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docs: keepColumnName notes

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facetosea 2024-01-18 17:31:23 +08:00
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docs/en/14-reference/12-config/index.md
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@ -226,9 +226,10 @@ Please note the `taoskeeper` needs to be installed and running to create the `lo
| Attribute | Description |
| ------------- | --------------------------------------------------------------------------------------------------------------- |
| Applicable | Client only |
| Meaning | When the Last, First, LastRow function is queried, whether the returned column name contains the function name. |
| Value Range | 0 means including the function name, 1 means not including the function name. |
| Meaning | When the Last, First, and LastRow functions are queried and no alias is specified, the alias is automatically set to the column name (excluding the function name). Therefore, if the order by clause refers to the column name, it will automatically refer to the function corresponding to the column. |
| Value Range | 1 means automatically setting the alias to the column name (excluding the function name), 0 means not automatically setting the alias. |
| Default Value | 0 |
| Notes | When multiple of the above functions act on the same column at the same time and no alias is specified, if the order by clause refers to the column name, column selection ambiguous will occur because the aliases of multiple columns are the same. |
## Locale Parameters

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docs/zh/14-reference/12-config/index.md
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@ -215,9 +215,10 @@ taos -C
| 属性 | 说明 |
| -------- | ----------------------------------------------------------- |
| 适用范围 | 仅客户端适用 |
| 含义 | Last、First、LastRow 函数查询时，返回的列名是否包含函数名。 |
| 取值范围 | 0 表示包含函数名，1 表示不包含函数名。 |
| 含义 | Last、First、LastRow 函数查询且未指定别名时，自动设置别名为列名（不含函数名），因此 order by 子句如果引用了该列名将自动引用该列对应的函数 |
| 取值范围 | 1 表示自动设置别名为列名(不包含函数名), 0 表示不自动设置别名。 |
| 缺省值 | 0 |
| 补充说明 | 当同时出现多个上述函数作用于同一列且未指定别名时，如果 order by 子句引用了该列名，将会因为多列别名相同引发列选择冲突|
### countAlwaysReturnValue