使用SchemaCrawler时,无法检索列的注释,但无法检索表

时间:2017-04-03 03:29:47

标签: schemacrawler

我使用SchemaCrawler使用以下代码获取MySQL5.7表的元数据:

final Connection connection = ...;
final DatabaseSpecificOverrideOptions databaseSpecificOverrideOptions =
                        SchemaCrawlerUtility.matchDatabaseSpecificOverrideOptions(connection);

final SchemaCrawler schemaCrawler = new SchemaCrawler(connection, databaseSpecificOverrideOptions);

final SchemaCrawlerOptions options = new SchemaCrawlerOptions();
options.setSchemaInfoLevel(SchemaInfoLevelBuilder.maximum());
options.setTableInclusionRule(new IncludeAll());
options.setColumnInclusionRule(new IncludeAll());

final Catalog catalog = schemaCrawler.crawl(options);
final Collection<Table> tables = catalog.getTables();

for (Table t : tables) {
    logger.info("Table comment: {}", t.getRemarks());
}

这是测试表:

create table testtable (
    id bigint comment 'key level comment', 
    name varchar(32) comment 'column level comment'
) comment='table level comment';

我可以获得列级评论,但我永远无法获得表级评论。

我有什么错误配置吗?

谢谢!

1 个答案:

答案 0 :(得分:1)

这是MySQL JDBC驱动程序的烦恼。创建连接时,需要在JDBC连接URL中设置useInformationSchema=true。有关详细信息,请查看StackOverflow问题Retrieve mysql table comment using DatabaseMetaData

Sualeh Fatehi,SchemaCrawler