Examples of org.teiid.query.sql.lang.Query

org.teiid.query.sql.lang.Query

A representation of a data query. A query consists of various parts, referred to as clauses. The following list the types of clauses that a query can hold, and their purpose:

 CLAUSE          PURPOSE =========       ============================================== Select          Defines the variables data to be retrieved for From			Defines the groups to retrieve data from Criteria        Defines constraints on data retrieval ("where") GroupBy			Defines how rows being returned should be grouped Having			Defines how groups should be filtered, also a criteria OrderBy         Defines how the results should be sorted Option			Defines any extra options on the query

        from.addClause(sfc);
        
        Select select = new Select();
        select.addSymbol(new ElementSymbol("x.a")); //$NON-NLS-1$
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        helpTest("SELECT X.A FROM ((exec proc1('param1'))) AS X", "SELECT X.A FROM (EXEC proc1('param1')) AS X", query); //$NON-NLS-1$ //$NON-NLS-2$
    }

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        query.setCriteria(criteria);
        
        Expression expr = new Constant("aString"); //$NON-NLS-1$
        
        AssignmentStatement queryStmt = new AssignmentStatement(a, query);
        AssignmentStatement exprStmt = new AssignmentStatement(a, expr);

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        helpBlockTest("BEGIN DECLARE short a; END", "BEGIN"+"\n"+"DECLARE short a;"+"\n"+"END", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$ //$NON-NLS-5$ //$NON-NLS-6$
            block);
    }
       
    @Test public void testCommandStatement() throws Exception {
        Query query = sampleQuery();
        
        Command sqlCmd = query;
        CommandStatement cmdStmt = new CommandStatement(sqlCmd);
   
        helpStmtTest("SELECT a1 FROM g WHERE a2 = 5;", "SELECT a1 FROM g WHERE a2 = 5;", //$NON-NLS-1$ //$NON-NLS-2$

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        query.setCriteria(criteria);
        return query;
    }

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        query.setCriteria(criteria);
        
        AssignmentStatement queryStmt = new AssignmentStatement(var1, query);
              
        Block ifBlock = new Block();      
        ifBlock.addStatement(queryStmt);
        
        //else block 
        ElementSymbol var2 = new ElementSymbol("var2"); //$NON-NLS-1$
        Statement elseDeclStmt = new DeclareStatement(var2, shortType);     
        
        List elseSymbols = new ArrayList();
        elseSymbols.add(new ElementSymbol("b1"));  //$NON-NLS-1$
        Select elseSelect = new Select(elseSymbols); 
    
        Query elseQuery = new Query();
        elseQuery.setSelect(elseSelect);
        elseQuery.setFrom(from);
        elseQuery.setCriteria(criteria);
        
        Command elseQueryCmd = elseQuery;
        AssignmentStatement elseQueryStmt = new AssignmentStatement(var2, elseQuery);
        
        Block elseBlock = new Block();

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query elseQuery = new Query();
        elseQuery.setSelect(elseSelect);
        elseQuery.setFrom(from);
        elseQuery.setCriteria(criteria);
        
        AssignmentStatement elseQueryStmt = new AssignmentStatement(var2, elseQuery);
        
        Block elseBlock = new Block();
        List elseStmts = new ArrayList();

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        query.setCriteria(criteria);
        
        AssignmentStatement queryStmt = new AssignmentStatement(var1, query);
              
        Block ifBlock = new Block();      
        ifBlock.addStatement(queryStmt);
        
        //else block 
        ElementSymbol var2 = new ElementSymbol("var2"); //$NON-NLS-1$
        Statement elseDeclStmt = new DeclareStatement(var2, shortType);     
        
        List elseSymbols = new ArrayList();
        elseSymbols.add(new ElementSymbol("b1"));  //$NON-NLS-1$
        Select elseSelect = new Select(elseSymbols); 
    
        Query elseQuery = new Query();
        elseQuery.setSelect(elseSelect);
        elseQuery.setFrom(from);
        elseQuery.setCriteria(criteria);
        
        AssignmentStatement elseQueryStmt = new AssignmentStatement(var2, elseQuery);
        
        Block elseBlock = new Block();
        List elseStmts = new ArrayList();

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        query.setCriteria(criteria);
        
        AssignmentStatement queryStmt = new AssignmentStatement(var1, query);
              
        Block ifBlock = new Block();      
        ifBlock.addStatement(queryStmt);
        
        //else block 
        ElementSymbol var2 = new ElementSymbol("var2"); //$NON-NLS-1$
        Statement elseDeclStmt = new DeclareStatement(var2, shortType);     
        
        List elseSymbols = new ArrayList();
        elseSymbols.add(new ElementSymbol("b1"));  //$NON-NLS-1$
        Select elseSelect = new Select(elseSymbols); 
    
        Query elseQuery = new Query();
        elseQuery.setSelect(elseSelect);
        elseQuery.setFrom(from);
        elseQuery.setCriteria(criteria);
        
        AssignmentStatement elseQueryStmt = new AssignmentStatement(var2, elseQuery);
        
        Block elseBlock = new Block();
        List elseStmts = new ArrayList();

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        query.setCriteria(criteria);
        
        AssignmentStatement queryStmt = new AssignmentStatement(var1, query);
              
        Block ifBlock = new Block();      
        ifBlock.addStatement(queryStmt);
        
        //else block 
        ElementSymbol var2 = new ElementSymbol("var2"); //$NON-NLS-1$
        Statement elseDeclStmt = new DeclareStatement(var2, shortType);     
        
        List elseSymbols = new ArrayList();
        elseSymbols.add(new ElementSymbol("b1"));  //$NON-NLS-1$
        Select elseSelect = new Select(elseSymbols); 
    
        Query elseQuery = new Query();
        elseQuery.setSelect(elseSelect);
        elseQuery.setFrom(from);
        elseQuery.setCriteria(criteria);
        
        AssignmentStatement elseQueryStmt = new AssignmentStatement(var2, elseQuery);
        
        Block elseBlock = new Block();
        List elseStmts = new ArrayList();

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        from.addGroup(new GroupSymbol("g")); //$NON-NLS-1$
        
        Criteria criteria = new CompareCriteria(new ElementSymbol("a2"), CompareCriteria.EQ,  //$NON-NLS-1$
            new Constant(new Integer(5)));
        
        Query query = new Query();
        query.setSelect(select);
        query.setFrom(from);
        query.setCriteria(criteria);
        
        AssignmentStatement queryStmt = new AssignmentStatement(var1, query);
              
        Block ifBlock = new Block();      
        ifBlock.addStatement(queryStmt);
        
        //else block 
        ElementSymbol var2 = new ElementSymbol("var2"); //$NON-NLS-1$
        Statement elseDeclStmt = new DeclareStatement(var2, shortType);     
        
        List elseSymbols = new ArrayList();
        elseSymbols.add(new ElementSymbol("b1"));  //$NON-NLS-1$
        Select elseSelect = new Select(elseSymbols); 
    
        Query elseQuery = new Query();
        elseQuery.setSelect(elseSelect);
        elseQuery.setFrom(from);
        elseQuery.setCriteria(criteria);
        
        AssignmentStatement elseQueryStmt = new AssignmentStatement(var2, elseQuery);
        
        Block elseBlock = new Block();
        List elseStmts = new ArrayList();

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org.teiid.dqp.internal.datamgr.TestQueryImpl

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org.teiid.dqp.internal.datamgr.TestSubqueryCompareCriteriaImpl

org.teiid.dqp.internal.datamgr.TestSubqueryInCriteriaImpl

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