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Find a record with a key value greater than the key given
METHOD SeekGt ( uValue ) CLASS BtServer
<uValue> One key value or an optional array of key values to seek for. The
type of the values must match the (VO equivalent of) the btrieve
types that the index consists of
LOGIC Was the key found
The SeekGt operation retrieves a record in which the field specified by the key number has the next greater value than the one in the key buffer. If the key allows duplicates, this operation retrieves the first record (chronologically) of the group with the same key values.
BtServer:SeekGt() does not check for active scopes !