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

Example 6 with FunctionCall

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

the class TestCountConstantOptimizer method testCountConstantOptimizer.

@Test
public void testCountConstantOptimizer() throws Exception {
    CountConstantOptimizer optimizer = new CountConstantOptimizer();
    PlanNodeIdAllocator planNodeIdAllocator = new PlanNodeIdAllocator();
    Symbol countAggregationSymbol = new Symbol("count");
    Signature countAggregationSignature = new Signature("count", FunctionKind.AGGREGATE, parseTypeSignature(StandardTypes.BIGINT), parseTypeSignature(StandardTypes.BIGINT));
    ImmutableMap<Symbol, FunctionCall> aggregations = ImmutableMap.of(countAggregationSymbol, new FunctionCall(QualifiedName.of("count"), ImmutableList.of(new SymbolReference("expr"))));
    ImmutableMap<Symbol, Signature> functions = ImmutableMap.of(countAggregationSymbol, countAggregationSignature);
    ValuesNode valuesNode = new ValuesNode(planNodeIdAllocator.getNextId(), ImmutableList.of(new Symbol("col")), ImmutableList.of(ImmutableList.of()));
    AggregationNode eligiblePlan = new AggregationNode(planNodeIdAllocator.getNextId(), new ProjectNode(planNodeIdAllocator.getNextId(), valuesNode, Assignments.of(new Symbol("expr"), new LongLiteral("42"))), aggregations, functions, ImmutableMap.of(), ImmutableList.of(ImmutableList.of()), AggregationNode.Step.INTERMEDIATE, Optional.empty(), Optional.empty());
    assertTrue(((AggregationNode) optimizer.optimize(eligiblePlan, TEST_SESSION, ImmutableMap.of(), new SymbolAllocator(), new PlanNodeIdAllocator())).getAggregations().get(countAggregationSymbol).getArguments().isEmpty());
    AggregationNode ineligiblePlan = new AggregationNode(planNodeIdAllocator.getNextId(), new ProjectNode(planNodeIdAllocator.getNextId(), valuesNode, Assignments.of(new Symbol("expr"), new FunctionCall(QualifiedName.of("function"), ImmutableList.of(new Identifier("x"))))), aggregations, functions, ImmutableMap.of(), ImmutableList.of(ImmutableList.of()), AggregationNode.Step.INTERMEDIATE, Optional.empty(), Optional.empty());
    assertFalse(((AggregationNode) optimizer.optimize(ineligiblePlan, TEST_SESSION, ImmutableMap.of(), new SymbolAllocator(), new PlanNodeIdAllocator())).getAggregations().get(countAggregationSymbol).getArguments().isEmpty());
}

Example 7 with FunctionCall

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

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);
    QualifiedName name = getQualifiedName(context.qualifiedName());
    boolean distinct = isDistinct(context.setQuantifier());
    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);
        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);
        return new NullIfExpression(getLocation(context), (Expression) visit(context.expression(0)), (Expression) visit(context.expression(1)));
    }
    if (name.toString().equalsIgnoreCase("coalesce")) {
        check(!window.isPresent(), "OVER clause not valid for 'coalesce' function", context);
        check(!distinct, "DISTINCT 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);
        return new TryExpression(getLocation(context), (Expression) visit(getOnlyElement(context.expression())));
    }
    return new FunctionCall(getLocation(context), getQualifiedName(context.qualifiedName()), window, filter, distinct, visit(context.expression(), Expression.class));
}

Example 8 with FunctionCall

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

the class TestSqlParser method testCreateTableAsSelect.

@Test
public void testCreateTableAsSelect() throws Exception {
    Query query = simpleQuery(selectList(new AllColumns()), table(QualifiedName.of("t")));
    QualifiedName table = QualifiedName.of("foo");
    assertStatement("CREATE TABLE foo AS SELECT * FROM t", new CreateTableAsSelect(table, query, false, ImmutableMap.of(), true));
    assertStatement("CREATE TABLE IF NOT EXISTS foo AS SELECT * FROM t", new CreateTableAsSelect(table, query, true, ImmutableMap.of(), true));
    assertStatement("CREATE TABLE foo AS SELECT * FROM t WITH NO DATA", new CreateTableAsSelect(table, query, false, ImmutableMap.of(), false));
    ImmutableMap<String, Expression> properties = ImmutableMap.<String, Expression>builder().put("string", new StringLiteral("bar")).put("long", new LongLiteral("42")).put("computed", new FunctionCall(QualifiedName.of("concat"), ImmutableList.of(new StringLiteral("ban"), new StringLiteral("ana")))).put("a", new ArrayConstructor(ImmutableList.of(new StringLiteral("v1"), new StringLiteral("v2")))).build();
    assertStatement("CREATE TABLE foo " + "WITH ( string = 'bar', long = 42, computed = 'ban' || 'ana', a  = ARRAY[ 'v1', 'v2' ] ) " + "AS " + "SELECT * FROM t", new CreateTableAsSelect(table, query, false, properties, true));
    assertStatement("CREATE TABLE foo " + "WITH ( string = 'bar', long = 42, computed = 'ban' || 'ana', a  = ARRAY[ 'v1', 'v2' ] ) " + "AS " + "SELECT * FROM t " + "WITH NO DATA", new CreateTableAsSelect(table, query, false, properties, false));
}

Example 9 with FunctionCall

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

the class TestSqlParser method testSubstringBuiltInFunction.

@Test
public void testSubstringBuiltInFunction() {
    final String givenString = "ABCDEF";
    assertStatement(format("SELECT substring('%s' FROM 2)", givenString), new Query(Optional.empty(), new QuerySpecification(selectList(new FunctionCall(QualifiedName.of("substr"), Lists.newArrayList(new StringLiteral(givenString), new LongLiteral("2")))), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty()), Optional.empty(), Optional.empty()));
    assertStatement(format("SELECT substring('%s' FROM 2 FOR 3)", givenString), new Query(Optional.empty(), new QuerySpecification(selectList(new FunctionCall(QualifiedName.of("substr"), Lists.newArrayList(new StringLiteral(givenString), new LongLiteral("2"), new LongLiteral("3")))), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty()), Optional.empty(), Optional.empty()));
}

Example 10 with FunctionCall

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

the class TestShadowing method testCreateTableAsSelect.

@Test
public void testCreateTableAsSelect() throws Exception {
    handle.execute("CREATE TABLE \"my_test_table\" (column1 BIGINT, column2 DOUBLE)");
    SqlParser parser = new SqlParser();
    Query query = new Query(CATALOG, SCHEMA, ImmutableList.of(), "CREATE TABLE my_test_table AS SELECT 1 column1, CAST(2.0 AS DOUBLE) column2 LIMIT 1", ImmutableList.of(), null, null, ImmutableMap.of());
    QueryRewriter rewriter = new QueryRewriter(parser, URL, QualifiedName.of("tmp_"), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty(), 1, new Duration(10, SECONDS));
    Query rewrittenQuery = rewriter.shadowQuery(query);
    assertEquals(rewrittenQuery.getPreQueries().size(), 1);
    assertEquals(rewrittenQuery.getPostQueries().size(), 1);
    CreateTableAsSelect createTableAs = (CreateTableAsSelect) parser.createStatement(rewrittenQuery.getPreQueries().get(0));
    assertEquals(createTableAs.getName().getParts().size(), 1);
    assertTrue(createTableAs.getName().getSuffix().startsWith("tmp_"));
    assertFalse(createTableAs.getName().getSuffix().contains("my_test_table"));
    assertEquals(PrestoVerifier.statementToQueryType(parser, rewrittenQuery.getQuery()), READ);
    Table table = new Table(createTableAs.getName());
    SingleColumn column1 = new SingleColumn(new FunctionCall(QualifiedName.of("checksum"), ImmutableList.of(new Identifier("column1"))));
    SingleColumn column2 = new SingleColumn(new FunctionCall(QualifiedName.of("checksum"), ImmutableList.of(new FunctionCall(QualifiedName.of("round"), ImmutableList.of(new Identifier("column2"), new LongLiteral("1"))))));
    Select select = new Select(false, ImmutableList.of(column1, column2));
    QuerySpecification querySpecification = new QuerySpecification(select, Optional.of(table), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty(), Optional.empty());
    assertEquals(parser.createStatement(rewrittenQuery.getQuery()), new com.facebook.presto.sql.tree.Query(Optional.empty(), querySpecification, Optional.empty(), Optional.empty()));
    assertEquals(parser.createStatement(rewrittenQuery.getPostQueries().get(0)), new DropTable(createTableAs.getName(), true));
}