Select

This class represents a simple SELECT statement. For each select statement, visibleColumnCount <= distinctColumnCount <= expressionCount. The expression list count could include ORDER BY and GROUP BY expressions that are not in the select list. The call sequence is init(), mapColumns() if it's a subquery, prepare().

Methods
void	addCondition(Expression cond) Add a condition to the list of conditions.
void	addCondition(Expression cond) Add a condition to the list of conditions. Parameters: cond - the condition to add
void	addGlobalCondition(Parameter param, int columnId, int comparisonType)
void	addGlobalCondition(Parameter param, int columnId, int comparisonType)
void	addTableFilter(TableFilter filter, boolean isTop) Add a table to the query.
void	addTableFilter(TableFilter filter, boolean isTop) Add a table to the query. Parameters: filter - the table to add isTop - if the table can be the first table in the query plan
boolean	allowGlobalConditions()
boolean	allowGlobalConditions()
Value[]	createGroupSortedRow(Value[] keyValues, int columnCount) Create a row with the current values, for queries with group-sort.
Value[]	createGroupSortedRow(Value[] keyValues, int columnCount) Create a row with the current values, for queries with group-sort. Parameters: keyValues - the key values columnCount - the number of columns Returns: the row
void	fireBeforeSelectTriggers()
void	fireBeforeSelectTriggers()
int	getColumnCount()
int	getColumnCount()
Expression	getCondition()
Expression	getCondition()
double	getCost()
double	getCost()
HashMap	getCurrentGroup()
HashMap	getCurrentGroup()
int	getCurrentGroupRowId()
int	getCurrentGroupRowId()
ArrayList	getExpressions()
ArrayList	getExpressions()
ArrayList	getGroupBy()
ArrayList	getGroupBy()
Expression	getHaving()
Expression	getHaving()
JoinBatch	getJoinBatch()
JoinBatch	getJoinBatch()
String	getPlanSQL()
String	getPlanSQL()
SortOrder	getSortOrder()
SortOrder	getSortOrder()
HashSet	getTables()
HashSet	getTables()
ArrayList	getTopFilters()
ArrayList	getTopFilters()
TableFilter	getTopTableFilter()
TableFilter	getTopTableFilter()
int	getType()
int	getType()
boolean	hasOrder()
boolean	hasOrder()
void	init()
void	init()
boolean	isCacheable()
boolean	isCacheable()
boolean	isConditionMet()
boolean	isConditionMet()
boolean	isEverything(ExpressionVisitor visitor)
boolean	isEverything(ExpressionVisitor visitor)
boolean	isQuickAggregateQuery() Check if this is an aggregate query with direct lookup, for example a query of the type SELECT COUNT(*) FROM TEST or SELECT MAX(ID) FROM TEST.
boolean	isQuickAggregateQuery() Check if this is an aggregate query with direct lookup, for example a query of the type SELECT COUNT(*) FROM TEST or SELECT MAX(ID) FROM TEST. Returns: true if a direct lookup is possible
boolean	isReadOnly()
boolean	isReadOnly()
boolean	isUnion()
boolean	isUnion()
void	mapColumns(ColumnResolver resolver, int level)
void	mapColumns(ColumnResolver resolver, int level)
void	prepare()
void	prepare()
void	prepareJoinBatch()
void	prepareJoinBatch()
ResultInterface	queryMeta()
ResultInterface	queryMeta()
ResultInterface	queryWithoutCache(int maxRows, ResultTarget target)
ResultInterface	queryWithoutCache(int maxRows, ResultTarget target)
void	resetJoinBatchAfterQuery() Reset the batch-join after the query result is closed.
void	resetJoinBatchAfterQuery() Reset the batch-join after the query result is closed.
void	setEvaluatable(TableFilter tableFilter, boolean b)
void	setEvaluatable(TableFilter tableFilter, boolean b)
void	setExpressions(ArrayList expressions)
void	setExpressions(ArrayList expressions)
void	setForUpdate(boolean b)
void	setForUpdate(boolean b)
void	setGroupBy(ArrayList group)
void	setGroupBy(ArrayList group)
void	setGroupQuery() Called if this query contains aggregate functions.
void	setGroupQuery() Called if this query contains aggregate functions.
void	setHaving(Expression having)
void	setHaving(Expression having)
void	setOrder(ArrayList order)
void	setOrder(ArrayList order)
void	updateAggregate(Session s)
void	updateAggregate(Session s)

Fields
static HashMap	currentGroup
static int	currentGroupRowId
static ArrayList	expressions
static boolean[]	groupByExpression
static int[]	groupIndex
static TableFilter	topTableFilter
static int	visibleColumnCount

currentGroup

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currentGroupRowId

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expressions

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groupByExpression

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groupIndex

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topTableFilter

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visibleColumnCount

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