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Posted to issues@flink.apache.org by "Leonard Xu (Jira)" <ji...@apache.org> on 2019/12/24 07:55:00 UTC
[jira] [Created] (FLINK-15379) JDBC connector return wrong value if
defined dataType contains precision
Leonard Xu created FLINK-15379:
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Summary: JDBC connector return wrong value if defined dataType contains precision
Key: FLINK-15379
URL: https://issues.apache.org/jira/browse/FLINK-15379
Project: Flink
Issue Type: Bug
Components: Table SQL / Planner
Affects Versions: 1.10.0
Reporter: Leonard Xu
A mysql table like:
{code:java}
// CREATE TABLE `currency` (
`currency_id` bigint(20) NOT NULL,
`currency_name` varchar(200) DEFAULT NULL,
`rate` double DEFAULT NULL,
`currency_time` timestamp NULL DEFAULT CURRENT_TIMESTAMP,
`country` varchar(100) DEFAULT NULL,
`timestamp6` timestamp(6) NULL DEFAULT NULL,
`time6` time(6) DEFAULT NULL,
`gdp` decimal(10,4) DEFAULT NULL,
PRIMARY KEY (`currency_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
+-------------+---------------+------+---------------------+---------+----------------------------+-----------------+----------+
| currency_id | currency_name | rate | currency_time | country | timestamp6 | time6 | gdp |
+-------------+---------------+------+---------------------+---------+----------------------------+-----------------+----------+
| 1 | US Dollar | 1020 | 2019-12-20 17:23:00 | America | 2019-12-20 12:22:00.023456 | 12:22:00.023456 | 100.0112 |
| 2 | Euro | 114 | 2019-12-20 12:22:00 | Germany | 2019-12-20 12:22:00.023456 | 12:22:00.023456 | 100.0112 |
| 3 | RMB | 16 | 2019-12-20 12:22:00 | China | 2019-12-20 12:22:00.023456 | 12:22:00.023456 | 100.0112 |
| 4 | Yen | 1 | 2019-12-20 12:22:00 | Japan | 2019-12-20 12:22:00.123456 | 12:22:00.123456 | 100.4112 |
+-------------+---------------+------+---------------------+---------+----------------------------+-----------------+----------+{code}
If user defined a jdbc table as dimension table like:
{code:java}
//
public static final 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'" +
")";
{code}
User will get wrong value in column `timestamp6`,`time6`,`gdp`:
{code:java}
// c.currency_id, c.currency_name, c.rate, c.currency_time, c.country, c.timestamp9, c.time9, c.gdp
1,US Dollar,1020.0,2019-12-20T17:23,America,2019-12-20T12:22:00.023456,12:22,-0.0001
2,Euro,114.0,2019-12-20T12:22,Germany,2019-12-20T12:22:00.023456,12:22,-0.0001
4,Yen,1.0,2019-12-20T12:22,Japan,2019-12-20T12:22:00.123456,12:22,-0.0001{code}
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