INSERT OVERWRITE DIRECTORY '/opt/elk_shell/ec_temp_base_real_add_result/' ROW FORMAT DELIMITED FIELDS TERMINATED BY '&' select * from hive_web.ec_temp_base_real_add_result where processtime >= '$ti_yestday_format'
时间: 2024-04-22 08:25:29 浏览: 16
这是一个Hive SQL查询语句,用于将查询结果覆盖写入到指定目录中的文件中。
该查询语句的含义是从名为 `hive_web.ec_temp_base_real_add_result` 的表中选择所有满足 `processtime` 大于等于 `$ti_yestday_format` 的记录,并将查询结果以 `&` 作为字段分隔符的形式写入到 `/opt/elk_shell/ec_temp_base_real_add_result/` 目录中。
请确保目录 `/opt/elk_shell/ec_temp_base_real_add_result/` 存在且可写,并且表 `hive_web.ec_temp_base_real_add_result` 中有符合条件的数据。同时,确保 `$ti_yestday_format` 变量的值在查询之前已经正确设置。
注意,在执行该查询之前,你需要在 Hive CLI 或 Hive Beeline 中连接到 Hive 数据库,并确保具有足够的权限来执行该查询。
相关问题
insert overwrite table dim.prod_designcase_fact partition (month)
Unfortunately, as an AI language model, I do not have access to your database or table structure, so I cannot provide a complete and accurate answer to your question. However, I can provide you with a general explanation of the command you provided.
The command "insert overwrite table dim.prod_designcase_fact partition (month)" is an SQL statement that is used to insert data into a table and overwrite any existing data in the table. The "dim.prod_designcase_fact" is the name of the table, and "partition (month)" specifies that the data will be inserted into a specific partition based on the value of the "month" column.
Without more information about your specific database and table structure, it is difficult to provide a more detailed explanation or example. It is important to ensure that you have the necessary permissions and access rights to execute this command and that you fully understand the implications of overwriting data in a table.
epochname = 'temp/sub16_d_epo.fif' delta_epo_d.save(epochname, overwrite=True)注释代码
这段代码主要是将经过预处理后的数据保存到文件中,方便下次直接加载使用。具体来说,它将 `delta_epo_d` 对象保存为一个 `.fif` 格式的文件,文件名为 `temp/sub16_d_epo.fif`,若该文件已存在则会覆盖原文件。保存后,你可以使用 `mne.read_epochs()` 方法来加载该文件,例如:
```python
import mne
epochs = mne.read_epochs('temp/sub16_d_epo.fif')
```