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描述
Bug Report
Please answer these questions before submitting your issue. Thanks!
1. Minimal reproduce step (Required)
- import bookshop https://docs.pingcap.com/tidb/stable/dev-guide-bookshop-schema-design#import-table-structures-and-data
- create temp table top_50_eldest_authors
CREATE TEMPORARY TABLE top_50_eldest_authors (
id BIGINT,
name VARCHAR(255),
age INT,
PRIMARY KEY(id)
);
- execute
explain format = "dot"
WITH top_50_eldest_authors_cte AS (
SELECT a.id, a.name, (IFNULL(a.death_year, YEAR(NOW())) - a.birth_year) AS age
FROM authors a
ORDER BY age DESC
LIMIT 50
)
SELECT
ANY_VALUE(ta.id) AS author_id,
ANY_VALUE(ta.age) AS author_age,
ANY_VALUE(ta.name) AS author_name,
COUNT(*) AS books
FROM top_50_eldest_authors_cte ta
LEFT JOIN book_authors ba ON ta.id = ba.author_id
GROUP BY ta.id;
2. What did you expect to see? (Required)
show CTE
-----------------------------------------------------------------------------------------------------------------------------+
| id | estRows | task | access object | operator info |
+--------------------------------------+----------+-----------+---------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Projection_23 | 40.00 | root | | any_value(bookshop.authors.id)->Column#13, any_value(Column#9)->Column#14, any_value(bookshop.authors.name)->Column#15, Column#12 |
| └─HashAgg_24 | 40.00 | root | | group by:bookshop.authors.id, funcs:count(1)->Column#12, funcs:firstrow(bookshop.authors.id)->bookshop.authors.id, funcs:firstrow(bookshop.authors.name)->bookshop.authors.name, funcs:firstrow(Column#9)->Column#9 |
| └─HashJoin_26 | 61.95 | root | | left outer join, equal:[eq(bookshop.authors.id, bookshop.book_authors.author_id)] |
| ├─CTEFullScan_30(Build) | 40.00 | root | CTE:ta | data:CTE_0 |
| └─TableReader_29(Probe) | 20000.00 | root | | data:TableFullScan_28 |
| └─TableFullScan_28 | 20000.00 | cop[tikv] | table:ba | keep order:false |
| CTE_0 | 40.00 | root | | Non-Recursive CTE |
| └─Selection_12(Seed Part) | 40.00 | root | | 1 |
| └─Projection_13 | 50.00 | root | | bookshop.authors.id, bookshop.authors.name, minus(ifnull(bookshop.authors.death_year, 2022), bookshop.authors.birth_year)->Column#6 |
| └─Projection_20 | 50.00 | root | | bookshop.authors.id, bookshop.authors.name, bookshop.authors.birth_year, bookshop.authors.death_year |
| └─TopN_14 | 50.00 | root | | Column#19:desc, offset:0, count:50 |
| └─Projection_21 | 50.00 | root | | bookshop.authors.id, bookshop.authors.name, bookshop.authors.birth_year, bookshop.authors.death_year, minus(ifnull(bookshop.authors.death_year, 2022), bookshop.authors.birth_year)->Column#19 |
| └─TableReader_19 | 50.00 | root | | data:TopN_18 |
| └─TopN_18 | 50.00 | cop[tikv] | | minus(ifnull(bookshop.authors.death_year, 2022), bookshop.authors.birth_year):desc, offset:0, count:50 |
| └─TableFullScan_17 | 20000.00 | cop[tikv] | table:a | keep order:false |
+--------------------------------------+----------+-----------+---------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
3. What did you see instead (Required)
not include CTE
|
digraph Projection_23 {
subgraph cluster23{
node [style=filled, color=lightgrey]
color=black
label = "root"
"Projection_23" -> "HashAgg_24"
"HashAgg_24" -> "HashJoin_26"
"HashJoin_26" -> "CTEFullScan_30"
"HashJoin_26" -> "TableReader_29"
}
subgraph cluster28{
node [style=filled, color=lightgrey]
color=black
label = "cop"
"TableFullScan_28"
}
"TableReader_29" -> "TableFullScan_28"
}
|
4. What is your TiDB version? (Required)
6.1.0