The specification for SQLColumns states:
Column 16 CHAR_OCTET_LENGTH (INTEGER)
Contains the maximum length in octets for a character data type column.
For Single Byte character sets, this is the same as COLUMN_SIZE. For
all other data types it is NULL.
However, as currently implemented in psqlodbc-08.02.0300, it is always
encoded as NULL. Patch attached.
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Tilghman