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From "Andrew Mashenkov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-11563) DELETE WHERE does not work in prepared statements
Date Thu, 11 Apr 2019 08:54:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-11563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16815220#comment-16815220

Andrew Mashenkov commented on IGNITE-11563:

 # Rounding\cast value to column scale-precision by default with an option to disable this
behavior looks acceptable. Let's make this like MsSql goes.
 # It seems we can do nothing for cache API for now, but just point to decimal limitations
in Ignite documentation . 
We could compare 2 decimals with rounding up to some common scale, but it is impossible due
to key are compares as byte[]. Even if we found a solution to compare decimal fields without
deserialization, comparing key binary objects field-by-field will hit performance too much.

> DELETE WHERE does not work in prepared statements
> -------------------------------------------------
>                 Key: IGNITE-11563
>                 URL: https://issues.apache.org/jira/browse/IGNITE-11563
>             Project: Ignite
>          Issue Type: Bug
>          Components: sql
>    Affects Versions: 2.7
>            Reporter: Stefan
>            Assignee: Pavel Kuznetsov
>            Priority: Minor
>          Time Spent: 10m
>  Remaining Estimate: 0h
> With SQL I cannot delete a row using a prepared statement. The following statement is
simply ignored:
>  {{DELETE}} {{FROM}} {{AnyTable WHERE}} {{id = ?}}
>  This happens with JDBC-Thin and with ODBC so I suspect that the cluster gets the correct
data but handles it wrong. By adding an always-true-condition it works as expected:
>  {{DELETE}} {{FROM}} {{AnyTable WHERE}} {{id = id AND}} {{id = ?}}
>  I tested with a very simple table that was created with:
> {{CREATE TABLE testtable (}}
>  {{    "ID" NUMBER(19,0),}}
>  {{    "VALUE" VARCHAR2(255 CHAR),}}
>  {{    PRIMARY KEY (ID)}}
>  {{) WITH "template=replicated,cache_name=testtable"}}

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