fcd15edbf9
```
EXPORT TABLE xxx
...
PROPERTIES
(
"label" = "mylabel",
...
);
```
And than user can use label to get the info by SHOW EXPORT stmt:
```
show export from db where label="mylabel";
```
For compatibility, if not specified, a random label will be used. And for history jobs, the label will be "export_job_id";
Not like LOAD stmt, here we specify label in `properties` because this will not cause grammatical conflicts,
and there is no need to modify the meta version of the metadata.
67 lines
2.1 KiB
Markdown
67 lines
2.1 KiB
Markdown
---
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{
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"title": "SHOW EXPORT",
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"language": "zh-CN"
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}
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---
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<!--
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Licensed to the Apache Software Foundation (ASF) under one
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or more contributor license agreements. See the NOTICE file
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distributed with this work for additional information
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regarding copyright ownership. The ASF licenses this file
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to you under the Apache License, Version 2.0 (the
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"License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing,
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software distributed under the License is distributed on an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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KIND, either express or implied. See the License for the
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specific language governing permissions and limitations
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under the License.
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-->
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# SHOW EXPORT
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## description
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该语句用于展示指定的导出任务的执行情况
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语法：
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SHOW EXPORT
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[FROM db_name]
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[
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WHERE
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[ID = your_job_id]
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[STATE = ["PENDING"|"EXPORTING"|"FINISHED"|"CANCELLED"]]
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[LABEL = your_label]
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]
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[ORDER BY ...]
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[LIMIT limit];
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说明：
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1) 如果不指定 db_name，使用当前默认db
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2) 如果指定了 STATE，则匹配 EXPORT 状态
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3) 可以使用 ORDER BY 对任意列组合进行排序
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4) 如果指定了 LIMIT，则显示 limit 条匹配记录。否则全部显示
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## example
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1. 展示默认 db 的所有导出任务
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SHOW EXPORT;
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2. 展示指定 db 的导出任务，按 StartTime 降序排序
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SHOW EXPORT FROM example_db ORDER BY StartTime DESC;
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3. 展示指定 db 的导出任务，state 为 "exporting", 并按 StartTime 降序排序
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SHOW EXPORT FROM example_db WHERE STATE = "exporting" ORDER BY StartTime DESC;
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4. 展示指定db，指定job_id的导出任务
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SHOW EXPORT FROM example_db WHERE ID = job_id;
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5. 展示指定db，指定label的导出任务
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SHOW EXPORT FROM example_db WHERE LABEL = "mylabel";
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## keyword
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SHOW,EXPORT
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