Enables handling of binary column data. ODBC SQL types affected are BINARY, VARBINARY, and LONGVARBINARY.
When binary SQL data is converted to character C data, each byte (8 bits) of source data is represented as two ASCII characters. These characters are the ASCII character representation of the number in its hexadecimal form. For example, a binary 00000001 is converted to "01" and a binary 11111111 is converted to "FF".
binmode | longreadlen | result |
---|---|---|
ODBC_BINMODE_PASSTHRU | 0 | passthru |
ODBC_BINMODE_RETURN | 0 | passthru |
ODBC_BINMODE_CONVERT | 0 | passthru |
ODBC_BINMODE_PASSTHRU | 0 | passthru |
ODBC_BINMODE_PASSTHRU | >0 | passthru |
ODBC_BINMODE_RETURN | >0 | return as is |
ODBC_BINMODE_CONVERT | >0 | return as char |
If odbc_fetch_into() is used, passthru means that an empty string is returned for these columns.
The result identifier.
If result_id
is 0, the settings apply as default for new results.
Note: Default for longreadlen is 4096 and
mode
defaults to ODBC_BINMODE_RETURN. Handling of binary long columns is also affected by odbc_longreadlen().
Possible values for mode
are:
-
ODBC_BINMODE_PASSTHRU
: Passthru BINARY data -
ODBC_BINMODE_RETURN
: Return as is -
ODBC_BINMODE_CONVERT
: Convert to char and return
Returns TRUE
on success or FALSE
on failure.
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