lob->erase -- Erases a specified portion of the internal LOB data
Syntax
int lob->erase ( [int offset [, int length]] )
Erases a specified portion of the internal LOB data starting at a
specified offset. Parameters
length and offset are optional.
lob->erase() erases all LOB data by default.
For BLOBs, erasing means that the existing LOB value is overwritten with
zero-bytes. For CLOBs, the existing LOB value is overwritten with spaces.
lob->erase() returns the actual number of
characters/bytes erased or FALSE in case of error.
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