public int compare(SqlNode o1, SqlNode o2) {
final SqlParserPos pos0 = o1.getParserPosition();
final SqlParserPos pos1 = o2.getParserPosition();
int c = -Utilities.compare(
pos0.getLineNum(), pos1.getLineNum());
if (c != 0) {
return c;
}
return -Utilities.compare(
pos0.getColumnNum(), pos1.getColumnNum());
}
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