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Rule Based SQL Optimizer - Init Commit with filter push down rules (#…
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104 changes: 104 additions & 0 deletions
104
...s/core_external_store_relational_sql_planning/ruleBasedTransformation/multiRuleTests.pure
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| // Copyright 2024 Goldman Sachs | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
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| import meta::external::query::sql::metamodel::*; | ||
| import meta::external::store::relational::sqlPlanning::*; | ||
| import meta::external::store::relational::sqlPlanning::ruleBasedTransformation::*; | ||
| import meta::pure::extension::*; | ||
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| function <<test.Test>> meta::external::store::relational::sqlPlanning::ruleBasedTransformation::multiRuleTests::testJoinAndSubQueryFilterPushDown(): Boolean[1] | ||
| { | ||
| runSqlRuleBasedTransformationTest( | ||
| 'SELECT\n' + | ||
| ' tradetable_0.TradeID AS TradeID,\n' + | ||
| ' tradetable_0.TradeDate AS TradeDate,\n' + | ||
| ' tradetable_0.ProductName AS ProductName\n' + | ||
| 'FROM\n' + | ||
| ' (\n' + | ||
| ' SELECT\n' + | ||
| ' tradetable_1.TradeID AS TradeID,\n' + | ||
| ' tradetable_1.TradeDate AS TradeDate,\n' + | ||
| ' tradetable_3.ProductName AS ProductName\n' + | ||
| ' FROM\n' + | ||
| ' (\n' + | ||
| ' SELECT\n' + | ||
| ' root.ID AS TradeID,\n' + | ||
| ' root.tradeDate AS TradeDate\n' + | ||
| ' FROM\n' + | ||
| ' tradeTable AS root\n' + | ||
| ' ) AS tradetable_1\n' + | ||
| ' INNER JOIN\n' + | ||
| ' (\n' + | ||
| ' SELECT\n' + | ||
| ' root.ID AS TradeID,\n' + | ||
| ' producttable_0.NAME AS ProductName\n' + | ||
| ' FROM\n' + | ||
| ' tradeTable AS root\n' + | ||
| ' LEFT OUTER JOIN\n' + | ||
| ' productSchema.productTable AS producttable_0\n' + | ||
| ' ON (root.prodId = producttable_0.ID)\n' + | ||
| ' ) AS tradetable_3\n' + | ||
| ' ON (tradetable_1.TradeID = tradetable_3.TradeID)\n' + | ||
| ' ) AS tradetable_0\n' + | ||
| 'WHERE\n' + | ||
| ' tradetable_0.TradeID = 1', | ||
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| 'SELECT\n' + | ||
| ' tradetable_0.TradeID AS TradeID,\n' + | ||
| ' tradetable_0.TradeDate AS TradeDate,\n' + | ||
| ' tradetable_0.ProductName AS ProductName\n' + | ||
| 'FROM\n' + | ||
| ' (\n' + | ||
| ' SELECT\n' + | ||
| ' tradetable_1.TradeID AS TradeID,\n' + | ||
| ' tradetable_1.TradeDate AS TradeDate,\n' + | ||
| ' tradetable_3.ProductName AS ProductName\n' + | ||
| ' FROM\n' + | ||
| ' (\n' + | ||
| ' SELECT\n' + | ||
| ' root.ID AS TradeID,\n' + | ||
| ' root.tradeDate AS TradeDate\n' + | ||
| ' FROM\n' + | ||
| ' tradeTable AS root\n' + | ||
| ' WHERE\n' + | ||
| ' root.ID = 1\n' + | ||
| ' ) AS tradetable_1\n' + | ||
| ' INNER JOIN\n' + | ||
| ' (\n' + | ||
| ' SELECT\n' + | ||
| ' root.ID AS TradeID,\n' + | ||
| ' producttable_0.NAME AS ProductName\n' + | ||
| ' FROM\n' + | ||
| ' tradeTable AS root\n' + | ||
| ' LEFT OUTER JOIN\n' + | ||
| ' productSchema.productTable AS producttable_0\n' + | ||
| ' ON (root.prodId = producttable_0.ID)\n' + | ||
| ' WHERE\n' + | ||
| ' root.ID = 1\n' + | ||
| ' ) AS tradetable_3\n' + | ||
| ' ON (tradetable_1.TradeID = tradetable_3.TradeID AND tradetable_3.TradeID = 1)\n' + | ||
| ' WHERE\n' + | ||
| ' tradetable_1.TradeID = 1\n' + | ||
| ' ) AS tradetable_0\n' + | ||
| 'WHERE\n' + | ||
| ' tradetable_0.TradeID = 1', | ||
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| [ | ||
| meta::external::store::relational::sqlPlanning::ruleBasedTransformation::subQueryFilterPushDown::subQueryFilterPushDownRule(), | ||
| meta::external::store::relational::sqlPlanning::ruleBasedTransformation::joinFilterPushDown::joinFilterPushDownRule() | ||
| ] | ||
| ); | ||
| } |
151 changes: 151 additions & 0 deletions
151
...ternal_store_relational_sql_planning/ruleBasedTransformation/ruleBasedTransformation.pure
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,151 @@ | ||
| // Copyright 2024 Goldman Sachs | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
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| import meta::external::query::sql::metamodel::*; | ||
| import meta::external::store::relational::postgresSql::parser::*; | ||
| import meta::external::store::relational::sqlDialectTranslation::*; | ||
| import meta::external::store::relational::sqlDialectTranslation::postgres::*; | ||
| import meta::external::store::relational::sqlPlanning::*; | ||
| import meta::external::store::relational::sqlPlanning::ruleBasedTransformation::*; | ||
| import meta::external::store::relational::sqlPlanning::utils::*; | ||
| import meta::pure::extension::*; | ||
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| Class meta::external::store::relational::sqlPlanning::ruleBasedTransformation::TransformedQuery | ||
| { | ||
| hasChanged: Boolean[1]; | ||
| query: Query[1]; | ||
| } | ||
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| Class <<typemodifiers.abstract>> meta::external::store::relational::sqlPlanning::ruleBasedTransformation::RuleBasedSqlTransformer | ||
| { | ||
| name : String[1]; | ||
| enabledByDefault : Boolean[1]; | ||
| databaseSupport : DatabaseSupport[1]; | ||
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| transformSqlQuery(query: Query[1], config: SqlPlanningConfig[1], debug: DebugContext[1], extensions: Extension[*]) | ||
| { | ||
| fail('Needs to be implemented in sub classes'); ^TransformedQuery(hasChanged = false, query = $query); | ||
| }: TransformedQuery[1]; | ||
| } | ||
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| Class <<typemodifiers.abstract>> meta::external::store::relational::sqlPlanning::ruleBasedTransformation::DatabaseSupport | ||
| { | ||
| isDatabaseTypeSupported(dbType: String[1]) { fail('Needs to be implemented in sub classes'); false; }: Boolean[1]; | ||
| } | ||
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| Class meta::external::store::relational::sqlPlanning::ruleBasedTransformation::AllDatabaseSupport extends DatabaseSupport | ||
| { | ||
| isDatabaseTypeSupported(dbType: String[1]) { true }: Boolean[1]; | ||
| } | ||
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| Class meta::external::store::relational::sqlPlanning::ruleBasedTransformation::LimitedDatabaseSupport extends DatabaseSupport | ||
| { | ||
| supportedDatabaseTypes: String[*]; | ||
| isDatabaseTypeSupported(dbType: String[1]) { $dbType->in($this.supportedDatabaseTypes) }: Boolean[1]; | ||
| } | ||
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| function meta::external::store::relational::sqlPlanning::ruleBasedTransformation::executeRuleBasedTransformersOnQuery(query: Query[1], config: SqlPlanningConfig[1], debug: DebugContext[1], extensions: Extension[*]): Query[1] | ||
| { | ||
| let ruleBasedTransformers = $config->fetchInScopeRuleBasedTransformers($extensions); | ||
| $query->executeRuleBasedTransformersOnQuery($config, $ruleBasedTransformers, $debug, $extensions); | ||
| } | ||
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| function meta::external::store::relational::sqlPlanning::ruleBasedTransformation::executeRuleBasedTransformersOnQuery(query: Query[1], config: SqlPlanningConfig[1], rules: RuleBasedSqlTransformer[*], debug: DebugContext[1], extensions: Extension[*]): Query[1] | ||
| { | ||
| $query->executeRuleBasedTransformersOnQueryTillFixedPointOrMaxIterations($config, $rules, 1, 10, $debug, $extensions).query | ||
| } | ||
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| function <<access.private>> meta::external::store::relational::sqlPlanning::ruleBasedTransformation::executeRuleBasedTransformersOnQueryTillFixedPointOrMaxIterations(query: Query[1], config: SqlPlanningConfig[1], rules: RuleBasedSqlTransformer[*], currentIteration: Integer[1], maxIterations: Integer[1], debug: DebugContext[1], extensions: Extension[*]): TransformedQuery[1] | ||
| { | ||
| if ($currentIteration > $maxIterations, | ||
| | ^TransformedQuery(hasChanged = false, query = $query), | ||
| | | ||
| let debugPrefix = '[RuleBasedTransformation] Iteration (' + $currentIteration->toString() + '/' + $maxIterations->toString() + ')'; | ||
| print(if(!$debug.debug, |'', | $debug.space + range(40)->map(x | '-')->joinStrings() + $debugPrefix + format(' (%t{yyyy-MM-dd HH:mm::ss.SSS})', now()) + range(40)->map(x | '-')->joinStrings() + '\n')); | ||
| print(if(!$debug.debug, |'', | $debug.space + 'Rules: ' + $rules.name->joinStrings('[', ', ', ']') + '\n')); | ||
| print(if(!$debug.debug, |'', | $debug.space + 'Starting Query: ' + $query->printDebugQuery($config, $extensions) + '\n')); | ||
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| let transformed = $rules->fold({t, agg | | ||
| print(if(!$debug.debug, |'', | $debug->indent().space + range(50)->map(x | '-')->joinStrings() + '\n')); | ||
| print(if(!$debug.debug, |'', | $debug->indent().space + 'Running rule: ' + $t.name + '\n')); | ||
| let res = $t->executeSubTypeQualifierAndCast('transformSqlQuery', [list($agg.query), list($config), list($debug->indent()), list($extensions)], @TransformedQuery); | ||
| if ($res.hasChanged, | ||
| | print(if(!$debug.debug, |'', | $debug->indent().space + 'Rule Result: Query Changed\n')); | ||
| print(if(!$debug.debug, |'', | $debug->indent().space + 'Updated Query: ' + $res.query->printDebugQuery($config, $extensions) + '\n'));, | ||
| | print(if(!$debug.debug, |'', | $debug->indent().space + 'Rule Result: Query Unchanged\n')); | ||
| ); | ||
| ^TransformedQuery(hasChanged = $res.hasChanged || $agg.hasChanged, query = $res.query); | ||
| }, ^TransformedQuery(hasChanged = false, query = $query)); | ||
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| print(if(!$debug.debug, |'', | $debug->indent().space + range(50)->map(x | '-')->joinStrings() + '\n')); | ||
| if ($transformed.hasChanged, | ||
| | print(if(!$debug.debug, |'', | $debug.space + 'Iteration Result: Query Changed\n')); | ||
| print(if(!$debug.debug, |'', | $debug.space + 'Updated Query: ' + $transformed.query->printDebugQuery($config, $extensions) + '\n'));, | ||
| | print(if(!$debug.debug, |'', | $debug.space + 'Iteration Result: Query Unchanged\n')); | ||
| ); | ||
| print(if(!$debug.debug, |'', | $debug.space + range(40)->map(x | '-')->joinStrings() + $debugPrefix + format(' (%t{yyyy-MM-dd HH:mm::ss.SSS})', now()) + range(40)->map(x | '-')->joinStrings() + '\n\n')); | ||
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| if ($transformed.hasChanged, | ||
| | $transformed.query->executeRuleBasedTransformersOnQueryTillFixedPointOrMaxIterations($config, $rules, $currentIteration + 1, $maxIterations, $debug, $extensions), | ||
| | $transformed | ||
| ); | ||
| ) | ||
| } | ||
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| function <<access.private>> meta::external::store::relational::sqlPlanning::ruleBasedTransformation::fetchInScopeRuleBasedTransformers(config: SqlPlanningConfig[1], extensions: Extension[*]): RuleBasedSqlTransformer[*] | ||
| { | ||
| let defaultTransformers = meta::external::store::relational::sqlPlanning::ruleBasedTransformation::defaultRuleBasedSqlTransformers(); | ||
| let extensionTransformers = $extensions->map(e | $e.moduleExtension('SqlPlanning')->cast(@SqlPlanningModuleExtension).sqlPlanning_ruleBasedTransformation_extraRuleBasedSqlTransformers); | ||
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| let allTransformers = $defaultTransformers->concatenate($extensionTransformers); | ||
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| let filteredTransformers = $allTransformers->filter({t | | ||
| if ($t.databaseSupport->meta::external::store::relational::sqlPlanning::utils::executeSubTypeQualifierAndCast('isDatabaseTypeSupported', list($config.dbType), @Boolean) == true, | ||
| | // Transformer supported for database type | ||
| if ($t.enabledByDefault, | ||
| | // TODO: Check if excluded in connection | ||
| true, | ||
| | // TODO: Check if included in connection | ||
| false | ||
| ), | ||
| | false | ||
| ) | ||
| }); | ||
| } | ||
|
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| function meta::external::store::relational::sqlPlanning::ruleBasedTransformation::defaultRuleBasedSqlTransformers(): RuleBasedSqlTransformer[*] | ||
| { | ||
| [ | ||
| // meta::external::store::relational::sqlPlanning::ruleBasedTransformation::filterPushDown::filterPushDownSqlTransformer() | ||
| ] | ||
| } | ||
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| function meta::external::store::relational::sqlPlanning::ruleBasedTransformation::runSqlRuleBasedTransformationTest(originalQuery: String[1], expectedQuery: String[1], rules: RuleBasedSqlTransformer[*]): Boolean[1] | ||
| { | ||
| runSqlRuleBasedTransformationTest($originalQuery, $expectedQuery, $rules, ^SqlPlanningConfig(dbType = 'Postgres'), postgresSqlDialectExtension()) | ||
| } | ||
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| function meta::external::store::relational::sqlPlanning::ruleBasedTransformation::runSqlRuleBasedTransformationTest(originalQuery: String[1], expectedQuery: String[1], rules: RuleBasedSqlTransformer[*], config: SqlPlanningConfig[1], extensions: Extension[*]): Boolean[1] | ||
| { | ||
| let debug = noDebug(); | ||
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| let parsedQuery = parseSqlStatement($originalQuery)->cast(@Query); | ||
| print(if(!$debug.debug, |'', | $debug.space + '>[RuleBasedTransformationTest] Original Query: \n' + $parsedQuery->printDebugQuery($config, true, $extensions) + '\n')); | ||
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| let transformedQuery = $parsedQuery->executeRuleBasedTransformersOnQuery($config, $rules, $debug, $extensions); | ||
| let resultSqlString = $transformedQuery->printDebugQuery($config, true, $extensions); | ||
| print(if(!$debug.debug, |'', | $debug.space + '>[RuleBasedTransformationTest] Transformed Query: \n' + $resultSqlString + '\n')); | ||
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| assertEquals($expectedQuery, $resultSqlString); | ||
| } |
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