BAD PLAN with using LEFT OUTER JOIN in SUBSELECT [CORE3283]

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Submitted by: Alexander Ryabushkin (aryab)

Is related to CORE3103
Is related to QA258

CREATE TABLE TREE_SUBJ (
ID_FOLDER INTEGER NOT NULL PRIMARY KEY);

INSERT INTO TREE_SUBJ (ID_FOLDER) VALUES (0);
INSERT INTO TREE_SUBJ (ID_FOLDER) VALUES (1);
INSERT INTO TREE_SUBJ (ID_FOLDER) VALUES (2);
INSERT INTO TREE_SUBJ (ID_FOLDER) VALUES (3);
INSERT INTO TREE_SUBJ (ID_FOLDER) VALUES (4);
INSERT INTO TREE_SUBJ (ID_FOLDER) VALUES (5);
commit;

select T1.ID_FOLDER from TREE_SUBJ T1
where T1.ID_FOLDER =
(select first 1 T3.ID_FOLDER from TREE_SUBJ T2
LEFT OUTER JOIN TREE_SUBJ T3 on( T3.ID_FOLDER > T2.ID_FOLDER)
where (T2.ID_FOLDER = 3) order by T3.ID_FOLDER)
/* FB 2.5 BAD PLAN with LEFT
PLAN SORT (JOIN (T2 INDEX (RDB$PRIMARY1), T3 INDEX (RDB$PRIMARY1)))
PLAN (T1 NATURAL) */

/* FB 2.1 OK PLAN with LEFT
PLAN SORT (JOIN (T2 INDEX (RDB$PRIMARY1), T3 INDEX (RDB$PRIMARY1)))
PLAN (T1 INDEX (RDB$PRIMARY1)) */

select T1.ID_FOLDER from TREE_SUBJ T1
where T1.ID_FOLDER =
(select first 1 T3.ID_FOLDER from TREE_SUBJ T2
JOIN TREE_SUBJ T3 on( T3.ID_FOLDER > T2.ID_FOLDER)
where (T2.ID_FOLDER = 3) order by T3.ID_FOLDER)
/* FB 2.5, 2.1 OK PLAN with JOIN
PLAN SORT (JOIN (T2 INDEX (RDB$PRIMARY1), T3 INDEX (RDB$PRIMARY1)))
PLAN (T1 INDEX (RDB$PRIMARY1))
*/

Commits: 676b99c a70ec41 8815c71 5c3894e

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Modified by: @dyemanov

assignee: Dmitry Yemanov [ dimitr ]

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Modified by: @dyemanov

status: Open [ 1 ] => In Progress [ 3 ]

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Modified by: @dyemanov

Link: This issue is related to CORE3103 [ CORE3103 ]

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Modified by: @dyemanov

status: In Progress [ 3 ] => Open [ 1 ]

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Modified by: @dyemanov

Version: 2.0.6 [ 10303 ]

Version: 3.0 Initial [ 10301 ]

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Modified by: @dyemanov

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 2.5.1 [ 10333 ]

Fix Version: 3.0 Alpha 1 [ 10331 ]

Fix Version: 2.0.7 [ 10390 ]

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Modified by: @pcisar

Link: This issue is related to QA258 [ QA258 ]

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Modified by: @pavel-zotov

status: Resolved [ 5 ] => Resolved [ 5 ]

QA Status: Done successfully

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Commented by: @pcisar

Test created.

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Modified by: @pcisar

status: Resolved [ 5 ] => Closed [ 6 ]