CAST-FORMAT. Error message for invalid query does not contain name of lost part

[Pavel Zotov]

This (weird) query:

select cast('Apr' as date format 'YEAR  MON') from rdb$database;

-- fails with following output:

1) 6.0.0.2052:

Statement failed, SQLSTATE = HY000
Cannot find value in input string for "YEAR" pattern

(gdscode = 335545315)

2) 6.0.0.2060:

Statement failed, SQLSTATE = HY000

Cannot recognize "" part of date format

(gdscode = 335545293)

The first message seems much clearer (and second  does not contain 'year' )

Can it be used as it was before #da137310 , or just to add 'YEAR' incurrent text  ?

// Correct behavior of YEAR pattern (#9052)

[Artyom Ivanov]

The `YEAR` pattern has been re-implemented: it now converts a year number to a spelled version (`ONE THOUSAND ONE HUNDRED`) as it done in Oracle.

Currently, the 'YEAR' is implemented only for `datetime to string` conversion (as it done in Oracle), it means `YEAR` has been removed for `string to datetime` conversion, and therefore the new error message is correct, but there is something wrong with the message argument (empty quotes), I will fix it.