schema crawler--Table name pattern can not be NULL or empty - schemacrawler

Question

I'm running the following command:
schemacrawler.cmd -server=mysql -database=prepaid -infolevel=minimum -command=list -loglevel=CONFIG -url=jdbc:mysql://127.0.0.1:3306/prepaid -u=root -schemas=prepaid
And I'm getting the following error:
Feb 22, 2017 5:11:48 PM us.fatehi.commandlineparser.CommandLineUtility logFullStackTrace
SEVERE: Exception retrieving table information: Table name pattern can not be NULL or empty.
schemacrawler.schemacrawler.SchemaCrawlerException: Exception retrieving table information: Table name pattern can not be NULL or empty.
at schemacrawler.crawl.SchemaCrawler.crawlTables(SchemaCrawler.java:739)
at schemacrawler.crawl.SchemaCrawler.crawl(SchemaCrawler.java:797)
at schemacrawler.tools.executable.BaseStagedExecutable.execute(BaseStagedExecutable.java:91)
at schemacrawler.tools.commandline.SchemaCrawlerCommandLine.execute(SchemaCrawlerCommandLine.java:129)
at schemacrawler.Main.main(Main.java:90)
Caused by: java.sql.SQLException: Table name pattern can not be NULL or empty.
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:545)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:513)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:505)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:479)
at com.mysql.cj.jdbc.DatabaseMetaData.getTables(DatabaseMetaData.java:3836)
at schemacrawler.crawl.TableRetriever.retrieveTables(TableRetriever.java:114)
at schemacrawler.crawl.SchemaCrawler.lambda$crawlTables$26(SchemaCrawler.java:570)
at schemacrawler.crawl.SchemaCrawler$$Lambda$41/1559122513.call(Unknown Source)
at sf.util.StopWatch.time(StopWatch.java:156)
at schemacrawler.crawl.SchemaCrawler.crawlTables(SchemaCrawler.java:567)
... 4 more
=================
Please advise

Answer 1

Please make sure to use the correct MySQL database connection URL, following the documentation on Driver/Datasource Class Names, URL Syntax and Configuration Properties for Connector/J. In particular, you need to set nullNamePatternMatchesAll=true like this:
schemacrawler.cmd -server=mysql -database=prepaid -infolevel=minimum -command=list -loglevel=CONFIG -url=jdbc:mysql://127.0.0.1:3306/prepaid?nullNamePatternMatchesAll=true -u=root -schemas=prepaid
Or, better, use SchemaCrawler's built-in support for MySQL, like this, which is much easier:
schemacrawler.cmd -server=mysql -host=127.0.0.1 -database=prepaid -infolevel=minimum -command=list -loglevel=CONFIG -u=root -schemas=prepaid
Sualeh Fatehi, SchemaCrawler