mrhhsg commented on PR #10355:
URL: https://github.com/apache/doris/pull/10355#issuecomment-1166322866
> @mrhhsg Hi, can you help check the changes as below, involved from your
commits recently, which will lead to the function pushdown not work in this PR
in vectorized mode.
>
> BTW, the pushdown function of like / not like can get 2x performance gain
in vectorized execution engine.
>
> ```
> bool SegmentIterator::_can_evaluated_by_vectorized(ColumnPredicate*
predicate) {
> auto cid = predicate->column_id();
> FieldType field_type = _schema.column(cid)->type();
> switch (predicate->type()) {
> case PredicateType::EQ:
> case PredicateType::NE:
> case PredicateType::LE:
> case PredicateType::LT:
> case PredicateType::GE:
> case PredicateType::GT: {
> if (field_type == OLAP_FIELD_TYPE_VARCHAR || field_type ==
OLAP_FIELD_TYPE_CHAR ||
> field_type == OLAP_FIELD_TYPE_STRING) {
> return config::enable_low_cardinality_optimize &&
> _column_iterators[cid]->is_all_dict_encoding();
> } else if (field_type == OLAP_FIELD_TYPE_DECIMAL) {
> return false;
> }
> return true;
> }
> default:
> return false;
> }
> }
> ```
@compasses I am not sure, this logic should be just the same as the previous.
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