这是D5的Readme.txt中的
BLOB limitations
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[Enterprise and Professional editions only]
When using ODBC, BLOB size is limited to
1,000,000 (1 million, not 1 MB) bytes.
Attempting to post a larger record generates an
"Invalid Blob Size" error.
You may experience more severe limitations
using BLOBs with SQL Anywhere. When using
that product, problems have been encountered
when trying to read BLOBs as small as 24-32K
in a dead query.