How can I (if at all) use/add a new optimizer (in SQL) without defining a new pipe (in C code)?
Thanks, Stefan
On Sat, Feb 18, 2012 at 06:37:44PM +0100, Martin Kersten wrote:
The new optimizer infrastructure returns the name of the pipe, not its content. The definitions can be obtained from the system view:
select * from optimizers();
can be used to get the expanded form.
On 2/18/12 6:11 PM, Stefan Manegold wrote:
Changeset: 62a52aaf4241 for MonetDB URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=62a52aaf4241 Modified Files: monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.sql monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.stable.out Branch: default Log Message:
test opt_sql_append: trying to upgrade to new optimizer framework
However, setting SQL variable "optimizer" to a MAL snippert rather than an optimizer pipeline name does not seem to work (yet?) ...
diffs (39 lines):
diff --git a/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.sql b/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.sql --- a/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.sql +++ b/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.sql @@ -1,7 +1,9 @@ create table ttt (a int, b int, c int); select optimizer; explain copy into ttt from '/tmp/xyz'; -set optimizer = substring(optimizer,0,length(optimizer)-length('garbageCollector')) || 'sql_append,garbageCollector'; +declare opt_pipe_name string; set opt_pipe_name = ( select optimizer ); +declare opt_pipe_def string; set opt_pipe_def = ( select def from optimizers() where name = opt_pipe_name ); +set optimizer = substring(opt_pipe_def,0,length(opt_pipe_def)-length('optimizer.garbageCollector();')) || 'optimizer.sql_append();optimizer.garbageCollector();'; select optimizer; explain copy into ttt from '/tmp/xyz'; drop table ttt; diff --git a/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.stable.out b/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.stable.out --- a/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.stable.out +++ b/monetdb5/extras/mal_optimizer_template/Tests/opt_sql_append.stable.out @@ -49,8 +49,8 @@ Ready. % . # table_name % single_value # name % varchar # type -% 188 # length -[ "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,commonTerms,joinPath,reorder,deadcode,reduce,dataflow,history,multiplex,accumulators,garbageCollector" ] +% 12 # length +[ "default_pipe" ] #explain copy into ttt from '/tmp/xyz'; % .explain # table_name % mal # name @@ -69,8 +69,8 @@ end s2_1; % . # table_name % single_value # name % varchar # type -% 199 # length -[ "inline,remap,evaluate,costModel,coercions,emptySet,aliases,mitosis,mergetable,deadcode,commonTerms,joinPath,reorder,deadcode,reduce,dataflow,history,multiplex,accumulators,sql_append,garbageCollector" ] +% 452 # length +[ "optimizer.inline();optimizer.remap();optimizer.evaluate();optimizer.costModel();optimizer.coercions();optimizer.emptySet();optimizer.aliases();optimizer.mitosis();optimizer.mergetable();optimizer.deadcode();optimizer.commonTerms();optimizer.joinPath();optimizer.reorder();optimizer.deadcode();optimizer.reduce();optimizer.dataflow();optimizer.history();optimizer.multiplex();optimizer.accumulators();optimizer.sql_append();optimizer.garbageCollector();" ] #explain copy into ttt from '/tmp/xyz'; % .explain # table_name % mal # name _______________________________________________ Checkin-list mailing list Checkin-list@monetdb.org http://mail.monetdb.org/mailman/listinfo/checkin-list
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