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Select char_length(cast('123456789 1' as varchar(10))) from rdb$database. Получаем: Exception ... string truncation Т.е. пробел мы обрезать можем, а другие символы нет. Так и должно быть или нет?
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Then in the second table I have select ..., null as opt from... I know that I could have an empty string with '' as
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union all select null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null
A field with a NULL value is a field with no value. If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this