本文整理汇总了Java中com.taobao.tddl.optimizer.core.ast.query.JoinNode.select方法的典型用法代码示例。如果您正苦于以下问题:Java JoinNode.select方法的具体用法?Java JoinNode.select怎么用?Java JoinNode.select使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类com.taobao.tddl.optimizer.core.ast.query.JoinNode
的用法示例。
在下文中一共展示了JoinNode.select方法的6个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: KVIndexNode
import com.taobao.tddl.optimizer.core.ast.query.JoinNode; //导入方法依赖的package包/类
@Test
public void test_insertSelect查询_select为join查询_生成merge_设置where条件() {
KVIndexNode table1 = new KVIndexNode("TABLE1");
KVIndexNode table2 = new KVIndexNode("TABLE2");
table2.keyQuery("ID IN (2,3)");
KVIndexNode table3 = new KVIndexNode("TABLE3");
table3.keyQuery("ID IN (2,3)");
JoinNode join = table2.join(table3, "ID", "ID");
join.select("TABLE2.*");
InsertNode insert = new InsertNode(table1);
insert.setSelectNode(join);
insert.build();
ASTNode qtn = shard(insert);
Assert.assertTrue(qtn instanceof MergeNode);
Assert.assertTrue(((MergeNode) qtn).getChild() instanceof InsertNode);
Assert.assertEquals(2, ((MergeNode) qtn).getChildren().size());
}
示例2: TableNode
import com.taobao.tddl.optimizer.core.ast.query.JoinNode; //导入方法依赖的package包/类
@Test
public void test_where条件下推_多级join() {
TableNode table1 = new TableNode("TABLE1");
TableNode table2 = new TableNode("TABLE2");
TableNode table3 = new TableNode("TABLE3");
JoinNode join = table1.join(table2);
join.select("TABLE1.ID AS ID , TABLE1.NAME AS NAME");
join.query("TABLE1.ID>5 AND TABLE2.ID<10 AND TABLE1.NAME = TABLE2.NAME");
join.build();
JoinNode nextJoin = join.join(table3);
nextJoin.query("TABLE1.NAME = 6 AND TABLE1.ID = TABLE3.ID");
nextJoin.build();
FilterPusher.optimize(nextJoin);
Assert.assertEquals("(TABLE1.NAME = 6 AND TABLE1.ID > 5)", ((JoinNode) nextJoin.getLeftNode()).getLeftNode()
.getWhereFilter()
.toString());
Assert.assertEquals("(TABLE2.ID < 10 AND TABLE2.NAME = 6)", ((JoinNode) nextJoin.getLeftNode()).getRightNode()
.getWhereFilter()
.toString());
Assert.assertEquals("TABLE1.ID = TABLE3.ID", nextJoin.getJoinFilter().get(0).toString());
}
示例3: TableNode
import com.taobao.tddl.optimizer.core.ast.query.JoinNode; //导入方法依赖的package包/类
@Test
public void test_join条件下推_子表_case5_函数不下推() {
TableNode table1 = new TableNode("TABLE1");
TableNode table2 = new TableNode("TABLE2");
table1.alias("A");
table2.alias("B");
JoinNode join = table1.join(table2);
join.setJoinStrategy(JoinStrategy.INDEX_NEST_LOOP);
join.select("A.ID AS CID, (A.NAME + A.SCHOOL) AS NAME");
join.orderBy("CID ");
join.orderBy("NAME"); // 这里的name为select中的函数
join.build();
OrderByPusher.optimize(join);
Assert.assertEquals(0, table1.getOrderBys().size());
}
示例4: convertPlanToAst
import com.taobao.tddl.optimizer.core.ast.query.JoinNode; //导入方法依赖的package包/类
public static JoinNode convertPlanToAst(IJoin join) {
JoinNode node = new JoinNode();
node.setRightNode(convertPlanToAst(join.getRightNode()));
node.setLeftNode(convertPlanToAst(join.getLeftNode()));
node.setJoinStrategy(join.getJoinStrategy());
if (join.getLeftOuter() && join.getRightOuter()) {
node.setInnerJoin();
} else if (join.getLeftOuter()) {
node.setLeftOuterJoin();
} else if (join.getRightOuter()) {
node.setRightOuterJoin();
} else {
node.setOuterJoin();
}
int size = join.getLeftJoinOnColumns().size();
for (int i = 0; i < size; i++) {
node.addJoinKeys(join.getLeftJoinOnColumns().get(i), join.getRightJoinOnColumns().get(i));
}
node.setOrderBys(join.getOrderBys());
node.setLimitFrom(join.getLimitFrom());
node.setLimitTo(join.getLimitTo());
node.setConsistent(join.getConsistent());
node.setResultFilter(join.getValueFilter());
node.having(join.getHavingFilter());
node.setAlias(join.getAlias());
node.setGroupBys(join.getGroupBys());
node.setSubQuery(join.isSubQuery());
node.setOtherJoinOnFilter(join.getOtherJoinOnFilter());
node.select((join.getColumns()));
node.setAllWhereFilter(join.getWhereFilter());
node.setExistAggregate(join.isExistAggregate());
node.executeOn(join.getDataNode());
node.setSubqueryOnFilterId(join.getSubqueryOnFilterId());
node.setSubqueryFilter(join.getSubqueryFilter());
node.build();
node = node.deepCopy();
return node;
}
示例5: TableNode
import com.taobao.tddl.optimizer.core.ast.query.JoinNode; //导入方法依赖的package包/类
@Test
public void test_两表join_orderby_groupby_limit条件() {
TableNode table = new TableNode("TABLE1");
JoinNode join = table.join("TABLE2", "ID", "ID");
join.select(OptimizerUtils.createColumnFromString("TABLE1.ID AS JID"),
OptimizerUtils.createColumnFromString("CONCAT(TABLE1.NAME,TABLE1.SCHOOL) AS JNAME"));
join.orderBy("JID");
join.groupBy("JNAME");
join.having("COUNT(JID) > 0");
IQueryTree qc = (IQueryTree) optimizer.optimizeAndAssignment(join, null, extraCmd);
Assert.assertTrue(qc instanceof IMerge);
Assert.assertEquals(QUERY_CONCURRENCY.CONCURRENT, ((IMerge) qc).getQueryConcurrency());// 串行
}
示例6: TableNode
import com.taobao.tddl.optimizer.core.ast.query.JoinNode; //导入方法依赖的package包/类
@Test
public void test_Join左是子查询_右是TableNode_转化为最左树() {
TableNode table1 = new TableNode("TABLE1");
QueryNode query = new QueryNode(table1);
query.build();
TableNode table2 = new TableNode("TABLE2");
JoinNode join = table1.join(table2, "NAME", "NAME");
join.setJoinStrategy(JoinStrategy.INDEX_NEST_LOOP);
join.query("TABLE1.NAME = 1 AND TABLE1.ID > 3 AND TABLE1.SCHOOL = 1");// 原本条件应该是加在join下的,这里省区推导的过程
join.select("(TABLE2.ID + TABLE2.NAME) AS NEWNAME"); // 设置为函数
join.orderBy("TABLE1.SCHOOL", false);// 增加一个隐藏列
join.groupBy("NEWNAME");
join.build();
QueryTreeNode qn = FilterPusher.optimize(join);// 先把条件推导子节点上,构建子节点join
build(table1);
build(table2);
qn = qn.convertToJoinIfNeed();
Assert.assertTrue(qn instanceof JoinNode);
Assert.assertEquals("TABLE2$_NAME.ID = TABLE2.ID", ((JoinNode) qn).getJoinFilter().get(0).toString());
Assert.assertTrue(((JoinNode) qn).getLeftNode() instanceof JoinNode);
Assert.assertEquals("TABLE1.NAME = TABLE2$_NAME.NAME",
((JoinNode) ((JoinNode) qn).getLeftNode()).getJoinFilter().get(0).toString());
Assert.assertTrue(((JoinNode) ((JoinNode) qn).getLeftNode()).getLeftNode() instanceof JoinNode);
JoinNode jn = (JoinNode) ((JoinNode) ((JoinNode) qn).getLeftNode()).getLeftNode();
Assert.assertEquals("TABLE1._NAME.NAME = 1", jn.getLeftNode().getKeyFilter().toString());
Assert.assertEquals("TABLE1._NAME.ID > 3", jn.getLeftNode().getResultFilter().toString());
Assert.assertEquals("TABLE1.SCHOOL = 1", jn.getRightNode().getResultFilter().toString());
Assert.assertEquals("TABLE1._NAME.ID = TABLE1.ID", jn.getJoinFilter().get(0).toString());
}