[JDBC-V2] DatabaseMedata: review max values

[chernser]

Description

There are several methods that return extreme values. These methods should be reviewed and tested:

Here is the list:

• getMaxBinaryLiteralLength()
• getMaxCatalogNameLength()
• getMaxCharLiteralLength()
• getMaxColumnNameLength()
• getMaxColumnsInGroupBy()
• getMaxColumnsInIndex()
• getMaxColumnsInOrderBy()
• getMaxColumnsInSelect()
• getMaxColumnsInTable()
• getMaxConnections()
• getMaxCursorNameLength()
• getMaxIndexLength()
• getMaxLogicalLobSize()
• getMaxProcedureNameLength()
• getMaxRowSize()
• getMaxSchemaNameLength()
• getMaxStatementLength()
• getMaxStatements()
• getMaxTableNameLength()
• getMaxTablesInSelect()
• getMaxUserNameLength()