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docs(taosgen): support the generation of data with a specified proportion of NULL and NONE semantics #35332

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docs(taosgen): support the generation of data with a specified proportion of NULL and NONE semantics #35332

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docs(taosgen): support the generation of data with a specified propor…
YamingPei May 14, 2026
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docs(taosgen): optimize the description related to null/none
YamingPei May 14, 2026
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2 changes: 2 additions & 0 deletions docs/en/14-reference/02-tools/11-taosgen.md
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Expand Up @@ -230,6 +230,8 @@ Each column includes:
- random: Random generation.
- order: Sequential natural number growth (integer only).
- expression: Generated by expression (supports integer, float, double, and string types).
- null_ratio (float): Ratio of NULL values to generate, range [0.0, 1.0], default: 0.0. NULL represents an explicit null value and overwrites the column's latest value.
- none_ratio (float): Ratio of NONE values to generate, range [0.0, 1.0], default: 0.0. NONE represents missing data and does not overwrite the column's latest value (preserves previous value). The sum of null_ratio and none_ratio must not exceed 1.0.

##### Data Generation Methods

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2 changes: 2 additions & 0 deletions docs/zh/14-reference/02-tools/11-taosgen.md
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Expand Up @@ -238,6 +238,8 @@ taosgen -h 127.0.0.1 -c config.yaml
- random：随机方式生成。
- order：按自然数顺序增长，仅适用整数类型。
- expression：根据表达式生成。适用整数类型、浮点数类型 float、double 和字符类型。
- null_ratio（浮点数）：指定生成 NULL 值的比例，取值范围 [0.0, 1.0]，默认值为 0.0。NULL 表示空值，写入后替换该列的最新值为空。
- none_ratio（浮点数）：指定生成 NONE 值的比例，取值范围 [0.0, 1.0]，默认值为 0.0。NONE 表示数据缺失，写入后不替换该列的最新值，保留原有值。null_ratio 与 none_ratio 之和不得超过 1.0。
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##### 数据生成方式详解

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