gudusoft.gsqlparser.nodes.flink

Class TFlinkExplainSqlNode

Object

gudusoft.gsqlparser.nodes.TParseTreeNode

gudusoft.gsqlparser.nodes.flink.TFlinkExplainSqlNode

All Implemented Interfaces:

Visitable, Iterator<TSourceToken>

public class TFlinkExplainSqlNode
extends TParseTreeNode

AST node for Flink EXPLAIN statement.

Syntax:

 EXPLAIN [([ExplainDetail[, ExplainDetail]*]) | PLAN FOR] <statement>
 

Where ExplainDetail can be:

• ESTIMATED_COST - Shows estimated cost of each physical rel node
• CHANGELOG_MODE - Shows changelog mode of each physical rel node
• PLAN_ADVICE - Provides potential risk warnings and optimization advice
• JSON_EXECUTION_PLAN - Shows JSON-format execution plan

Examples:

 EXPLAIN SELECT * FROM Orders;
 EXPLAIN PLAN FOR SELECT * FROM Orders;
 EXPLAIN ESTIMATED_COST, CHANGELOG_MODE SELECT * FROM Orders;
 EXPLAIN (ESTIMATED_COST, CHANGELOG_MODE) SELECT * FROM Orders;
 

Since:

3.2.0.0

Field Summary

Fields inherited from class gudusoft.gsqlparser.nodes.TParseTreeNode

dbvendor, doubleLinkedTokenListToString, nodeActionAppend, nodeActionInsert, nodeActionRemove, nodeActionUnknown, nodeActionUpdate, nodeActionUpdateText, nodeChangeEndToken, nodeChangeStartToken

Constructor Summary

Constructors

Constructor and Description
TFlinkExplainSqlNode()

Method Summary

Modifier and Type	Method and Description
TParseTreeNode	getStatementNode()
void	init(Object arg1) Initialize node with just the statement (basic EXPLAIN).
boolean	isChangelogMode()
boolean	isEstimatedCost()
boolean	isJsonExecutionPlan()
boolean	isPlanAdvice()
boolean	isPlanFor()
void	setChangelogMode(boolean changelogMode)
void	setEstimatedCost(boolean estimatedCost)
void	setIsPlanFor(boolean isPlanFor)
void	setJsonExecutionPlan(boolean jsonExecutionPlan)
void	setPlanAdvice(boolean planAdvice)

Methods inherited from class gudusoft.gsqlparser.nodes.TParseTreeNode

accept, acceptChildren, addAllMyTokensToTokenList, addToTokenChain, appendNewNode, calculateTokenCount, doAppendNewNode, doParse, fastSetString, getAnchorNode, getColumnNo, getCommentAfterNode, getCommentBeforeNode, getCompactString, getDummyTag, getEndToken, getEvaluateDatatype, getEvalValue, getGsqlparser, getLineNo, getLocation, getMd5, getNodeStatus, getNodeType, getParentObjectName, getPlainText, getStartToken, getTokenCount, hasNext, init, init, init, init, init, init, init, init, init, insertAfterAToken, insertNewNodeBeforeMe, isChanged, isTokensInChain, next, refreshAllNodesTokenCount, remove, removeAllMyTokensFromTokenList, removeTokens, removeTokensBetweenNodes, removeTokensBetweenToken, replaceWithNewNode, resetIterator, setAnchorNode, setChanged, setDummyTag, setEndToken, setEndToken, setEndToken, setEndToken, setEndToken, setEndTokenDirectly, setEvaluateDatatype, setEvalValue, setGsqlparser, setIncludingComment, setLocation, setNewSubNode, setNodeStatus, setNodeType, setParent, setPlainText, setStartToken, setStartToken, setStartToken, setStartToken, setStartTokenDirectly, setString, setString2, subNodeInNode, toScript, toString, toString2

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface Iterator

forEachRemaining

Constructor Detail

TFlinkExplainSqlNode

public TFlinkExplainSqlNode()

Method Detail

getStatementNode

public TParseTreeNode getStatementNode()

isEstimatedCost

public boolean isEstimatedCost()

setEstimatedCost

public void setEstimatedCost(boolean estimatedCost)

isChangelogMode

public boolean isChangelogMode()

setChangelogMode

public void setChangelogMode(boolean changelogMode)

isPlanAdvice

public boolean isPlanAdvice()

setPlanAdvice

public void setPlanAdvice(boolean planAdvice)

isJsonExecutionPlan

public boolean isJsonExecutionPlan()

setJsonExecutionPlan

public void setJsonExecutionPlan(boolean jsonExecutionPlan)

isPlanFor

public boolean isPlanFor()

setIsPlanFor

public void setIsPlanFor(boolean isPlanFor)

init

public void init(Object arg1)

Initialize node with just the statement (basic EXPLAIN). Called as: nf.createNode(ENodeType.T_FlinkExplainSqlNode.getId(), stmt)

Overrides:

init in class TParseTreeNode

Parameters:

arg1 - first argument