Re: Adding comment to a table for columns
Hi Bejoy, I checked and didn't find anywhere using extended and formatted simultaneously to describe table. It is like :- DESCRIBE [EXTENDED|FORMATTED] table_name[DOT col_name ( [DOT field_name] | [DOT '$elem$'] | [DOT '$key$'] | [DOT '$value$'] )* ] Everywhere it says i can use only one at a time. I tried using both as you suggested and gets this error :- FAILED: Parse Error: line 1:19 mismatched input 'extended' expecting Identifier near 'formatted' in specifying table types If you can please try to remember the exact operation , or if there is any other way of doing it then please let me know. Thanks, Chunky. On Thu, Feb 21, 2013 at 5:22 PM, wrote: > > Hi Gupta > > Try out > > DESCRIBE EXTENDED FORMATTED > > I vaguely recall a operation like this. > Please check hive wiki for the exact syntax. > > Regards > Bejoy KS > > Sent from remote device, Please excuse typos > > From: Chunky Gupta > Date: Thu, 21 Feb 2013 17:15:37 +0530 > To: ; ; < snehalata_bhas...@syntelinc.com> > ReplyTo: user@hive.apache.org > Subject: Re: Adding comment to a table for columns > > Hi Bejoy, Bhaskar > > I tried using FORMATTED, but it will not give me comments which I have put while creating table. Its output is like :- > > col_namedata_type comment > cstring from deserializer > timestring from deserializer > > Thanks, > Chunky. > > On Thu, Feb 21, 2013 at 4:50 PM, wrote: >> >> Hi Gupta >> >> You can the describe output in a formatted way using >> >> DESCRIBE FORMATTED ; >> Regards >> Bejoy KS >> >> Sent from remote device, Please excuse typos >> >> From: Chunky Gupta >> Date: Thu, 21 Feb 2013 16:46:30 +0530 >> To: >> ReplyTo: user@hive.apache.org >> Subject: Adding comment to a table for columns >> >> Hi, >> >> I am using this syntax to add comments for all columns :- >> >> CREATE EXTERNAL TABLE test ( c STRING COMMENT 'Common class', time STRING COMMENT 'Common time', url STRING COMMENT 'Site URL' ) PARTITIONED BY (dt STRING ) LOCATION 's3://BucketName/' >> >> Output of Describe Extended table is like :- (Output is just an example copied from internet) >> >> hive> DESCRIBE EXTENDED table_name; >> >> Detailed Table Information Table(tableName:table_name, dbName:benchmarking, owner:root, createTime:1309480053, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:session_key, type:string, comment:null), FieldSchema(name:remote_address, type:string, comment:null), FieldSchema(name:canister_lssn, type:string, comment:null), FieldSchema(name:canister_session_id, type:bigint, comment:null), FieldSchema(name:tltsid, type:string, comment:null), FieldSchema(name:tltuid, type:string, comment:null), FieldSchema(name:tltvid, type:string, comment:null), FieldSchema(name:canister_server, type:string, comment:null), FieldSchema(name:session_timestamp, type:string, comment:null), FieldSchema(name:session_duration, type:string, comment:null), FieldSchema(name:hit_count, type:bigint, comment:null), FieldSchema(name:http_user_agent, type:string, comment:null), FieldSchema(name:extractid, type:bigint, comment:null), FieldSchema(name:site_link, type:string, comment:null), FieldSchema(name:dt, type:string, comment:null), FieldSchema(name:hour, type:int, comment:null)], location:hdfs://hadoop2/user/hive/warehouse/benchmarking.db/table_name, inputFormat:org.apache.hadoop.mapred.SequenceFileInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe) >> >> Is there any way of getting this detailed comments and column name in readable format, just like the output of "Describe table_name" ?. >> >> >> Thanks, >> >> Chunky. > >
Re: Adding comment to a table for columns
Hi Gupta Try out DESCRIBE EXTENDED FORMATTED I vaguely recall a operation like this. Please check hive wiki for the exact syntax. Regards Bejoy KS Sent from remote device, Please excuse typos -Original Message- From: Chunky Gupta Date: Thu, 21 Feb 2013 17:15:37 To: ; ; Reply-To: user@hive.apache.org Subject: Re: Adding comment to a table for columns Hi Bejoy, Bhaskar I tried using FORMATTED, but it will not give me comments which I have put while creating table. Its output is like :- col_namedata_type comment cstring from deserializer timestring from deserializer Thanks, Chunky. On Thu, Feb 21, 2013 at 4:50 PM, wrote: > ** > Hi Gupta > > You can the describe output in a formatted way using > > DESCRIBE FORMATTED ; > Regards > Bejoy KS > > Sent from remote device, Please excuse typos > -- > *From: * Chunky Gupta > *Date: *Thu, 21 Feb 2013 16:46:30 +0530 > *To: * > *ReplyTo: * user@hive.apache.org > *Subject: *Adding comment to a table for columns > > Hi, > > I am using this syntax to add comments for all columns :- > > CREATE EXTERNAL TABLE test ( c STRING COMMENT 'Common class', time STRING > COMMENT 'Common time', url STRING COMMENT 'Site URL' ) PARTITIONED BY (dt > STRING ) LOCATION 's3://BucketName/' > > Output of Describe Extended table is like :- (Output is just an example > copied from internet) > > hive> DESCRIBE EXTENDED table_name; > > Detailed Table Information Table(tableName:table_name, > dbName:benchmarking, owner:root, createTime:1309480053, lastAccessTime:0, > retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:session_key, > type:string, comment:null), FieldSchema(name:remote_address, type:string, > comment:null), FieldSchema(name:canister_lssn, type:string, comment:null), > FieldSchema(name:canister_session_id, type:bigint, comment:null), > FieldSchema(name:tltsid, type:string, comment:null), > FieldSchema(name:tltuid, type:string, comment:null), > FieldSchema(name:tltvid, type:string, comment:null), > FieldSchema(name:canister_server, type:string, comment:null), > FieldSchema(name:session_timestamp, type:string, comment:null), > FieldSchema(name:session_duration, type:string, comment:null), > FieldSchema(name:hit_count, type:bigint, comment:null), > FieldSchema(name:http_user_agent, type:string, comment:null), > FieldSchema(name:extractid, type:bigint, comment:null), > FieldSchema(name:site_link, type:string, comment:null), > FieldSchema(name:dt, type:string, comment:null), FieldSchema(name:hour, > type:int, comment:null)], > location:hdfs://hadoop2/user/hive/warehouse/benchmarking.db/table_name, > inputFormat:org.apache.hadoop.mapred.SequenceFileInputFormat, > outputFormat:org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat, > compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, > serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe) > > Is there any way of getting this detailed comments and column name in > readable format, just like the output of "Describe table_name" ?. > > > Thanks, > > Chunky. >
Re: Adding comment to a table for columns
Hi Bejoy, Bhaskar I tried using FORMATTED, but it will not give me comments which I have put while creating table. Its output is like :- col_namedata_type comment cstring from deserializer timestring from deserializer Thanks, Chunky. On Thu, Feb 21, 2013 at 4:50 PM, wrote: > ** > Hi Gupta > > You can the describe output in a formatted way using > > DESCRIBE FORMATTED ; > Regards > Bejoy KS > > Sent from remote device, Please excuse typos > -- > *From: * Chunky Gupta > *Date: *Thu, 21 Feb 2013 16:46:30 +0530 > *To: * > *ReplyTo: * user@hive.apache.org > *Subject: *Adding comment to a table for columns > > Hi, > > I am using this syntax to add comments for all columns :- > > CREATE EXTERNAL TABLE test ( c STRING COMMENT 'Common class', time STRING > COMMENT 'Common time', url STRING COMMENT 'Site URL' ) PARTITIONED BY (dt > STRING ) LOCATION 's3://BucketName/' > > Output of Describe Extended table is like :- (Output is just an example > copied from internet) > > hive> DESCRIBE EXTENDED table_name; > > Detailed Table Information Table(tableName:table_name, > dbName:benchmarking, owner:root, createTime:1309480053, lastAccessTime:0, > retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:session_key, > type:string, comment:null), FieldSchema(name:remote_address, type:string, > comment:null), FieldSchema(name:canister_lssn, type:string, comment:null), > FieldSchema(name:canister_session_id, type:bigint, comment:null), > FieldSchema(name:tltsid, type:string, comment:null), > FieldSchema(name:tltuid, type:string, comment:null), > FieldSchema(name:tltvid, type:string, comment:null), > FieldSchema(name:canister_server, type:string, comment:null), > FieldSchema(name:session_timestamp, type:string, comment:null), > FieldSchema(name:session_duration, type:string, comment:null), > FieldSchema(name:hit_count, type:bigint, comment:null), > FieldSchema(name:http_user_agent, type:string, comment:null), > FieldSchema(name:extractid, type:bigint, comment:null), > FieldSchema(name:site_link, type:string, comment:null), > FieldSchema(name:dt, type:string, comment:null), FieldSchema(name:hour, > type:int, comment:null)], > location:hdfs://hadoop2/user/hive/warehouse/benchmarking.db/table_name, > inputFormat:org.apache.hadoop.mapred.SequenceFileInputFormat, > outputFormat:org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat, > compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, > serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe) > > Is there any way of getting this detailed comments and column name in > readable format, just like the output of "Describe table_name" ?. > > > Thanks, > > Chunky. >
RE: Adding comment to a table for columns
Try using 'describe formatted' command i.e. describe formatted test Thanks and regards, Snehalata Deorukhkar From: Chunky Gupta [mailto:chunky.gu...@vizury.com] Sent: Thursday, February 21, 2013 4:47 PM To: user@hive.apache.org Subject: Adding comment to a table for columns Hi, I am using this syntax to add comments for all columns :- CREATE EXTERNAL TABLE test ( c STRING COMMENT 'Common class', time STRING COMMENT 'Common time', url STRING COMMENT 'Site URL' ) PARTITIONED BY (dt STRING ) LOCATION 's3://BucketName/' Output of Describe Extended table is like :- (Output is just an example copied from internet) hive> DESCRIBE EXTENDED table_name; Detailed Table Information Table(tableName:table_name, dbName:benchmarking, owner:root, createTime:1309480053, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:session_key, type:string, comment:null), FieldSchema(name:remote_address, type:string, comment:null), FieldSchema(name:canister_lssn, type:string, comment:null), FieldSchema(name:canister_session_id, type:bigint, comment:null), FieldSchema(name:tltsid, type:string, comment:null), FieldSchema(name:tltuid, type:string, comment:null), FieldSchema(name:tltvid, type:string, comment:null), FieldSchema(name:canister_server, type:string, comment:null), FieldSchema(name:session_timestamp, type:string, comment:null), FieldSchema(name:session_duration, type:string, comment:null), FieldSchema(name:hit_count, type:bigint, comment:null), FieldSchema(name:http_user_agent, type:string, comment:null), FieldSchema(name:extractid, type:bigint, comment:null), FieldSchema(name:site_link, type:string, comment:null), FieldSchema(name:dt, type:string, comment:null), FieldSchema(name:hour, type:int, comment:null)], location:hdfs://hadoop2/user/hive/warehouse/benchmarking.db/table_name, inputFormat:org.apache.hadoop.mapred.SequenceFileInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe) Is there any way of getting this detailed comments and column name in readable format, just like the output of "Describe table_name" ?. Thanks, Chunky. Confidential: This electronic message and all contents contain information from Syntel, Inc. which may be privileged, confidential or otherwise protected from disclosure. The information is intended to be for the addressee only. If you are not the addressee, any disclosure, copy, distribution or use of the contents of this message is prohibited. If you have received this electronic message in error, please notify the sender immediately and destroy the original message and all copies.
Re: Adding comment to a table for columns
Hi Gupta You can the describe output in a formatted way using DESCRIBE FORMATTED ; Regards Bejoy KS Sent from remote device, Please excuse typos -Original Message- From: Chunky Gupta Date: Thu, 21 Feb 2013 16:46:30 To: Reply-To: user@hive.apache.org Subject: Adding comment to a table for columns Hi, I am using this syntax to add comments for all columns :- CREATE EXTERNAL TABLE test ( c STRING COMMENT 'Common class', time STRING COMMENT 'Common time', url STRING COMMENT 'Site URL' ) PARTITIONED BY (dt STRING ) LOCATION 's3://BucketName/' Output of Describe Extended table is like :- (Output is just an example copied from internet) hive> DESCRIBE EXTENDED table_name; Detailed Table Information Table(tableName:table_name, dbName:benchmarking, owner:root, createTime:1309480053, lastAccessTime:0, retention:0, sd:StorageDescriptor(cols:[FieldSchema(name:session_key, type:string, comment:null), FieldSchema(name:remote_address, type:string, comment:null), FieldSchema(name:canister_lssn, type:string, comment:null), FieldSchema(name:canister_session_id, type:bigint, comment:null), FieldSchema(name:tltsid, type:string, comment:null), FieldSchema(name:tltuid, type:string, comment:null), FieldSchema(name:tltvid, type:string, comment:null), FieldSchema(name:canister_server, type:string, comment:null), FieldSchema(name:session_timestamp, type:string, comment:null), FieldSchema(name:session_duration, type:string, comment:null), FieldSchema(name:hit_count, type:bigint, comment:null), FieldSchema(name:http_user_agent, type:string, comment:null), FieldSchema(name:extractid, type:bigint, comment:null), FieldSchema(name:site_link, type:string, comment:null), FieldSchema(name:dt, type:string, comment:null), FieldSchema(name:hour, type:int, comment:null)], location:hdfs://hadoop2/user/hive/warehouse/benchmarking.db/table_name, inputFormat:org.apache.hadoop.mapred.SequenceFileInputFormat, outputFormat:org.apache.hadoop.hive.ql.io.HiveSequenceFileOutputFormat, compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null, serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe) Is there any way of getting this detailed comments and column name in readable format, just like the output of "Describe table_name" ?. Thanks, Chunky.
