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md b/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md index a3a9b88ed..53d9b6d6b 100644 --- a/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md +++ b/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md @@ -27,7 +27,7 @@ IoTDB provides users with a variety of ways to insert real-time data, such as di NOTE： This section mainly introduces the use of [INSERT SQL statement](../SQL-Manual/SQL-Manual_apache#insert-data) for real-time data import in the scenario. -Writing a repeat timestamp covers the original timestamp data, which can be regarded as updated data. +When writing data with duplicate timestamps, the existing data with the same timestamp will be overwritten directly, which is equivalent to data update; however, if the written value is NULL, the operation will not take effect and the original field value will not be overwritten. ### 1.1 Use of INSERT Statements diff --git a/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md b/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md index a0379a876..564820403 100644 --- a/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md +++ b/src/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md @@ -27,7 +27,7 @@ IoTDB provides users with a variety of ways to insert real-time data, such as di NOTE： This section mainly introduces the use of [INSERT SQL statement](../SQL-Manual/SQL-Manual_timecho#insert-data) for real-time data import in the scenario. -Writing a repeat timestamp covers the original timestamp data, which can be regarded as updated data. +When writing data with duplicate timestamps, the existing data with the same timestamp will be overwritten directly, which is equivalent to data update; however, if the written value is NULL, the operation will not take effect and the original field value will not be overwritten. ### 1.1 Use of INSERT Statements diff --git a/src/UserGuide/V1.3.x/Basic-Concept/Write-Data.md b/src/UserGuide/V1.3.x/Basic-Concept/Write-Data.md index 7e29cacc8..f6f3e12d8 100644 --- a/src/UserGuide/V1.3.x/Basic-Concept/Write-Data.md +++ b/src/UserGuide/V1.3.x/Basic-Concept/Write-Data.md @@ -27,7 +27,7 @@ IoTDB provides users with a variety of ways to insert real-time data, such as di NOTE： This section mainly introduces the use of [INSERT SQL statement](../SQL-Manual/SQL-Manual.md#insert-data) for real-time data import in the scenario. -Writing a repeat timestamp covers the original timestamp data, which can be regarded as updated data. +When writing data with duplicate timestamps, the existing data with the same timestamp will be overwritten directly, which is equivalent to data update; however, if the written value is NULL, the operation will not take effect and the original field value will not be overwritten. ### Use of INSERT Statements diff --git a/src/UserGuide/dev-1.3/Basic-Concept/Write-Data.md b/src/UserGuide/dev-1.3/Basic-Concept/Write-Data.md index 7e29cacc8..f6f3e12d8 100644 --- a/src/UserGuide/dev-1.3/Basic-Concept/Write-Data.md +++ b/src/UserGuide/dev-1.3/Basic-Concept/Write-Data.md @@ -27,7 +27,7 @@ IoTDB provides users with a variety of ways to insert real-time data, such as di NOTE： This section mainly introduces the use of [INSERT SQL statement](../SQL-Manual/SQL-Manual.md#insert-data) for real-time data import in the scenario. -Writing a repeat timestamp covers the original timestamp data, which can be regarded as updated data. +When writing data with duplicate timestamps, the existing data with the same timestamp will be overwritten directly, which is equivalent to data update; however, if the written value is NULL, the operation will not take effect and the original field value will not be overwritten. ### Use of INSERT Statements diff --git a/src/UserGuide/latest/Basic-Concept/Write-Data_apache.md b/src/UserGuide/latest/Basic-Concept/Write-Data_apache.md index 264832ff3..5085b033a 100644 --- a/src/UserGuide/latest/Basic-Concept/Write-Data_apache.md +++ b/src/UserGuide/latest/Basic-Concept/Write-Data_apache.md @@ -27,7 +27,7 @@ IoTDB provides users with a variety of ways to insert real-time data, such as di NOTE： This section mainly introduces the use of [INSERT SQL statement](../SQL-Manual/SQL-Manual_apache#insert-data) for real-time data import in the scenario. -Writing a repeat timestamp covers the original timestamp data, which can be regarded as updated data. +When writing data with duplicate timestamps, the existing data with the same timestamp will be overwritten directly, which is equivalent to data update; however, if the written value is NULL, the operation will not take effect and the original field value will not be overwritten. ### 1.1 Use of INSERT Statements diff --git a/src/UserGuide/latest/Basic-Concept/Write-Data_timecho.md b/src/UserGuide/latest/Basic-Concept/Write-Data_timecho.md index 75cee861d..7831c7167 100644 --- a/src/UserGuide/latest/Basic-Concept/Write-Data_timecho.md +++ b/src/UserGuide/latest/Basic-Concept/Write-Data_timecho.md @@ -27,7 +27,7 @@ IoTDB provides users with a variety of ways to insert real-time data, such as di NOTE： This section mainly introduces the use of [INSERT SQL statement](../SQL-Manual/SQL-Manual_timecho#insert-data) for real-time data import in the scenario. -Writing a repeat timestamp covers the original timestamp data, which can be regarded as updated data. +When writing data with duplicate timestamps, the existing data with the same timestamp will be overwritten directly, which is equivalent to data update; however, if the written value is NULL, the operation will not take effect and the original field value will not be overwritten. ### 1.1 Use of INSERT Statements diff --git a/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md b/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md index feb731b34..2a1254bd4 100644 --- a/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md +++ b/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_apache.md @@ -27,7 +27,7 @@ IoTDB 为用户提供多种插入实时数据的方式，例如在 [Cli/Shell 本节主要为您介绍实时数据接入的 INSERT 语句在场景中的实际使用示例，有关 INSERT SQL 语句的详细语法请参见本文 [INSERT 语句](../SQL-Manual/SQL-Manual.md#写入数据) 节。 -注：写入重复时间戳的数据则原时间戳数据被覆盖，可视为更新数据。 +注：写入重复时间戳的数据时，会直接覆盖原有同时间戳数据，等效于数据更新；但若写入值为 NULL，则不生效，不会覆盖原有字段值。 ### 1.1 使用 INSERT 语句 diff --git a/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md b/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md index c1e21574a..03e8aab21 100644 --- a/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md +++ b/src/zh/UserGuide/Master/Tree/Basic-Concept/Write-Data_timecho.md @@ -27,7 +27,7 @@ IoTDB 为用户提供多种插入实时数据的方式，例如在 [Cli/Shell 本节主要为您介绍实时数据接入的 INSERT 语句在场景中的实际使用示例，有关 INSERT SQL 语句的详细语法请参见本文 [INSERT 语句](../SQL-Manual/SQL-Manual.md#写入数据) 节。 -注：写入重复时间戳的数据则原时间戳数据被覆盖，可视为更新数据。 +注：写入重复时间戳的数据时，会直接覆盖原有同时间戳数据，等效于数据更新；但若写入值为 NULL，则不生效，不会覆盖原有字段值。 ### 1.1 使用 INSERT 语句 diff --git a/src/zh/UserGuide/V1.3.x/Basic-Concept/Write-Data.md b/src/zh/UserGuide/V1.3.x/Basic-Concept/Write-Data.md index 73b1df2f8..46f0c7550 100644 --- a/src/zh/UserGuide/V1.3.x/Basic-Concept/Write-Data.md +++ b/src/zh/UserGuide/V1.3.x/Basic-Concept/Write-Data.md @@ -27,7 +27,7 @@ IoTDB 为用户提供多种插入实时数据的方式，例如在 [Cli/Shell 本节主要为您介绍实时数据接入的 INSERT 语句在场景中的实际使用示例，有关 INSERT SQL 语句的详细语法请参见本文 [INSERT 语句](../SQL-Manual/SQL-Manual.md#写入数据) 节。 -注：写入重复时间戳的数据则原时间戳数据被覆盖，可视为更新数据。 +注：写入重复时间戳的数据时，会直接覆盖原有同时间戳数据，等效于数据更新；但若写入值为 NULL，则不生效，不会覆盖原有字段值。 ### 使用 INSERT 语句 diff --git a/src/zh/UserGuide/dev-1.3/Basic-Concept/Write-Data.md b/src/zh/UserGuide/dev-1.3/Basic-Concept/Write-Data.md index 73b1df2f8..46f0c7550 100644 --- a/src/zh/UserGuide/dev-1.3/Basic-Concept/Write-Data.md +++ b/src/zh/UserGuide/dev-1.3/Basic-Concept/Write-Data.md @@ -27,7 +27,7 @@ IoTDB 为用户提供多种插入实时数据的方式，例如在 [Cli/Shell 本节主要为您介绍实时数据接入的 INSERT 语句在场景中的实际使用示例，有关 INSERT SQL 语句的详细语法请参见本文 [INSERT 语句](../SQL-Manual/SQL-Manual.md#写入数据) 节。 -注：写入重复时间戳的数据则原时间戳数据被覆盖，可视为更新数据。 +注：写入重复时间戳的数据时，会直接覆盖原有同时间戳数据，等效于数据更新；但若写入值为 NULL，则不生效，不会覆盖原有字段值。 ### 使用 INSERT 语句 diff --git a/src/zh/UserGuide/latest/Basic-Concept/Write-Data_apache.md b/src/zh/UserGuide/latest/Basic-Concept/Write-Data_apache.md index feb731b34..2a1254bd4 100644 --- a/src/zh/UserGuide/latest/Basic-Concept/Write-Data_apache.md +++ b/src/zh/UserGuide/latest/Basic-Concept/Write-Data_apache.md @@ -27,7 +27,7 @@ IoTDB 为用户提供多种插入实时数据的方式，例如在 [Cli/Shell 本节主要为您介绍实时数据接入的 INSERT 语句在场景中的实际使用示例，有关 INSERT SQL 语句的详细语法请参见本文 [INSERT 语句](../SQL-Manual/SQL-Manual.md#写入数据) 节。 -注：写入重复时间戳的数据则原时间戳数据被覆盖，可视为更新数据。 +注：写入重复时间戳的数据时，会直接覆盖原有同时间戳数据，等效于数据更新；但若写入值为 NULL，则不生效，不会覆盖原有字段值。 ### 1.1 使用 INSERT 语句 diff --git a/src/zh/UserGuide/latest/Basic-Concept/Write-Data_timecho.md b/src/zh/UserGuide/latest/Basic-Concept/Write-Data_timecho.md index c1e21574a..03e8aab21 100644 --- a/src/zh/UserGuide/latest/Basic-Concept/Write-Data_timecho.md +++ b/src/zh/UserGuide/latest/Basic-Concept/Write-Data_timecho.md @@ -27,7 +27,7 @@ IoTDB 为用户提供多种插入实时数据的方式，例如在 [Cli/Shell 本节主要为您介绍实时数据接入的 INSERT 语句在场景中的实际使用示例，有关 INSERT SQL 语句的详细语法请参见本文 [INSERT 语句](../SQL-Manual/SQL-Manual.md#写入数据) 节。 -注：写入重复时间戳的数据则原时间戳数据被覆盖，可视为更新数据。 +注：写入重复时间戳的数据时，会直接覆盖原有同时间戳数据，等效于数据更新；但若写入值为 NULL，则不生效，不会覆盖原有字段值。 ### 1.1 使用 INSERT 语句