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Posted to user@hive.apache.org by venkatesh b <ve...@gmail.com> on 2015/08/10 14:54:00 UTC

How to create new table like existing with an extra column in single query.

Hello,

In hive we got a need that we need to create a new table like the old table
with an extra column at run time. This must be done in a single query. No
second query with alter table statement.

Query like:

Create table new_table like old_table , new_column datatype;

Please help me out, searched in many forums but not found the solution.
Please inform me if any other information is needed.

Thanks & Regards
Venkatesh

Re: How to create new table like existing with an extra column in single query.

Posted by venkatesh b <ve...@gmail.com>.

Ok finally got the solution.

"Create table if not exists newTable as select oldTable.*, "" as newColumn
from oldTable"

Regards
Venkatesh

On Tuesday, August 11, 2015, venkatesh b <ve...@gmail.com>
wrote:

> Thanks Adam.
>
> As mentioned we have a need that in a single query it should be done,
> since ours is an automated query generation and no manual interactions are
> done.
>
> We need a query like
>
> *Create table if not exists newTable like oldTable, newColumn datatype*
>
> *Without copying data from oldTable. *
>
>
> On Monday, August 10, 2015, LaStrange, Adam <Adam.LaStrange@sig.com
> <javascript:_e(%7B%7D,'cvml','Adam.LaStrange@sig.com');>> wrote:
>
>> How about:
>>
>>
>>
>> create table XXX like YYY;
>>
>> alter table XXX add columns (new_column int);
>>
>>
>>
>> *From:* venkatesh b [mailto:venkateshmailinglist@gmail.com]
>> *Sent:* Monday, August 10, 2015 9:28 AM
>> *To:* Wangwenli
>> *Cc:* user
>> *Subject:* Re: How to create new table like existing with an extra
>> column in single query.
>>
>>
>>
>> Thanks Wenli for quick reply.
>>
>>
>>
>> Yes, we have a requirement exactly the same which you mentioned.
>>
>>
>>
>> I have tried the query which you provided but got an error saying that
>>
>> "Invalid column reference for newColumn possible columns are ......"
>>
>>
>>
>>
>>
>>
>>
>> Thanks
>>
>> Venkatesh
>>
>> On Monday, August 10, 2015, Wangwenli <wa...@huawei.com> wrote:
>>
>> something like this?
>>
>> create table newTable as select oldTable.*, newCol1,newCol2 from oldTable;
>>
>>
>> ------------------------------
>>
>> wenli
>>
>> Regards
>>
>>
>>
>> *From:* venkatesh b
>>
>> *Date:* 2015-08-10 20:54
>>
>> *To:* user
>>
>> *Subject:* How to create new table like existing with an extra column in
>> single query.
>>
>> Hello,
>>
>>
>>
>> In hive we got a need that we need to create a new table like the old
>> table with an extra column at run time. This must be done in a single
>> query. No second query with alter table statement.
>>
>>
>>
>> Query like:
>>
>>
>>
>> Create table new_table like old_table , new_column datatype;
>>
>>
>>
>> Please help me out, searched in many forums but not found the solution.
>>
>> Please inform me if any other information is needed.
>>
>>
>>
>> Thanks & Regards
>>
>> Venkatesh
>>
>>
>> ------------------------------
>>
>> IMPORTANT: The information contained in this email and/or its attachments
>> is confidential. If you are not the intended recipient, please notify the
>> sender immediately by reply and immediately delete this message and all its
>> attachments. Any review, use, reproduction, disclosure or dissemination of
>> this message or any attachment by an unintended recipient is strictly
>> prohibited. Neither this message nor any attachment is intended as or
>> should be construed as an offer, solicitation or recommendation to buy or
>> sell any security or other financial instrument. Neither the sender, his or
>> her employer nor any of their respective affiliates makes any warranties as
>> to the completeness or accuracy of any of the information contained herein
>> or that this message or any of its attachments is free of viruses.
>>
>

Re: How to create new table like existing with an extra column in single query.

Posted by venkatesh b <ve...@gmail.com>.

Thanks Adam.

As mentioned we have a need that in a single query it should be done, since
ours is an automated query generation and no manual interactions are done.

We need a query like

*Create table if not exists newTable like oldTable, newColumn datatype*

*Without copying data from oldTable. *


On Monday, August 10, 2015, LaStrange, Adam <Ad...@sig.com> wrote:

> How about:
>
>
>
> create table XXX like YYY;
>
> alter table XXX add columns (new_column int);
>
>
>
> *From:* venkatesh b [mailto:venkateshmailinglist@gmail.com
> <javascript:_e(%7B%7D,'cvml','venkateshmailinglist@gmail.com');>]
> *Sent:* Monday, August 10, 2015 9:28 AM
> *To:* Wangwenli
> *Cc:* user
> *Subject:* Re: How to create new table like existing with an extra column
> in single query.
>
>
>
> Thanks Wenli for quick reply.
>
>
>
> Yes, we have a requirement exactly the same which you mentioned.
>
>
>
> I have tried the query which you provided but got an error saying that
>
> "Invalid column reference for newColumn possible columns are ......"
>
>
>
>
>
>
>
> Thanks
>
> Venkatesh
>
> On Monday, August 10, 2015, Wangwenli <wangwenli@huawei.com
> <javascript:_e(%7B%7D,'cvml','wangwenli@huawei.com');>> wrote:
>
> something like this?
>
> create table newTable as select oldTable.*, newCol1,newCol2 from oldTable;
>
>
> ------------------------------
>
> wenli
>
> Regards
>
>
>
> *From:* venkatesh b
>
> *Date:* 2015-08-10 20:54
>
> *To:* user
>
> *Subject:* How to create new table like existing with an extra column in
> single query.
>
> Hello,
>
>
>
> In hive we got a need that we need to create a new table like the old
> table with an extra column at run time. This must be done in a single
> query. No second query with alter table statement.
>
>
>
> Query like:
>
>
>
> Create table new_table like old_table , new_column datatype;
>
>
>
> Please help me out, searched in many forums but not found the solution.
>
> Please inform me if any other information is needed.
>
>
>
> Thanks & Regards
>
> Venkatesh
>
>
> ------------------------------
>
> IMPORTANT: The information contained in this email and/or its attachments
> is confidential. If you are not the intended recipient, please notify the
> sender immediately by reply and immediately delete this message and all its
> attachments. Any review, use, reproduction, disclosure or dissemination of
> this message or any attachment by an unintended recipient is strictly
> prohibited. Neither this message nor any attachment is intended as or
> should be construed as an offer, solicitation or recommendation to buy or
> sell any security or other financial instrument. Neither the sender, his or
> her employer nor any of their respective affiliates makes any warranties as
> to the completeness or accuracy of any of the information contained herein
> or that this message or any of its attachments is free of viruses.
>

RE: How to create new table like existing with an extra column in single query.

Posted by "LaStrange, Adam" <Ad...@sig.com>.

How about:

create table XXX like YYY;
alter table XXX add columns (new_column int);

From: venkatesh b [mailto:venkateshmailinglist@gmail.com]
Sent: Monday, August 10, 2015 9:28 AM
To: Wangwenli
Cc: user
Subject: Re: How to create new table like existing with an extra column in single query.

Thanks Wenli for quick reply.

Yes, we have a requirement exactly the same which you mentioned.

I have tried the query which you provided but got an error saying that
"Invalid column reference for newColumn possible columns are ......"

Thanks
Venkatesh

On Monday, August 10, 2015, Wangwenli <wa...@huawei.com>> wrote:
something like this?
create table newTable as select oldTable.*, newCol1,newCol2 from oldTable;

________________________________
wenli
Regards

From: venkatesh b<javascript:_e(%7B%7D,'cvml','venkateshmailinglist@gmail.com');>
Date: 2015-08-10 20:54
To: user<javascript:_e(%7B%7D,'cvml','user@hive.apache.org');>
Subject: How to create new table like existing with an extra column in single query.
Hello,

In hive we got a need that we need to create a new table like the old table with an extra column at run time. This must be done in a single query. No second query with alter table statement.

Query like:

Create table new_table like old_table , new_column datatype;

Please help me out, searched in many forums but not found the solution.
Please inform me if any other information is needed.

Thanks & Regards
Venkatesh

________________________________

IMPORTANT: The information contained in this email and/or its attachments is confidential. If you are not the intended recipient, please notify the sender immediately by reply and immediately delete this message and all its attachments. Any review, use, reproduction, disclosure or dissemination of this message or any attachment by an unintended recipient is strictly prohibited. Neither this message nor any attachment is intended as or should be construed as an offer, solicitation or recommendation to buy or sell any security or other financial instrument. Neither the sender, his or her employer nor any of their respective affiliates makes any warranties as to the completeness or accuracy of any of the information contained herein or that this message or any of its attachments is free of viruses.

Re: How to create new table like existing with an extra column in single query.

Posted by venkatesh b <ve...@gmail.com>.

Thanks Wenli for quick reply.

Yes, we have a requirement exactly the same which you mentioned.

I have tried the query which you provided but got an error saying that
"Invalid column reference for newColumn possible columns are ......"



Thanks
Venkatesh

On Monday, August 10, 2015, Wangwenli <wa...@huawei.com> wrote:

> something like this?
> create table newTable as select oldTable.*, newCol1,newCol2 from oldTable;
>
> ------------------------------
> wenli
> Regards
>
>
> *From:* venkatesh b
> <javascript:_e(%7B%7D,'cvml','venkateshmailinglist@gmail.com');>
> *Date:* 2015-08-10 20:54
> *To:* user <javascript:_e(%7B%7D,'cvml','user@hive.apache.org');>
> *Subject:* How to create new table like existing with an extra column in
> single query.
> Hello,
>
> In hive we got a need that we need to create a new table like the old
> table with an extra column at run time. This must be done in a single
> query. No second query with alter table statement.
>
> Query like:
>
> Create table new_table like old_table , new_column datatype;
>
> Please help me out, searched in many forums but not found the solution.
> Please inform me if any other information is needed.
>
> Thanks & Regards
> Venkatesh
>
>

Re: How to create new table like existing with an extra column in single query.

Posted by Wangwenli <wa...@huawei.com>.

something like this?
create table newTable as select oldTable.*, newCol1,newCol2 from oldTable;

________________________________
wenli
Regards

From: venkatesh b<ma...@gmail.com>
Date: 2015-08-10 20:54
To: user<ma...@hive.apache.org>
Subject: How to create new table like existing with an extra column in single query.
Hello,

In hive we got a need that we need to create a new table like the old table with an extra column at run time. This must be done in a single query. No second query with alter table statement.

Query like:

Create table new_table like old_table , new_column datatype;

Please help me out, searched in many forums but not found the solution.
Please inform me if any other information is needed.

Thanks & Regards
Venkatesh