We have published len_char_size property of statement handle. Why? That's because of nvarchar type.
You have column nvarchar(20) and you get length 40 using PRECISION (it's right because is BYTE length). But we need for our application CHAR length and it's done usign len_char_size. Regards, Jan Mach DERS s.r.o.
DBD-Oracle-1.23.ders.patch
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