Examples with DoubleLiteral com.facebook.presto.sql.tree.DoubleLiteral used on opensource projects

Example 6 with DoubleLiteral

use of com.facebook.presto.sql.tree.DoubleLiteral in project presto by prestodb.

the class LiteralInterpreter method toExpression.

public static Expression toExpression(Object object, Type type) {
    requireNonNull(type, "type is null");
    if (object instanceof Expression) {
        return (Expression) object;
    }
    if (object == null) {
        if (type.equals(UNKNOWN)) {
            return new NullLiteral();
        }
        return new Cast(new NullLiteral(), type.getTypeSignature().toString(), false, true);
    }
    if (type.equals(INTEGER)) {
        return new LongLiteral(object.toString());
    }
    if (type.equals(BIGINT)) {
        LongLiteral expression = new LongLiteral(object.toString());
        if (expression.getValue() >= Integer.MIN_VALUE && expression.getValue() <= Integer.MAX_VALUE) {
            return new GenericLiteral("BIGINT", object.toString());
        }
        return new LongLiteral(object.toString());
    }
    checkArgument(Primitives.wrap(type.getJavaType()).isInstance(object), "object.getClass (%s) and type.getJavaType (%s) do not agree", object.getClass(), type.getJavaType());
    if (type.equals(DOUBLE)) {
        Double value = (Double) object;
        // When changing this, don't forget about similar code for REAL below
        if (value.isNaN()) {
            return new FunctionCall(QualifiedName.of("nan"), ImmutableList.of());
        } else if (value.equals(Double.NEGATIVE_INFINITY)) {
            return ArithmeticUnaryExpression.negative(new FunctionCall(QualifiedName.of("infinity"), ImmutableList.of()));
        } else if (value.equals(Double.POSITIVE_INFINITY)) {
            return new FunctionCall(QualifiedName.of("infinity"), ImmutableList.of());
        } else {
            return new DoubleLiteral(object.toString());
        }
    }
    if (type.equals(REAL)) {
        Float value = intBitsToFloat(((Long) object).intValue());
        // WARNING for ORC predicate code as above (for double)
        if (value.isNaN()) {
            return new Cast(new FunctionCall(QualifiedName.of("nan"), ImmutableList.of()), StandardTypes.REAL);
        } else if (value.equals(Float.NEGATIVE_INFINITY)) {
            return ArithmeticUnaryExpression.negative(new Cast(new FunctionCall(QualifiedName.of("infinity"), ImmutableList.of()), StandardTypes.REAL));
        } else if (value.equals(Float.POSITIVE_INFINITY)) {
            return new Cast(new FunctionCall(QualifiedName.of("infinity"), ImmutableList.of()), StandardTypes.REAL);
        } else {
            return new GenericLiteral("REAL", value.toString());
        }
    }
    if (type instanceof VarcharType) {
        if (object instanceof String) {
            object = Slices.utf8Slice((String) object);
        }
        if (object instanceof Slice) {
            Slice value = (Slice) object;
            int length = SliceUtf8.countCodePoints(value);
            if (length == ((VarcharType) type).getLength()) {
                return new StringLiteral(value.toStringUtf8());
            }
            return new Cast(new StringLiteral(value.toStringUtf8()), type.getDisplayName(), false, true);
        }
        throw new IllegalArgumentException("object must be instance of Slice or String when type is VARCHAR");
    }
    if (type.equals(BOOLEAN)) {
        return new BooleanLiteral(object.toString());
    }
    if (object instanceof Block) {
        SliceOutput output = new DynamicSliceOutput(((Block) object).getSizeInBytes());
        BlockSerdeUtil.writeBlock(output, (Block) object);
        object = output.slice();
    // This if condition will evaluate to true: object instanceof Slice && !type.equals(VARCHAR)
    }
    if (object instanceof Slice) {
        // HACK: we need to serialize VARBINARY in a format that can be embedded in an expression to be
        // able to encode it in the plan that gets sent to workers.
        // We do this by transforming the in-memory varbinary into a call to from_base64(<base64-encoded value>)
        FunctionCall fromBase64 = new FunctionCall(QualifiedName.of("from_base64"), ImmutableList.of(new StringLiteral(VarbinaryFunctions.toBase64((Slice) object).toStringUtf8())));
        Signature signature = FunctionRegistry.getMagicLiteralFunctionSignature(type);
        return new FunctionCall(QualifiedName.of(signature.getName()), ImmutableList.of(fromBase64));
    }
    Signature signature = FunctionRegistry.getMagicLiteralFunctionSignature(type);
    Expression rawLiteral = toExpression(object, FunctionRegistry.typeForMagicLiteral(type));
    return new FunctionCall(QualifiedName.of(signature.getName()), ImmutableList.of(rawLiteral));
}

Example 7 with DoubleLiteral

use of com.facebook.presto.sql.tree.DoubleLiteral in project presto by prestodb.

the class TestComparisonStatsCalculator method symbolToLiteralLessThanStats.

@Test
public void symbolToLiteralLessThanStats() {
    // Simple case
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("y"), new DoubleLiteral("2.5"))).outputRowsCount(// all rows minus nulls times range coverage (50%)
    250.0).variableStats(new VariableReferenceExpression(Optional.empty(), "y", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(10.0).lowValue(0.0).highValue(2.5).nullsFraction(0.0);
    });
    // Literal on the edge of symbol range (whole range included)
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("x"), new DoubleLiteral("10.0"))).outputRowsCount(// all rows minus nulls times range coverage (100%)
    750.0).variableStats(new VariableReferenceExpression(Optional.empty(), "x", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(40.0).lowValue(-10.0).highValue(10.0).nullsFraction(0.0);
    });
    // Literal on the edge of symbol range (whole range excluded)
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("x"), new DoubleLiteral("-10.0"))).outputRowsCount(// all rows minus nulls divided by NDV (one value from edge is included as approximation)
    18.75).variableStats(new VariableReferenceExpression(Optional.empty(), "x", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(1.0).lowValue(-10.0).highValue(-10.0).nullsFraction(0.0);
    });
    // Literal range out of symbol range
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("y"), new DoubleLiteral("-10.0"))).outputRowsCount(// all rows minus nulls times range coverage (0%)
    0.0).variableStats(new VariableReferenceExpression(Optional.empty(), "y", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(0.0).distinctValuesCount(0.0).emptyRange().nullsFraction(1.0);
    });
    // Literal in left open range
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("leftOpen"), new DoubleLiteral("0.0"))).outputRowsCount(// all rows minus nulls times range coverage (50% - heuristic)
    450.0).variableStats(new VariableReferenceExpression(Optional.empty(), "leftOpen", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(// (50% heuristic)
        25.0).lowValueUnknown().highValue(0.0).nullsFraction(0.0);
    });
    // Literal in right open range
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("rightOpen"), new DoubleLiteral("0.0"))).outputRowsCount(// all rows minus nulls times range coverage (25% - heuristic)
    225.0).variableStats(new VariableReferenceExpression(Optional.empty(), "rightOpen", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(// (25% heuristic)
        12.5).lowValue(-15.0).highValue(0.0).nullsFraction(0.0);
    });
    // Literal in unknown range
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("unknownRange"), new DoubleLiteral("0.0"))).outputRowsCount(// all rows minus nulls times range coverage (50% - heuristic)
    450.0).variableStats(new VariableReferenceExpression(Optional.empty(), "unknownRange", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(// (50% heuristic)
        25.0).lowValueUnknown().highValue(0.0).nullsFraction(0.0);
    });
    // Literal in empty range
    assertCalculate(new ComparisonExpression(LESS_THAN, new SymbolReference("emptyRange"), new DoubleLiteral("0.0"))).outputRowsCount(0.0).variableStats(new VariableReferenceExpression(Optional.empty(), "emptyRange", DOUBLE), equalTo(emptyRangeStats));
}

Example 8 with DoubleLiteral

use of com.facebook.presto.sql.tree.DoubleLiteral in project presto by prestodb.

the class TestComparisonStatsCalculator method symbolToLiteralNotEqualStats.

@Test
public void symbolToLiteralNotEqualStats() {
    // Simple case
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("y"), new DoubleLiteral("2.5"))).outputRowsCount(// all rows minus nulls multiplied by ((distinct values - 1) / distinct values)
    475.0).variableStats(new VariableReferenceExpression(Optional.empty(), "y", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(19.0).lowValue(0.0).highValue(5.0).nullsFraction(0.0);
    });
    // Literal on the edge of symbol range
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("x"), new DoubleLiteral("10.0"))).outputRowsCount(// all rows minus nulls multiplied by ((distinct values - 1) / distinct values)
    731.25).variableStats(new VariableReferenceExpression(Optional.empty(), "x", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(39.0).lowValue(-10.0).highValue(10.0).nullsFraction(0.0);
    });
    // Literal out of symbol range
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("y"), new DoubleLiteral("10.0"))).outputRowsCount(// all rows minus nulls
    500.0).variableStats(new VariableReferenceExpression(Optional.empty(), "y", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(19.0).lowValue(0.0).highValue(5.0).nullsFraction(0.0);
    });
    // Literal in left open range
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("leftOpen"), new DoubleLiteral("2.5"))).outputRowsCount(// all rows minus nulls multiplied by ((distinct values - 1) / distinct values)
    882.0).variableStats(new VariableReferenceExpression(Optional.empty(), "leftOpen", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(49.0).lowValueUnknown().highValue(15.0).nullsFraction(0.0);
    });
    // Literal in right open range
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("rightOpen"), new DoubleLiteral("-2.5"))).outputRowsCount(// all rows minus nulls divided by distinct values count
    882.0).variableStats(new VariableReferenceExpression(Optional.empty(), "rightOpen", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(49.0).lowValue(-15.0).highValueUnknown().nullsFraction(0.0);
    });
    // Literal in unknown range
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("unknownRange"), new DoubleLiteral("0.0"))).outputRowsCount(// all rows minus nulls divided by distinct values count
    882.0).variableStats(new VariableReferenceExpression(Optional.empty(), "unknownRange", DOUBLE), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(49.0).lowValueUnknown().highValueUnknown().nullsFraction(0.0);
    });
    // Literal in empty range
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("emptyRange"), new DoubleLiteral("0.0"))).outputRowsCount(0.0).variableStats(new VariableReferenceExpression(Optional.empty(), "emptyRange", DOUBLE), equalTo(emptyRangeStats));
    // Column with values not representable as double (unknown range)
    assertCalculate(new ComparisonExpression(NOT_EQUAL, new SymbolReference("varchar"), new StringLiteral("blah"))).outputRowsCount(// all rows minus nulls divided by distinct values count
    882.0).variableStats(new VariableReferenceExpression(Optional.empty(), "varchar", VarcharType.createVarcharType(10)), symbolAssert -> {
        symbolAssert.averageRowSize(4.0).distinctValuesCount(49.0).lowValueUnknown().highValueUnknown().nullsFraction(0.0);
    });
}

Example 9 with DoubleLiteral

use of com.facebook.presto.sql.tree.DoubleLiteral in project presto by prestodb.

the class TestScalarStatsCalculator method testLiteral.

@Test
public void testLiteral() {
    assertCalculate(new GenericLiteral("TINYINT", "7")).distinctValuesCount(1.0).lowValue(7).highValue(7).nullsFraction(0.0);
    assertCalculate(new GenericLiteral("SMALLINT", "8")).distinctValuesCount(1.0).lowValue(8).highValue(8).nullsFraction(0.0);
    assertCalculate(new GenericLiteral("INTEGER", "9")).distinctValuesCount(1.0).lowValue(9).highValue(9).nullsFraction(0.0);
    assertCalculate(new GenericLiteral("BIGINT", Long.toString(Long.MAX_VALUE))).distinctValuesCount(1.0).lowValue(Long.MAX_VALUE).highValue(Long.MAX_VALUE).nullsFraction(0.0);
    assertCalculate(new DoubleLiteral("7.5")).distinctValuesCount(1.0).lowValue(7.5).highValue(7.5).nullsFraction(0.0);
    assertCalculate(new DecimalLiteral("75.5")).distinctValuesCount(1.0).lowValue(75.5).highValue(75.5).nullsFraction(0.0);
    assertCalculate(new StringLiteral("blah")).distinctValuesCount(1.0).lowValueUnknown().highValueUnknown().nullsFraction(0.0);
    assertCalculate(new NullLiteral()).distinctValuesCount(0.0).lowValueUnknown().highValueUnknown().nullsFraction(1.0);
}

Example 10 with DoubleLiteral

use of com.facebook.presto.sql.tree.DoubleLiteral in project presto by prestodb.

the class TestSqlParser method testValues.

@Test
public void testValues() {
    Query valuesQuery = query(values(row(new StringLiteral("a"), new LongLiteral("1"), new DoubleLiteral("2.2")), row(new StringLiteral("b"), new LongLiteral("2"), new DoubleLiteral("3.3"))));
    assertStatement("VALUES ('a', 1, 2.2e0), ('b', 2, 3.3e0)", valuesQuery);
    assertStatement("SELECT * FROM (VALUES ('a', 1, 2.2e0), ('b', 2, 3.3e0))", simpleQuery(selectList(new AllColumns()), subquery(valuesQuery)));
}