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2.3.12 The IndexBound Structure

Parent class.  NdbIndexScanOperation

Description.  IndexBound is a structure used to describe index scan bounds for NdbRecord scans.

Members.  These are shown in the following table:

Name Type Description
low_key const char* Row containing lower bound for scan (or NULL for scan from the start).
low_key_count Uint32 Number of columns in lower bound (for bounding by partial prefix).
low_inclusive bool True for <= relation, false for <.
high_key const char* Row containing upper bound for scan (or NULL for scan to the end).
high_key_count Uint32 Number of columns in upper bound (for bounding by partial prefix).
high_inclusive bool True for >= relation, false for >.
range_no Uint32 Value to identify this bound; may be read using the get_range_no() method (see Section 2.3.23.4, “NdbIndexScanOperation::get_range_no()”). This value must be less than 8192 (set to zero if it is not being used). For ordered scans, range_no must be strictly increasing for each range, or else the result set will not be sorted correctly.

For more information, see Section 2.3.27, “The NdbRecord Interface”.


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