static IndexTable createIndexTable(Table primaryTable, int indexColumn) throws IOException {
		if (primaryTable.getRecordCount() != 0) {
			throw new AssertException();
		}
		return new FieldIndexTable(primaryTable, indexColumn);
	}
Create a new index table for an empty primary table.
@param primaryTable primary table to be indexed
@param indexColumn primary table column to be indexed
@return IndexTable new index table
@throws IOException thrown if IO error occurs
Ghidra/Framework/DB/src/main/java/db/IndexTable.java