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

Example 26 with StringLiteral

use of com.facebook.presto.sql.tree.StringLiteral 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 27 with StringLiteral

use of com.facebook.presto.sql.tree.StringLiteral 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 28 with StringLiteral

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

the class TestExpressionInterpreter method assertLike.

private static void assertLike(byte[] value, String pattern, boolean expected) {
    Expression predicate = new LikePredicate(rawStringLiteral(Slices.wrappedBuffer(value)), new StringLiteral(pattern), Optional.empty());
    assertEquals(evaluate(predicate, true), expected);
}

Example 29 with StringLiteral

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

the class TestSqlParser method testPosition.

@Test
public void testPosition() {
    assertExpression("position('a' in 'b')", new FunctionCall(QualifiedName.of("strpos"), ImmutableList.of(new StringLiteral("b"), new StringLiteral("a"))));
    assertExpression("position('a' in ('b'))", new FunctionCall(QualifiedName.of("strpos"), ImmutableList.of(new StringLiteral("b"), new StringLiteral("a"))));
}

Example 30 with StringLiteral

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

the class TestSqlParser method testSetSession.

@Test
public void testSetSession() {
    assertStatement("SET SESSION foo = 'bar'", new SetSession(QualifiedName.of("foo"), new StringLiteral("bar")));
    assertStatement("SET SESSION foo.bar = 'baz'", new SetSession(QualifiedName.of("foo", "bar"), new StringLiteral("baz")));
    assertStatement("SET SESSION foo.bar.boo = 'baz'", new SetSession(QualifiedName.of("foo", "bar", "boo"), new StringLiteral("baz")));
    assertStatement("SET SESSION foo.bar = 'ban' || 'ana'", new SetSession(QualifiedName.of("foo", "bar"), new FunctionCall(QualifiedName.of("concat"), ImmutableList.of(new StringLiteral("ban"), new StringLiteral("ana")))));
}