[jira] [Updated] (IGNITE-4163) Wrong SQL generated by org.apache.ignite.cache.store.jdbc.dialect.BasicJdbcDialect#loadCacheSelectRangeQuery

["Vasiliy Sisko (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-4163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vasiliy Sisko updated IGNITE-4163:
----------------------------------
    Attachment: IGNITE_4163_Oracle_specific_for_load_range_query_.patch

Implemented Oracle specific query for select range query.

> Wrong SQL generated by org.apache.ignite.cache.store.jdbc.dialect.BasicJdbcDialect#loadCacheSelectRangeQuery
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: IGNITE-4163
>                 URL: https://issues.apache.org/jira/browse/IGNITE-4163
>             Project: Ignite
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.7
>            Reporter: Anghel Botos
>            Assignee: Vasiliy Sisko
>         Attachments: IGNITE_4163_Oracle_specific_for_load_range_query_.patch
>
>
> The SQL statement generated by org.apache.ignite.cache.store.jdbc.dialect.BasicJdbcDialect#loadCacheSelectRangeQuery looks like this:
> {{SELECT KEY_COLUMN_1,KEY_COLUMN_2 FROM (SELECT KEY_COLUMN_1,KEY_COLUMN_2, ROWNUM() AS rn FROM SOME_TABLE ORDER BY KEY_COLUMN_1,KEY_COLUMN_2) WHERE mod(rn, ?) = 0}}
> For Oracle this is incorrect, as Oracle does not have a {{ROWNUM()}} function. For the above query the following error is thrown: {{ORA-00923: FROM keyword not found where expected}}
> Regarding row numbering Oracle has:
> * a {{ROWNUM}} pseudocolumn, in which case the query should have {{ROWNUM AS rn}}
> * a {{ROW_NUMBER()}} function, in which case the query would become more complicated. See https://docs.oracle.com/database/121/SQLRF/functions170.htm#SQLRF06100 for more details about {{ROW_NUMBER()}}
> Please make the neccessary adjustments to either {{BasicJdbcDialect}} or {{OracleDialect}} so that a correct query is produced.



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