[jira] [Resolved] (CALCITE-3449) Use the foreign catalog, schema and table names if they exist rather than the qualified name of the shadow table

["Danny Chen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-3449?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Danny Chen resolved CALCITE-3449.
---------------------------------
    Fix Version/s: 1.22.0
         Assignee: Danny Chen
       Resolution: Fixed

Fixed in [e12d055|https://github.com/apache/calcite/commit/e12d0555cd22e1e3ffc5fe68738bb8a313d0b960], thanks for your PR, [~zhuangdy] !

> Use the foreign catalog, schema and table names if they exist rather than the qualified name of the shadow table
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: CALCITE-3449
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3449
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.21.0
>            Reporter: Zhuang
>            Assignee: Danny Chen
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.22.0
>
>   Original Estimate: 12h
>          Time Spent: 40m
>  Remaining Estimate: 11h 20m
>
> When sending queries to target databse, sub schemas should be removed from the sql, but not for modify statement(update\delete\insert). For example, 
> {quote}delete from "sub_schema".target_table where ...
> {quote}
> will send following sql to target database
> {quote}delete from {color:#ff0000}"sub_schema"{color}.target_table where ... 
> {quote}
> But select quries worked as expect.
> {quote}select * from "sub_schema".target_table
> {quote}
> will be translated into following and send to target databse.
> {quote}select * from target_table
> {quote}
> I've done some inspect, and find that the code are different. In org.apache.calcite.rel.rel2sql.RelToSqlConverter.java, the table names have sub schemas in it.
>  
> {code:title=RelToSqlConverter.java|borderStyle=solid}public Result visit(TableModify modify) {
>  final Map<String, RelDataType> pairs = ImmutableMap.of();
>  final Context context = aliasContext(pairs, false);
> // Target Table Name
>  final SqlIdentifier sqlTargetTable =
>  new SqlIdentifier(modify.getTable().getQualifiedName(), POS);
> {code}
> But in select query , the table name are just table name, without sub schema.
> {code:title=Bar.java|borderStyle=solid}
> public Result visit(TableScan e) {
>     final SqlIdentifier identifier;
>     final JdbcTable jdbcTable = e.getTable().unwrap(JdbcTable.class);
>     if (jdbcTable != null) {
>       // Use the foreign catalog, schema and table names, if they exist,
>       // rather than the qualified name of the shadow table in Calcite.
>       identifier = jdbcTable.tableName();
>     } else {
>       final List<String> qualifiedName = e.getTable().getQualifiedName();
>       identifier = new SqlIdentifier(qualifiedName, SqlParserPos.ZERO);
>     }
> {code}
> I'm really new to Caicite and commit issues, thanks!
>  



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