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[Maria-developers] New (by Psergey): MariaDB 5.3 (94)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: MariaDB 5.3 CREATION DATE..: Sun, 28 Feb 2010, 14:08 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-Sprint TASK ID........: 94 (http://askmonty.org/worklog/?tid=94) VERSION........: Server-5.3 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: DESCRIPTION: This is an umbrella task for all tasks in MariaDB 5.3 ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] New (by Psergey): MariaDB 5.3 (94)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: MariaDB 5.3 CREATION DATE..: Sun, 28 Feb 2010, 14:08 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-Sprint TASK ID........: 94 (http://askmonty.org/worklog/?tid=94) VERSION........: Server-5.3 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: DESCRIPTION: This is an umbrella task for all tasks in MariaDB 5.3 ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] Updated (by Psergey): Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE (92)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE CREATION DATE..: Sun, 28 Feb 2010, 14:02 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-RawIdeaBin TASK ID........: 92 (http://askmonty.org/worklog/?tid=92) VERSION........: WorkLog-3.4 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: -=-=(Psergey - Sun, 28 Feb 2010, 14:03)=-=- Observers changed: Psergey,Igor,Timour DESCRIPTION: Consider the following case: SELECT * FROM big_table WHERE oe IN (SELECT ie FROM table_with_few_groups WHERE ... GROUP BY group_col) AND ... Here the best way to execute the query is: Materialize the subquery; # now run the join: for each record R1 in materialized table for each record R2 in big_table such that oe=R1 pass R2 to output Semi-join materialization supports such strategy with SJM-Scan strategy. This WL entry is about adding support for such strategies for non-semijoin subqueries. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] Updated (by Psergey): Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE (92)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE CREATION DATE..: Sun, 28 Feb 2010, 14:02 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-RawIdeaBin TASK ID........: 92 (http://askmonty.org/worklog/?tid=92) VERSION........: WorkLog-3.4 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: -=-=(Psergey - Sun, 28 Feb 2010, 14:03)=-=- Observers changed: Psergey,Igor,Timour DESCRIPTION: Consider the following case: SELECT * FROM big_table WHERE oe IN (SELECT ie FROM table_with_few_groups WHERE ... GROUP BY group_col) AND ... Here the best way to execute the query is: Materialize the subquery; # now run the join: for each record R1 in materialized table for each record R2 in big_table such that oe=R1 pass R2 to output Semi-join materialization supports such strategy with SJM-Scan strategy. This WL entry is about adding support for such strategies for non-semijoin subqueries. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] Updated (by Psergey): Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE (92)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE CREATION DATE..: Sun, 28 Feb 2010, 14:02 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-RawIdeaBin TASK ID........: 92 (http://askmonty.org/worklog/?tid=92) VERSION........: WorkLog-3.4 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: -=-=(Psergey - Sun, 28 Feb 2010, 14:03)=-=- Observers changed: Psergey,Igor,Timour DESCRIPTION: Consider the following case: SELECT * FROM big_table WHERE oe IN (SELECT ie FROM table_with_few_groups WHERE ... GROUP BY group_col) AND ... Here the best way to execute the query is: Materialize the subquery; # now run the join: for each record R1 in materialized table for each record R2 in big_table such that oe=R1 pass R2 to output Semi-join materialization supports such strategy with SJM-Scan strategy. This WL entry is about adding support for such strategies for non-semijoin subqueries. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] Updated (by Psergey): Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE (92)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE CREATION DATE..: Sun, 28 Feb 2010, 14:02 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-RawIdeaBin TASK ID........: 92 (http://askmonty.org/worklog/?tid=92) VERSION........: WorkLog-3.4 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: -=-=(Psergey - Sun, 28 Feb 2010, 14:03)=-=- Observers changed: Psergey,Igor,Timour DESCRIPTION: Consider the following case: SELECT * FROM big_table WHERE oe IN (SELECT ie FROM table_with_few_groups WHERE ... GROUP BY group_col) AND ... Here the best way to execute the query is: Materialize the subquery; # now run the join: for each record R1 in materialized table for each record R2 in big_table such that oe=R1 pass R2 to output Semi-join materialization supports such strategy with SJM-Scan strategy. This WL entry is about adding support for such strategies for non-semijoin subqueries. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] New (by Psergey): Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE (92)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE CREATION DATE..: Sun, 28 Feb 2010, 14:02 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: CATEGORY.......: Server-RawIdeaBin TASK ID........: 92 (http://askmonty.org/worklog/?tid=92) VERSION........: WorkLog-3.4 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: DESCRIPTION: Consider the following case: SELECT * FROM big_table WHERE oe IN (SELECT ie FROM table_with_few_groups WHERE ... GROUP BY group_col) AND ... Here the best way to execute the query is: Materialize the subquery; # now run the join: for each record R1 in materialized table for each record R2 in big_table such that oe=R1 pass R2 to output Semi-join materialization supports such strategy with SJM-Scan strategy. This WL entry is about adding support for such strategies for non-semijoin subqueries. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] New (by Psergey): Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE (92)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: Inside-out execution for non-semijoin materialized subqueries that are AND-parts of the WHERE CREATION DATE..: Sun, 28 Feb 2010, 14:02 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: CATEGORY.......: Server-RawIdeaBin TASK ID........: 92 (http://askmonty.org/worklog/?tid=92) VERSION........: WorkLog-3.4 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: 0 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: DESCRIPTION: Consider the following case: SELECT * FROM big_table WHERE oe IN (SELECT ie FROM table_with_few_groups WHERE ... GROUP BY group_col) AND ... Here the best way to execute the query is: Materialize the subquery; # now run the join: for each record R1 in materialized table for each record R2 in big_table such that oe=R1 pass R2 to output Semi-join materialization supports such strategy with SJM-Scan strategy. This WL entry is about adding support for such strategies for non-semijoin subqueries. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] New (by Psergey): Subqueries: cost-based choice between Materialization and IN->EXISTS transformation (90)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: cost-based choice between Materialization and IN->EXISTS transformation CREATION DATE..: Sun, 28 Feb 2010, 13:45 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-RawIdeaBin TASK ID........: 90 (http://askmonty.org/worklog/?tid=90) VERSION........: Server-5.3 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: -1 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: DESCRIPTION: For uncorrelated IN subqueries that can't be converted to semi-joins it is necessary to make a cost-based choice between IN->EXISTS and Materialization strategies. Both strategies handle two cases: 1. A simple case w/o NULLs handling 2. Handling NULLs. This WL is about making cost-based decision for #1. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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[Maria-developers] New (by Psergey): Subqueries: cost-based choice between Materialization and IN->EXISTS transformation (90)
by worklog-noreply＠askmonty.org 28 Feb '10

28 Feb '10

----------------------------------------------------------------------- WORKLOG TASK -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- TASK...........: Subqueries: cost-based choice between Materialization and IN->EXISTS transformation CREATION DATE..: Sun, 28 Feb 2010, 13:45 SUPERVISOR.....: Monty IMPLEMENTOR....: COPIES TO......: Igor, Psergey, Timour CATEGORY.......: Server-RawIdeaBin TASK ID........: 90 (http://askmonty.org/worklog/?tid=90) VERSION........: Server-5.3 STATUS.........: Un-Assigned PRIORITY.......: 60 WORKED HOURS...: 0 ESTIMATE.......: -1 (hours remain) ORIG. ESTIMATE.: 0 PROGRESS NOTES: DESCRIPTION: For uncorrelated IN subqueries that can't be converted to semi-joins it is necessary to make a cost-based choice between IN->EXISTS and Materialization strategies. Both strategies handle two cases: 1. A simple case w/o NULLs handling 2. Handling NULLs. This WL is about making cost-based decision for #1. ESTIMATED WORK TIME ESTIMATED COMPLETION DATE ----------------------------------------------------------------------- WorkLog (v3.5.9)

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