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https://issues.apache.org/jira/browse/FLINK-15445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17006054#comment-17006054
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Jark Wu commented on FLINK-15445:
---------------------------------
Please also check that whether the result is correct as the FLINK-15379
reported and also check that whether all the JDBC drivers support the full
precisions.
> JDBC Table Source didn't work for Types with precision (or/and scale)
> ---------------------------------------------------------------------
>
> Key: FLINK-15445
> URL: https://issues.apache.org/jira/browse/FLINK-15445
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Affects Versions: 1.10.0
> Reporter: Zhenghua Gao
> Priority: Major
> Fix For: 1.10.0
>
>
> {code:java}
> public class JDBCSourceExample {
> public static void main(String[] args) throws Exception {
> StreamExecutionEnvironment env =
> StreamExecutionEnvironment.getExecutionEnvironment();
> env.setParallelism(1);
> EnvironmentSettings envSettings = EnvironmentSettings.newInstance()
> .useBlinkPlanner()
> .inStreamingMode()
> .build();
> StreamTableEnvironment tableEnvironment =
> StreamTableEnvironment.create(env, envSettings);
> String mysqlCurrencyDDL = "CREATE TABLE currency (\n" +
> " currency_id BIGINT,\n" +
> " currency_name STRING,\n" +
> " rate DOUBLE,\n" +
> " currency_time TIMESTAMP(3),\n" +
> " country STRING,\n" +
> " timestamp6 TIMESTAMP(6),\n" +
> " time6 TIME(6),\n" +
> " gdp DECIMAL(10, 4)\n" +
> ") WITH (\n" +
> " 'connector.type' = 'jdbc',\n" +
> " 'connector.url' = 'jdbc:mysql://localhost:3306/test',\n" +
> " 'connector.username' = 'root'," +
> " 'connector.table' = 'currency',\n" +
> " 'connector.driver' = 'com.mysql.jdbc.Driver',\n" +
> " 'connector.lookup.cache.max-rows' = '500', \n" +
> " 'connector.lookup.cache.ttl' = '10s',\n" +
> " 'connector.lookup.max-retries' = '3'" +
> ")";
> tableEnvironment.sqlUpdate(mysqlCurrencyDDL);
> String querySQL = "select * from currency";
> tableEnvironment.toAppendStream(tableEnvironment.sqlQuery(querySQL),
> Row.class).print();
> tableEnvironment.execute("JdbcExample");
> }
> }{code}
>
> Throws Exception:
>
> Exception in thread "main" org.apache.flink.table.api.ValidationException:
> Type TIMESTAMP(6) of table field 'timestamp6' does not match with the
> physical type TIMESTAMP(3) of the 'timestamp9' field of the TableSource
> return type.
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