Move forward through the table from the beginning, looking for a row that matches or is greater than a value or full set of values in the current index.
Boolean lookupForward( )
true if successful, false otherwise.
To specify the value for which to search, set the column value for each column in the index. The cursor is left on the first row that matches or is greater than the index value. On failure (no rows greater than the value being looked for) the cursor position is after the last row (isEOF).
Each search must be preceded by a call to the lookupBegin method.
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