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What makes LONG
/ BLOB / MEMO data special?
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Not practical to
pre-allocate fixed size buffers for worst case
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Fetching LONGs -
treat as normal fields after setting:
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$dbh->{LongReadLen} - buffer size to allocate for expected data
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$dbh->{LongTruncOk} - should truncating-to-fit be allowed
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Inserting LONGs
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The limitations
of string literals
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The benefits of
placeholders
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Chunking /
Piecewise processing not supported
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So you're limited
to available memory
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Some drivers
support an unofficial blob_read() method
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