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https://issues.apache.org/jira/browse/HIVE-10933?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chaoyu Tang reassigned HIVE-10933:
----------------------------------
Assignee: Chaoyu Tang
> Hive 0.13 returns precision 0 for varchar(32) from
> DatabaseMetadata.getColumns()
> --------------------------------------------------------------------------------
>
> Key: HIVE-10933
> URL: https://issues.apache.org/jira/browse/HIVE-10933
> Project: Hive
> Issue Type: Bug
> Components: API
> Affects Versions: 0.13.0
> Reporter: Son Nguyen
> Assignee: Chaoyu Tang
>
> DatabaseMetadata.getColumns() returns "COLUMN_SIZE" as 0 for a column defined
> as varchar(32), or char(32). While ResultSetMetaData.getPrecision() returns
> correct value 32.
> Here is the segment program that reproduces the issue.
> try {
> statement = connection.createStatement();
>
> statement.execute("drop table if exists son_table");
>
> statement.execute("create table son_table( col1 varchar(32) )");
>
> statement.close();
>
> } catch ( Exception e) {
> return;
> }
>
> // get column info using metadata
> try {
> DatabaseMetaData dmd = null;
> ResultSet resultSet = null;
>
> dmd = connection.getMetaData();
>
> resultSet = dmd.getColumns(null, null, "son_table", "col1");
>
> if ( resultSet.next() ) {
> String tabName = resultSet.getString("TABLE_NAME");
> String colName = resultSet.getString("COLUMN_NAME");
> String dataType = resultSet.getString("DATA_TYPE");
> String typeName = resultSet.getString("TYPE_NAME");
> int precision = resultSet.getInt("COLUMN_SIZE");
>
> // output is: colName = col1, dataType = 12, typeName =
> VARCHAR, precision = 0.
> System.out.format("colName = %s, dataType = %s, typeName = %s,
> precision = %d.",
> colName, dataType, typeName, precision);
> }
> } catch ( Exception e) {
> return;
> }
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