Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

count函数在某些情况下返回不正确 #11

Closed
yjmyzz opened this issue Feb 19, 2016 · 1 comment
Closed

count函数在某些情况下返回不正确 #11

yjmyzz opened this issue Feb 19, 2016 · 1 comment
Labels
type: bug

Comments

@yjmyzz
Copy link

yjmyzz commented Feb 19, 2016

参考示例代码里的场景，求t_order的count总数：

使用mybatis，分成3个库，每个库里分2张表，每个表里插入2条记录，正确的count值应该是12

    <select id="queryCount" resultType="int">
        select count(*) from t_order
    </select>

仅返回一个int型整数，返回的数值，仅为某条子查询的count值，没有累加，下面是输出的日志：

15:00:28,341 <com.dangdang.ddframe.rdb.sharding.parser.SQLParserFactory> DEBUG [main]: Logic SQL: select count(0) from t_order
15:00:28,391 <com.dangdang.ddframe.rdb.sharding.parser.SQLParserFactory> TRACE [main]: Get com.alibaba.druid.sql.ast.statement.SQLSelectStatement SQL Statement
15:00:28,783 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 visit node: class com.alibaba.druid.sql.ast.statement.SQLSelectStatement
15:00:28,822 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 visit argument: SELECT COUNT(0)
FROM t_order
15:00:28,822 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 visit node: class com.alibaba.druid.sql.ast.statement.SQLSelect
15:00:28,823 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 visit argument: com.alibaba.druid.sql.ast.statement.SQLSelect@1d60737e
15:00:28,823 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 visit node: class com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock
15:00:28,823 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 visit argument: com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock@c7242101
15:00:28,856 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 visit node: class com.alibaba.druid.sql.ast.statement.SQLSelectItem
15:00:28,856 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 visit argument: com.alibaba.druid.sql.ast.expr.SQLAggregateExpr@640d1fb2
15:00:28,856 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 visit node: class com.alibaba.druid.sql.ast.expr.SQLAggregateExpr
15:00:28,856 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 visit argument: com.alibaba.druid.sql.ast.expr.SQLAggregateExpr@640d1fb2
15:00:28,858 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 visit node: class com.alibaba.druid.sql.ast.expr.SQLIntegerExpr
15:00:28,859 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 visit argument: 0
15:00:28,859 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit node: class com.alibaba.druid.sql.ast.expr.SQLIntegerExpr
15:00:28,859 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.absent(), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:00:28,860 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit condition: ConditionContext(conditions={})
15:00:28,860 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit SQL: SELECT COUNT(0
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit node: class com.alibaba.druid.sql.ast.expr.SQLAggregateExpr
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.absent(), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit condition: ConditionContext(conditions={})
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit SQL: SELECT COUNT(0)
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit node: class com.alibaba.druid.sql.ast.statement.SQLSelectItem
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.absent(), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit condition: ConditionContext(conditions={})
15:00:28,879 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit SQL: SELECT COUNT(0)
15:00:28,882 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit node: class com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock
15:00:28,882 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.absent(), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:00:28,882 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit condition: ConditionContext(conditions={})
15:00:28,885 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit SQL: SELECT COUNT(0) FROM [Token(t_order)]
15:00:28,885 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit node: class com.alibaba.druid.sql.ast.statement.SQLSelect
15:00:28,885 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.absent(), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:00:28,885 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit condition: ConditionContext(conditions={})
15:00:28,885 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit SQL: SELECT COUNT(0) FROM [Token(t_order)]
15:00:28,886 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit node: class com.alibaba.druid.sql.ast.statement.SQLSelectStatement
15:00:28,886 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.absent(), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:00:28,886 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit condition: ConditionContext(conditions={})
15:00:28,886 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit SQL: SELECT COUNT(0) FROM [Token(t_order)]
15:00:28,886 <com.dangdang.ddframe.rdb.sharding.parser.SQLParseEngine> DEBUG [main]: Parsed SQL result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[ConditionContext(conditions={})], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.absent(), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:00:28,886 <com.dangdang.ddframe.rdb.sharding.parser.SQLParseEngine> DEBUG [main]: Parsed SQL: SELECT COUNT(0) FROM [Token(t_order)]
15:00:28,904 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: Before database sharding t_order routes db names: [ds_0, ds_1, ds_2] sharding columns: [user_id] sharding values: []
15:00:28,904 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: After database sharding t_order result: [ds_2, ds_1, ds_0]
15:00:28,904 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: Before table sharding t_order routes db names: [DataNode(dataSourceName=ds_0, tableName=t_order_0), DataNode(dataSourceName=ds_1, tableName=t_order_0), DataNode(dataSourceName=ds_2, tableName=t_order_0), DataNode(dataSourceName=ds_0, tableName=t_order_1), DataNode(dataSourceName=ds_1, tableName=t_order_1), DataNode(dataSourceName=ds_2, tableName=t_order_1)] sharding columns: [order_id] sharding values: []
15:00:28,904 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: After table sharding t_order result: [t_order_0, t_order_1]
15:00:28,907 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_0] sql: [SELECT COUNT(0) FROM t_order_0]
15:00:28,907 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_0] sql: [SELECT COUNT(0) FROM t_order_1]
15:00:28,907 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_1] sql: [SELECT COUNT(0) FROM t_order_0]
15:00:28,907 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_1] sql: [SELECT COUNT(0) FROM t_order_1]
15:00:28,907 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_2] sql: [SELECT COUNT(0) FROM t_order_0]
15:00:28,907 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_2] sql: [SELECT COUNT(0) FROM t_order_1]
15:00:29,084 <com.dangdang.ddframe.rdb.sharding.executor.ExecutorEngine> TRACE [main]: Concurrent execute result success [true, true, true, true, true, true]
15:00:29,088 <com.dangdang.ddframe.rdb.sharding.merger.ResultSetFactory> TRACE [main]: Get 'Aggregate' result set
Feb 22, 2016 3:00:29 PM org.springframework.context.support.ClassPathXmlApplicationContext doClose
INFO: Closing org.springframework.context.support.ClassPathXmlApplicationContext@3d82c5f3: startup date [Mon Feb 22 15:00:24 CST 2016]; root of context hierarchy
count => 2 ***这是我输出的结果

但是，如果改成

    <select id="queryCount" resultType="int">
        select count(*) order_count from t_order
    </select>

写成这样，即：加一个字段别名后，返回结果是正确的，会把各分库、分表子查询的count值累加返回，输出日志如下：

15:03:49,055 <com.dangdang.ddframe.rdb.sharding.parser.SQLParserFactory> DEBUG [main]: Logic SQL: select count(0) order_count from t_order
15:03:49,105 <com.dangdang.ddframe.rdb.sharding.parser.SQLParserFactory> TRACE [main]: Get com.alibaba.druid.sql.ast.statement.SQLSelectStatement SQL Statement
15:03:49,505 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 visit node: class com.alibaba.druid.sql.ast.statement.SQLSelectStatement
15:03:49,540 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 visit argument: SELECT COUNT(0) AS order_count
FROM t_order
15:03:49,540 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 visit node: class com.alibaba.druid.sql.ast.statement.SQLSelect
15:03:49,540 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 visit argument: com.alibaba.druid.sql.ast.statement.SQLSelect@1d60737e
15:03:49,540 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 visit node: class com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock
15:03:49,540 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 visit argument: com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock@c7242101
15:03:49,572 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 visit node: class com.alibaba.druid.sql.ast.statement.SQLSelectItem
15:03:49,572 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 visit argument: com.alibaba.druid.sql.ast.expr.SQLAggregateExpr@640d1fb2 AS order_count
15:03:49,572 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 visit node: class com.alibaba.druid.sql.ast.expr.SQLAggregateExpr
15:03:49,572 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 visit argument: com.alibaba.druid.sql.ast.expr.SQLAggregateExpr@640d1fb2
15:03:49,574 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 visit node: class com.alibaba.druid.sql.ast.expr.SQLIntegerExpr
15:03:49,574 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 visit argument: 0
15:03:49,574 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit node: class com.alibaba.druid.sql.ast.expr.SQLIntegerExpr
15:03:49,574 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.of(order_count), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:03:49,575 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit condition: ConditionContext(conditions={})
15:03:49,575 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5   6 endVisit SQL: SELECT COUNT(0
15:03:49,604 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit node: class com.alibaba.druid.sql.ast.expr.SQLAggregateExpr
15:03:49,604 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.of(order_count), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:03:49,604 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit condition: ConditionContext(conditions={})
15:03:49,604 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4   5 endVisit SQL: SELECT COUNT(0)
15:03:49,605 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit node: class com.alibaba.druid.sql.ast.statement.SQLSelectItem
15:03:49,605 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.of(order_count), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:03:49,605 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit condition: ConditionContext(conditions={})
15:03:49,605 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3   4 endVisit SQL: SELECT COUNT(0) AS order_count
15:03:49,606 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit node: class com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock
15:03:49,606 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.of(order_count), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:03:49,606 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit condition: ConditionContext(conditions={})
15:03:49,609 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2   3 endVisit SQL: SELECT COUNT(0) AS order_count FROM [Token(t_order)]
15:03:49,609 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit node: class com.alibaba.druid.sql.ast.statement.SQLSelect
15:03:49,609 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.of(order_count), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:03:49,609 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit condition: ConditionContext(conditions={})
15:03:49,610 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1   2 endVisit SQL: SELECT COUNT(0) AS order_count FROM [Token(t_order)]
15:03:49,610 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit node: class com.alibaba.druid.sql.ast.statement.SQLSelectStatement
15:03:49,610 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.of(order_count), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:03:49,610 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit condition: ConditionContext(conditions={})
15:03:49,610 <com.dangdang.ddframe.rdb.sharding.parser.visitor.VisitorLogProxy> TRACE [main]:   1 endVisit SQL: SELECT COUNT(0) AS order_count FROM [Token(t_order)]
15:03:49,611 <com.dangdang.ddframe.rdb.sharding.parser.SQLParseEngine> DEBUG [main]: Parsed SQL result: SQLParsedResult(routeContext=RouteContext(tables=[Table(name=t_order, alias=Optional.absent())], sqlBuilder=null), conditionContexts=[ConditionContext(conditions={})], mergeContext=MergeContext(orderByColumns=[], groupByColumns=[], aggregationColumns=[AggregationColumn(expression=COUNT(0), aggregationType=COUNT, alias=Optional.of(order_count), option=Optional.absent(), derivedColumns=[], index=1)], limit=null))
15:03:49,611 <com.dangdang.ddframe.rdb.sharding.parser.SQLParseEngine> DEBUG [main]: Parsed SQL: SELECT COUNT(0) AS order_count FROM [Token(t_order)]
15:03:49,637 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: Before database sharding t_order routes db names: [ds_0, ds_1, ds_2] sharding columns: [user_id] sharding values: []
15:03:49,638 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: After database sharding t_order result: [ds_2, ds_1, ds_0]
15:03:49,638 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: Before table sharding t_order routes db names: [DataNode(dataSourceName=ds_0, tableName=t_order_0), DataNode(dataSourceName=ds_1, tableName=t_order_0), DataNode(dataSourceName=ds_2, tableName=t_order_0), DataNode(dataSourceName=ds_0, tableName=t_order_1), DataNode(dataSourceName=ds_1, tableName=t_order_1), DataNode(dataSourceName=ds_2, tableName=t_order_1)] sharding columns: [order_id] sharding values: []
15:03:49,638 <com.dangdang.ddframe.rdb.sharding.router.single.SingleTableRouter> TRACE [main]: After table sharding t_order result: [t_order_0, t_order_1]
15:03:49,641 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_0] sql: [SELECT COUNT(0) AS order_count FROM t_order_0]
15:03:49,641 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_0] sql: [SELECT COUNT(0) AS order_count FROM t_order_1]
15:03:49,641 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_1] sql: [SELECT COUNT(0) AS order_count FROM t_order_0]
15:03:49,641 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_1] sql: [SELECT COUNT(0) AS order_count FROM t_order_1]
15:03:49,642 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_2] sql: [SELECT COUNT(0) AS order_count FROM t_order_0]
15:03:49,642 <com.dangdang.ddframe.rdb.sharding.router.SQLExecutionUnit> DEBUG [main]: route sql to db: [ds_2] sql: [SELECT COUNT(0) AS order_count FROM t_order_1]
15:03:49,774 <com.dangdang.ddframe.rdb.sharding.executor.ExecutorEngine> TRACE [main]: Concurrent execute result success [true, true, true, true, true, true]
15:03:49,779 <com.dangdang.ddframe.rdb.sharding.merger.ResultSetFactory> TRACE [main]: Get 'Aggregate' result set
15:03:49,826 <com.dangdang.ddframe.rdb.sharding.merger.aggregation.AccumulationAggregationUnit> TRACE [main]: Accumulation result: 2
15:03:49,826 <com.dangdang.ddframe.rdb.sharding.merger.aggregation.AccumulationAggregationUnit> TRACE [main]: Accumulation result: 4
15:03:49,827 <com.dangdang.ddframe.rdb.sharding.merger.aggregation.AccumulationAggregationUnit> TRACE [main]: Accumulation result: 6
15:03:49,827 <com.dangdang.ddframe.rdb.sharding.merger.aggregation.AccumulationAggregationUnit> TRACE [main]: Accumulation result: 8
15:03:49,827 <com.dangdang.ddframe.rdb.sharding.merger.aggregation.AccumulationAggregationUnit> TRACE [main]: Accumulation result: 10
15:03:49,827 <com.dangdang.ddframe.rdb.sharding.merger.aggregation.AccumulationAggregationUnit> TRACE [main]: Accumulation result: 12
Feb 22, 2016 3:03:49 PM org.springframework.context.support.ClassPathXmlApplicationContext doClose
INFO: Closing org.springframework.context.support.ClassPathXmlApplicationContext@3d82c5f3: startup date [Mon Feb 22 15:03:45 CST 2016]; root of context hierarchy
count => 12 *** 这次就对了

各位大大，有空看下，谢谢！
@hanahmily hanahmily mentioned this issue Mar 14, 2016
Closed
terrymanu pushed a commit that referenced this issue May 4, 2018
@qiankunshe
Merge pull request #11 from shardingjdbc/issue_601
3f47f78 
Issue 601
terrymanu pushed a commit that referenced this issue Jun 23, 2018
@beckhampu
Merge pull request #11 from sharding-sphere/dev
90ef7e7 
update from origin
@sunOnly sunOnly mentioned this issue Oct 13, 2020
Closed
@GXY1122
Copy link

GXY1122 commented Feb 8, 2023

请问怎么解决的，感谢~

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
type: bug
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
3 participants
@yjmyzz @terrymanu @GXY1122