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描述表-GET ddl/database /:db/table /:table
Description
描述一个 HCatalog 表。通常返回一个简单的列列表(使用“ desc table”),但是扩展格式将显示更多信息(使用“ show table extended like”)。
URL
http://
* www.myserver.com * /templeton/v1/ddl/database/
*:db * /table/
*:table *
http://
* www.myserver.com * /templeton/v1/ddl/database/
*:db * /table/
*:table * ?format=extended
Parameters
Name | Description | Required? | Default |
---|---|---|---|
:db | 数据库名称 | Required | None |
:table | 表名 | Required | None |
format | 设置“ format=extended ”以查看其他信息(使用“显示表扩展为”) |
Optional | Not extended |
standard parameters也受支持。
Results
Name | Description |
---|---|
columns | 列名称和类型的列表 |
database | 数据库名称 |
table | 表名 |
分区 (仅扩展) | 如果表已分区,则为 True |
位置 (仅扩展) | 桌子的位置 |
outputFormat (仅扩展) | Output format |
所有者 (仅扩展) | 所有者的用户名 |
partitionColumns (仅扩展) | 分区列列表 |
inputFormat (仅扩展) | Input format |
Example
Curl 命令(简单)
% curl -s 'http://localhost:50111/templeton/v1/ddl/database/default/table/my_table?user.name=ctdean'
JSON 输出(简单)
{
"columns": [
{
"name": "id",
"type": "bigint"
},
{
"name": "user",
"comment": "The user name",
"type": "string"
},
{
"name": "my_p",
"type": "string"
},
{
"name": "my_q",
"type": "string"
}
],
"database": "default",
"table": "my_table"
}
Curl 命令(扩展)
% curl -s 'http://localhost:50111/templeton/v1/ddl/database/default/table/test_table?user.name=ctdean&format=extended'
JSON 输出(扩展)
{
"partitioned": true,
"location": "hdfs://ip-10-77-6-151.ec2.internal:8020/apps/hive/warehouse/test_table",
"outputFormat": "org.apache.hadoop.hive.ql.io.RCFileOutputFormat",
"columns": [
{
"name": "id",
"type": "bigint"
},
{
"name": "price",
"comment": "The unit price",
"type": "float"
}
],
"owner": "ctdean",
"partitionColumns": [
{
"name": "country",
"type": "string"
}
],
"inputFormat": "org.apache.hadoop.hive.ql.io.RCFileInputFormat",
"database": "default",
"table": "test_table"
}
JSON 输出(错误)
{
"error": "Table xtest_table does not exist",
"errorCode": 404,
"database": "default",
"table": "xtest_table"
}
Navigation Links
上一个:GET ddl/database/:db/table下一个:PUT ddl/database/:db/table/:table
一般:DDL Resources – WebHCat Reference – WebHCat Manual – HCatalog Manual – Hive Wiki 主页 – Hive 项目 site