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new 80209ef Update outfile to support cos.md (#5129)
80209ef is described below
commit 80209ef1b66594a83071ca71e50bbf3d02a2ba1b
Author: 令狐少侠 <blackfox1...@163.com>
AuthorDate: Wed Dec 23 20:21:10 2020 +0800
Update outfile to support cos.md (#5129)
update doc to add how to export query result on cos
---
docs/zh-CN/administrator-guide/outfile.md | 30 ++++++++++++++++++++++++++++--
1 file changed, 28 insertions(+), 2 deletions(-)
diff --git a/docs/zh-CN/administrator-guide/outfile.md
b/docs/zh-CN/administrator-guide/outfile.md
index a60abf6..c40af67 100644
--- a/docs/zh-CN/administrator-guide/outfile.md
+++ b/docs/zh-CN/administrator-guide/outfile.md
@@ -30,7 +30,7 @@ under the License.
## 语法
-`SELECT INTO OUTFILE` 语句可以将查询结果导出到文件中。目前仅支持通过 Broker 进程导出到远端存储，如 HDFS，S3，BOS
上。语法如下
+`SELECT INTO OUTFILE` 语句可以将查询结果导出到文件中。目前仅支持通过 Broker 进程导出到远端存储，如
HDFS，S3，BOS，COS（腾讯云）上。语法如下
```
query_stmt
@@ -153,7 +153,33 @@ INTO OUTFILE "file_path"
最终生成文件如如果不大于 1GB，则为：`result_0.parquet`。
如果大于 1GB，则可能为 `result_0.parquet, result_1.parquet, ...`。
-
+
+4. 示例4
+
+ 将 select 语句的查询结果导出到文件 `cos://${bucket_name}/path/result.txt`。指定导出格式为 csv。
+ ```
+ select k1,k2,v1 from tbl1 limit 100000
+ into outfile "s3a://my_bucket/export/my_file_"
+ FORMAT AS CSV
+ PROPERTIES
+ (
+ "broker.name" = "hdfs_broker",
+ "broker.fs.s3a.access.key" = "xxx",
+ "broker.fs.s3a.secret.key" = "xxxx",
+ "broker.fs.s3a.endpoint" = "https://cos.xxxxxx.myqcloud.com/";,
+ "column_separator" = ",",
+ "line_delimiter" = "\n",
+ "max_file_size" = "1024MB"
+ )
+ ```
+ 最终生成文件如如果不大于 1GB，则为：`my_file_0.csv`。
+
+ 如果大于 1GB，则可能为 `my_file_0.csv, result_1.csv, ...`。
+
+ 在cos上验证
+ 1. 不存在的path会自动创建
+ 2. access.key/secret.key/endpoint需要和cos的同学确认。尤其是endpoint的值，不需要填写bucket_name。
+
## 返回结果
导出命令为同步命令。命令返回，即表示操作结束。
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