Description
When execute `SHOW CREATE TALBE XXX` command, the ddl info lost the null flag.
// def toDDL: String = s"${quoteIdentifier(name)} ${dataType.sql}$getDDLComment"
When execute `SHOW CREATE TALBE XXX` command, the ddl info lost the null flag.
// def toDDL: String = s"${quoteIdentifier(name)} ${dataType.sql}$getDDLComment"