thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-22 07:31:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #4598 from 4ertus2/ast

Browse Source 
Fix CrossToInnerJoin rewrite
This commit is contained in:
alexey-milovidov 2019-03-06 02:54:30 +03:00 committed by GitHub
commit 812d563e5f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
dbms/src/Interpreters/CrossToInnerJoinVisitor.cpp
View File

@ -192,6 +192,9 @@ void CrossToInnerJoinMatcher::visit(ASTSelectQuery & select, ASTPtr & ast, Data
using CheckExpressionMatcher = OneTypeMatcher<CheckExpressionVisitorData, false>;
using CheckExpressionVisitor = InDepthNodeVisitor<CheckExpressionMatcher, true>;
if (!select.where_expression)
return;
std::vector<DatabaseAndTableWithAlias> table_names;
ASTPtr ast_join = getCrossJoin(select, table_names);
if (!ast_join)
@ -215,10 +218,10 @@ void CrossToInnerJoinMatcher::visit(ASTSelectQuery & select, ASTPtr & ast, Data
select.where_expression.reset();
join.children.push_back(join.on_expression);
ast = ast->clone(); /// rewrite AST in right manner
data.done = true;
}
ast = ast->clone(); /// rewrite AST in right manner
data.done = true;
}
}

4
dbms/tests/queries/0_stateless/00826_cross_to_inner_join.reference
View File

@ -1,3 +1,5 @@
0 0
0 0
cross
1 1 1 1
1 1 1 2
@ -67,7 +69,7 @@ Explain ParsedAST (children 1)\n SelectWithUnionQuery (children 1)\n Expression
Explain ParsedAST (children 1)\n SelectWithUnionQuery (children 1)\n ExpressionList (children 1)\n SelectQuery (children 2)\n ExpressionList (children 1)\n Asterisk\n TablesInSelectQuery (children 2)\n TablesInSelectQueryElement (children 1)\n TableExpression (children 1)\n Identifier t1 (alias x)\n TablesInSelectQueryElement (children 2)\n TableJoin (children 1)\n Function and (children 1)\n ExpressionList (children 2)\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier x.a\n Identifier y.a\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier x.b\n Identifier y.b\n TableExpression (children 1)\n Identifier t1 (alias y)\n
cross one table expr
Explain ParsedAST (children 1)\n SelectWithUnionQuery (children 1)\n ExpressionList (children 1)\n SelectQuery (children 3)\n ExpressionList (children 1)\n Asterisk\n TablesInSelectQuery (children 2)\n TablesInSelectQueryElement (children 1)\n TableExpression (children 1)\n Identifier t1\n TablesInSelectQueryElement (children 2)\n TableExpression (children 1)\n Identifier t2\n TableJoin\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier t1.a\n Identifier t1.b\n
Explain ParsedAST (children 1)\n SelectWithUnionQuery (children 1)\n ExpressionList (children 1)\n SelectQuery (children 3)\n ExpressionList (children 1)\n Asterisk\n TablesInSelectQuery (children 2)\n TablesInSelectQueryElement (children 1)\n TableExpression (children 1)\n Identifier t1\n TablesInSelectQueryElement (children 2)\n TableJoin\n TableExpression (children 1)\n Identifier t2\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier t1.a\n Identifier t1.b\n
Explain ParsedAST (children 1)\n SelectWithUnionQuery (children 1)\n ExpressionList (children 1)\n SelectQuery (children 3)\n ExpressionList (children 1)\n Asterisk\n TablesInSelectQuery (children 2)\n TablesInSelectQueryElement (children 1)\n TableExpression (children 1)\n Identifier t1\n TablesInSelectQueryElement (children 2)\n TableExpression (children 1)\n Identifier t2\n TableJoin\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier t1.a\n Identifier t1.b\n
cross multiple ands
Explain ParsedAST (children 1)\n SelectWithUnionQuery (children 1)\n ExpressionList (children 1)\n SelectQuery (children 3)\n ExpressionList (children 1)\n Asterisk\n TablesInSelectQuery (children 2)\n TablesInSelectQueryElement (children 1)\n TableExpression (children 1)\n Identifier t1\n TablesInSelectQueryElement (children 2)\n TableExpression (children 1)\n Identifier t2\n TableJoin\n Function and (children 1)\n ExpressionList (children 2)\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier t1.a\n Identifier t2.a\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier t1.b\n Identifier t2.b\n
Explain ParsedAST (children 1)\n SelectWithUnionQuery (children 1)\n ExpressionList (children 1)\n SelectQuery (children 2)\n ExpressionList (children 1)\n Asterisk\n TablesInSelectQuery (children 2)\n TablesInSelectQueryElement (children 1)\n TableExpression (children 1)\n Identifier t1\n TablesInSelectQueryElement (children 2)\n TableJoin (children 1)\n Function and (children 1)\n ExpressionList (children 2)\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier t1.a\n Identifier t2.a\n Function equals (children 1)\n ExpressionList (children 2)\n Identifier t1.b\n Identifier t2.b\n TableExpression (children 1)\n Identifier t2\n

5
dbms/tests/queries/0_stateless/00826_cross_to_inner_join.sql
View File

@ -1,6 +1,11 @@
SET enable_debug_queries = 1;
USE test;
set allow_experimental_cross_to_join_conversion = 0;
select * from system.one cross join system.one;
set allow_experimental_cross_to_join_conversion = 1;
select * from system.one cross join system.one;
DROP TABLE IF EXISTS t1;
DROP TABLE IF EXISTS t2;