目录
1. 查询创建表信息（show create table）
2. 查询表的字段信息（desc）
3. 查看表的详细属性信息（desc formatted）
4. 查看表的详细信息（describe extended）
5. 查看表的partitions信息（show partitions ）
1. 查询创建表信息（show create table）
里面有delemited信息
hive> show create table alpha_sales_staff_info;
OK
CREATE TABLE `alpha_sales_staff_info`(
`staff` string COMMENT '客服pin',
`mall_id` string COMMENT '服务商ID',
`brand_name` string COMMENT '品牌名称',
`category` string COMMENT '品类名称',
`level` string COMMENT '客服评级',
`group` string COMMENT 'AB test组别')
PARTITIONED BY (
`dt` string)
ROW FORMAT DELIMITED
FIELDS TERMINATED BY ' '
LINES TERMINATED BY '\n'
STORED AS INPUTFORMAT
'org.apache.hadoop.mapred.TextInputFormat'
OUTPUTFORMAT
'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
LOCATION
'hdfs://ns7/user/mart_ai/app.db/alpha_sales_staff_info'
TBLPROPERTIES (
'mart_name'='mart_ai',
'transient_lastDdlTime'='1542188102')
Time taken: 0.149 seconds, Fetched: 21 row(s)
2. 查询表的字段信息（desc）
hive> desc alpha_sales_staff_info;
OK
staff string 客服pin
mall_id string 服务商ID
brand_name string 品牌名称
category string 品类名称
level string 客服评级
group string AB test组别
dt string
# Partition Information
# col_name data_type comment
dt string
Time taken: 0.053 seconds, Fetched: 12 row(s)
3. 查看表的详细属性信息（desc formatted）
hive> desc formatted alpha_sales_staff_info;
# col_name data_type comment
staff string 客服pin
mall_id string 服务商ID
brand_name string 品牌名称
category string 品类名称
level string 客服评级
group string AB test组别
# Partition Information
# col_name data_type comment
dt string
# Detailed Table Information
Database: app
Owner: mart_ai
CreateTime: Wed Nov 14 17:35:02 CST 2018
LastAccessTime: UNKNOWN
Retention: 0
Location: hdfs://ns7/user/mart_ai/app.db/alpha_sales_staff_info
Table Type: MANAGED_TABLE
Table Parameters:
mart_name mart_ai
transient_lastDdlTime 1542188102
# Storage Information
SerDe Library: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe
InputFormat: org.apache.hadoop.mapred.TextInputFormat
OutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat
Compressed: No
Num Buckets: -1
Bucket Columns: []
Sort Columns: []
Storage Desc Params:
field.delim
line.delim \n
serialization.format
Time taken: 0.082 seconds, Fetched: 38 row(s)
4. 查看表的详细信息（describe extended）
hive> describe extended alpha_sales_staff_info;
OK
staff string 客服pin
mall_id string 服务商ID
brand_name string 品牌名称
category string 品类名称
level string 客服评级
group string AB test组别
dt string
# Partition Information
# col_name data_type comment
dt string
Detailed Table Information
Table(tableName:alpha_sales_staff_info, dbName:app, owner:mart_ai, createTime:1542188102, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:staff, type:string, comment:客服pin), FieldSchema(name:mall_id, type:string, comment:服务商ID), FieldSchema(name:brand_name, type:string, comment:品牌名称), FieldSchema(name:category, type:string, comment:品类名称), FieldSchema(name:level, type:string, comment:客服评级), FieldSchema(name:group, type:string, comment:AB test组别), FieldSchema(name:dt, type:string, comment:null)], location:hdfs://ns7/user/mart_ai/app.db/alpha_sales_staff_info, inputFormat:org.apache.hadoop.mapred.TextInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe, parameters:{serialization.format= , field.delim= , line.delim=
}), bucketCols:[], sortCols:[], parameters:{}, skewedInfo:SkewedInfo(skewedColNames:[], skewedColValues:[], skewedColValueLocationMaps:{}), storedAsSubDirectories:false), partitionKeys:[FieldSchema(name:dt, type:string, comment:null)], parameters:{mart_name=mart_ai, transient_lastDdlTime=1542188102}, viewOriginalText:null, viewExpandedText:null, tableType:MANAGED_TABLE)
Time taken: 0.078 seconds, Fetched: 15 row(s)
5. 查看表的partitions信息（show partitions ）
#a.表不是partition表
hive> show partitions dpc_test;
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. Table dpc_test is not a partitioned table
#b. 表有partition
hive> show partitions alpha_sales_staff_info;
OK
dt=v1
dt=v2
dt=v3
Time taken: 0.075 seconds, Fetched: 3 row(s)