use of io.trino.sql.tree.FunctionCall.NullTreatment in project trino by trinodb.
the class QueryPlanner method planWindow.
private PlanBuilder planWindow(PlanBuilder subPlan, FunctionCall windowFunction, ResolvedWindow window, PlanAndMappings coercions, Optional<Symbol> frameStartSymbol, Optional<Symbol> sortKeyCoercedForFrameStartComparison, Optional<Symbol> frameEndSymbol, Optional<Symbol> sortKeyCoercedForFrameEndComparison) {
WindowFrame.Type frameType = WindowFrame.Type.RANGE;
FrameBound.Type frameStartType = FrameBound.Type.UNBOUNDED_PRECEDING;
FrameBound.Type frameEndType = FrameBound.Type.CURRENT_ROW;
Optional<Expression> frameStartExpression = Optional.empty();
Optional<Expression> frameEndExpression = Optional.empty();
if (window.getFrame().isPresent()) {
WindowFrame frame = window.getFrame().get();
frameType = frame.getType();
frameStartType = frame.getStart().getType();
frameStartExpression = frame.getStart().getValue();
if (frame.getEnd().isPresent()) {
frameEndType = frame.getEnd().get().getType();
frameEndExpression = frame.getEnd().get().getValue();
}
}
WindowNode.Specification specification = planWindowSpecification(window.getPartitionBy(), window.getOrderBy(), coercions::get);
// Rewrite frame bounds in terms of pre-projected inputs
WindowNode.Frame frame = new WindowNode.Frame(frameType, frameStartType, frameStartSymbol, sortKeyCoercedForFrameStartComparison, frameEndType, frameEndSymbol, sortKeyCoercedForFrameEndComparison, frameStartExpression, frameEndExpression);
Symbol newSymbol = symbolAllocator.newSymbol(windowFunction, analysis.getType(windowFunction));
NullTreatment nullTreatment = windowFunction.getNullTreatment().orElse(NullTreatment.RESPECT);
WindowNode.Function function = new WindowNode.Function(analysis.getResolvedFunction(windowFunction), windowFunction.getArguments().stream().map(argument -> {
if (argument instanceof LambdaExpression) {
return subPlan.rewrite(argument);
}
return coercions.get(argument).toSymbolReference();
}).collect(toImmutableList()), frame, nullTreatment == NullTreatment.IGNORE);
// create window node
return new PlanBuilder(subPlan.getTranslations().withAdditionalMappings(ImmutableMap.of(scopeAwareKey(windowFunction, analysis, subPlan.getScope()), newSymbol)), new WindowNode(idAllocator.getNextId(), subPlan.getRoot(), specification, ImmutableMap.of(newSymbol, function), Optional.empty(), ImmutableSet.of(), 0));
}
use of io.trino.sql.tree.FunctionCall.NullTreatment in project trino by trinodb.
the class QueryPlanner method planPatternRecognition.
private PlanBuilder planPatternRecognition(PlanBuilder subPlan, FunctionCall windowFunction, ResolvedWindow window, PlanAndMappings coercions, Optional<Symbol> frameEndSymbol) {
WindowNode.Specification specification = planWindowSpecification(window.getPartitionBy(), window.getOrderBy(), coercions::get);
// in window frame with pattern recognition, the frame extent is specified as `ROWS BETWEEN CURRENT ROW AND ... `
WindowFrame frame = window.getFrame().orElseThrow();
FrameBound frameEnd = frame.getEnd().orElseThrow();
WindowNode.Frame baseFrame = new WindowNode.Frame(WindowFrame.Type.ROWS, FrameBound.Type.CURRENT_ROW, Optional.empty(), Optional.empty(), frameEnd.getType(), frameEndSymbol, Optional.empty(), Optional.empty(), frameEnd.getValue());
Symbol newSymbol = symbolAllocator.newSymbol(windowFunction, analysis.getType(windowFunction));
NullTreatment nullTreatment = windowFunction.getNullTreatment().orElse(NullTreatment.RESPECT);
WindowNode.Function function = new WindowNode.Function(analysis.getResolvedFunction(windowFunction), windowFunction.getArguments().stream().map(argument -> {
if (argument instanceof LambdaExpression) {
return subPlan.rewrite(argument);
}
return coercions.get(argument).toSymbolReference();
}).collect(toImmutableList()), baseFrame, nullTreatment == NullTreatment.IGNORE);
PatternRecognitionComponents components = new RelationPlanner(analysis, symbolAllocator, idAllocator, lambdaDeclarationToSymbolMap, plannerContext, outerContext, session, recursiveSubqueries).planPatternRecognitionComponents(subPlan::rewrite, frame.getSubsets(), ImmutableList.of(), frame.getAfterMatchSkipTo(), frame.getPatternSearchMode(), frame.getPattern().orElseThrow(), frame.getVariableDefinitions());
// create pattern recognition node
return new PlanBuilder(subPlan.getTranslations().withAdditionalMappings(ImmutableMap.of(scopeAwareKey(windowFunction, analysis, subPlan.getScope()), newSymbol)), new PatternRecognitionNode(idAllocator.getNextId(), subPlan.getRoot(), specification, Optional.empty(), ImmutableSet.of(), 0, ImmutableMap.of(newSymbol, function), components.getMeasures(), Optional.of(baseFrame), RowsPerMatch.WINDOW, components.getSkipToLabel(), components.getSkipToPosition(), components.isInitial(), components.getPattern(), components.getSubsets(), components.getVariableDefinitions()));
}
use of io.trino.sql.tree.FunctionCall.NullTreatment in project trino by trinodb.
the class AstBuilder method visitFunctionCall.
@Override
public Node visitFunctionCall(SqlBaseParser.FunctionCallContext context) {
Optional<Expression> filter = visitIfPresent(context.filter(), Expression.class);
Optional<Window> window = visitIfPresent(context.over(), Window.class);
Optional<OrderBy> orderBy = Optional.empty();
if (context.ORDER() != null) {
orderBy = Optional.of(new OrderBy(visit(context.sortItem(), SortItem.class)));
}
QualifiedName name = getQualifiedName(context.qualifiedName());
boolean distinct = isDistinct(context.setQuantifier());
SqlBaseParser.NullTreatmentContext nullTreatment = context.nullTreatment();
SqlBaseParser.ProcessingModeContext processingMode = context.processingMode();
if (name.toString().equalsIgnoreCase("if")) {
check(context.expression().size() == 2 || context.expression().size() == 3, "Invalid number of arguments for 'if' function", context);
check(!window.isPresent(), "OVER clause not valid for 'if' function", context);
check(!distinct, "DISTINCT not valid for 'if' function", context);
check(nullTreatment == null, "Null treatment clause not valid for 'if' function", context);
check(processingMode == null, "Running or final semantics not valid for 'if' function", context);
check(!filter.isPresent(), "FILTER not valid for 'if' function", context);
Expression elseExpression = null;
if (context.expression().size() == 3) {
elseExpression = (Expression) visit(context.expression(2));
}
return new IfExpression(getLocation(context), (Expression) visit(context.expression(0)), (Expression) visit(context.expression(1)), elseExpression);
}
if (name.toString().equalsIgnoreCase("nullif")) {
check(context.expression().size() == 2, "Invalid number of arguments for 'nullif' function", context);
check(!window.isPresent(), "OVER clause not valid for 'nullif' function", context);
check(!distinct, "DISTINCT not valid for 'nullif' function", context);
check(nullTreatment == null, "Null treatment clause not valid for 'nullif' function", context);
check(processingMode == null, "Running or final semantics not valid for 'nullif' function", context);
check(!filter.isPresent(), "FILTER not valid for 'nullif' function", context);
return new NullIfExpression(getLocation(context), (Expression) visit(context.expression(0)), (Expression) visit(context.expression(1)));
}
if (name.toString().equalsIgnoreCase("coalesce")) {
check(context.expression().size() >= 2, "The 'coalesce' function must have at least two arguments", context);
check(!window.isPresent(), "OVER clause not valid for 'coalesce' function", context);
check(!distinct, "DISTINCT not valid for 'coalesce' function", context);
check(nullTreatment == null, "Null treatment clause not valid for 'coalesce' function", context);
check(processingMode == null, "Running or final semantics not valid for 'coalesce' function", context);
check(!filter.isPresent(), "FILTER not valid for 'coalesce' function", context);
return new CoalesceExpression(getLocation(context), visit(context.expression(), Expression.class));
}
if (name.toString().equalsIgnoreCase("try")) {
check(context.expression().size() == 1, "The 'try' function must have exactly one argument", context);
check(!window.isPresent(), "OVER clause not valid for 'try' function", context);
check(!distinct, "DISTINCT not valid for 'try' function", context);
check(nullTreatment == null, "Null treatment clause not valid for 'try' function", context);
check(processingMode == null, "Running or final semantics not valid for 'try' function", context);
check(!filter.isPresent(), "FILTER not valid for 'try' function", context);
return new TryExpression(getLocation(context), (Expression) visit(getOnlyElement(context.expression())));
}
if (name.toString().equalsIgnoreCase("format")) {
check(context.expression().size() >= 2, "The 'format' function must have at least two arguments", context);
check(!window.isPresent(), "OVER clause not valid for 'format' function", context);
check(!distinct, "DISTINCT not valid for 'format' function", context);
check(nullTreatment == null, "Null treatment clause not valid for 'format' function", context);
check(processingMode == null, "Running or final semantics not valid for 'format' function", context);
check(!filter.isPresent(), "FILTER not valid for 'format' function", context);
return new Format(getLocation(context), visit(context.expression(), Expression.class));
}
if (name.toString().equalsIgnoreCase("$internal$bind")) {
check(context.expression().size() >= 1, "The '$internal$bind' function must have at least one arguments", context);
check(!window.isPresent(), "OVER clause not valid for '$internal$bind' function", context);
check(!distinct, "DISTINCT not valid for '$internal$bind' function", context);
check(nullTreatment == null, "Null treatment clause not valid for '$internal$bind' function", context);
check(processingMode == null, "Running or final semantics not valid for '$internal$bind' function", context);
check(!filter.isPresent(), "FILTER not valid for '$internal$bind' function", context);
int numValues = context.expression().size() - 1;
List<Expression> arguments = context.expression().stream().map(this::visit).map(Expression.class::cast).collect(toImmutableList());
return new BindExpression(getLocation(context), arguments.subList(0, numValues), arguments.get(numValues));
}
Optional<NullTreatment> nulls = Optional.empty();
if (nullTreatment != null) {
if (nullTreatment.IGNORE() != null) {
nulls = Optional.of(NullTreatment.IGNORE);
} else if (nullTreatment.RESPECT() != null) {
nulls = Optional.of(NullTreatment.RESPECT);
}
}
Optional<ProcessingMode> mode = Optional.empty();
if (processingMode != null) {
if (processingMode.RUNNING() != null) {
mode = Optional.of(new ProcessingMode(getLocation(processingMode), RUNNING));
} else if (processingMode.FINAL() != null) {
mode = Optional.of(new ProcessingMode(getLocation(processingMode), FINAL));
}
}
List<Expression> arguments = visit(context.expression(), Expression.class);
if (context.label != null) {
arguments = ImmutableList.of(new DereferenceExpression(getLocation(context.label), (Identifier) visit(context.label)));
}
return new FunctionCall(Optional.of(getLocation(context)), name, window, filter, orderBy, distinct, nulls, mode, arguments);
}
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