[jira] [Updated] (IGNITE-7539) SQL COPY command: implement NULL escape sequence handling

["Kirill Shirokov (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-7539?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirill Shirokov updated IGNITE-7539:
------------------------------------
    Description: 
There should be a way to specify NULL field value in a file, which we import via COPY command.

A popular solution among vendors for CSV format is to have a special escape sequence for a NULL value in a field: \N for example.

We need to have a possibility to enable/disable null escape sequence handling for all fields or on per-field basis.

Syntax example:

{noformat}
COPY
    ...
    FORMAT CSV
        ...
        [NULL='null-sequence']
{noformat}

  was:
There should be a way to specify NULL field value in a file, which we import via COPY command.

A popular solution among vendors for CSV format is to have a special escape sequence for a NULL value in a field: \N for example.

We need to have a possibility to enable/disable null escape sequence handling for all fields or on per-field basis.


> SQL COPY command: implement NULL escape sequence handling
> ---------------------------------------------------------
>
>                 Key: IGNITE-7539
>                 URL: https://issues.apache.org/jira/browse/IGNITE-7539
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Kirill Shirokov
>            Priority: Major
>
> There should be a way to specify NULL field value in a file, which we import via COPY command.
> A popular solution among vendors for CSV format is to have a special escape sequence for a NULL value in a field: \N for example.
> We need to have a possibility to enable/disable null escape sequence handling for all fields or on per-field basis.
> Syntax example:
> {noformat}
> COPY
>     ...
>     FORMAT CSV
>         ...
>         [NULL='null-sequence']
> {noformat}



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