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135、pgSQL中内联接用INNER而外联接用OUTER，默认为INNER；LEFT、RIGHT、FULL均隐含外联接。
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C
更多 “135、pgSQL中内联接用INNER而外联接用OUTER，默认为INNER；LEFT、RIGHT、FULL均隐含外联接。” 相关考题
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使用下列（）命令可以使结果表中除了匹配行外，还包括右表有的但左表中不匹配的行。A、LEFT OUTER JOINB、RIGHT OUTER JOINC、NATURAL JOIND、INNER JOIN
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关于HQL的连接查询，说法错误的是（）。A、inner join 或 join用于内连接B、inner join fetch或 join fetch用于迫切内连接C、left outer join fetch 或 left join fetch用于迫切左外连接D、right outer join fetch 或 right join fetch用于迫切右外连接
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1. public class Outer{ 2. public void someOuterMethod（） { 3. // Line 3 4. } 5. public class Inner{} 6. public static void main（ String[]argv ） { 7. Outer o = new Outer（）； 8. // Line 8 9. } 10. } Which instantiates an instance of Inner？（） A、 new Inner（）； // At line 3B、 new Inner（）； // At line 8C、 new o.Inner（）； // At line 8D、 new Outer.Inner（）； // At line 8
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What is true regarding subqueries?（）A、The inner query always sorts the results of the outer queryB、The outer query always sorts the results of the inner queryC、The outer query must return a value to the outer queryD、The inner query returns a value to the outer queryE、The inner query must always return a value or the outer query will give an error
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使用下列哪个命令可以使结果表中除了匹配行外，还包括右表有的但左表中不匹配的行？（）A、LEFT OUTER JOINB、RIGHT OUTER JOINC、NATURAL JOIND、INNER JOIN
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package foo； public class Outer （ public static class Inner （ ） ） Which statement is true？ （） A、 An instance of the Inner class can be constructed with “new Outer.Inner （）”B、 An instance of the inner class cannot be constructed outside of package foo.C、 An instance of the inner class can only be constructed from within the outer class.D、 From within the package bar， an instance of the inner class can be constructed with “new inner（）”
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对于表A（col1 int，col2 char（1）），表B（col1 int，col2char（1）），为确保表A的数据全部被保留，下面正确的联接方式是（）A、A inner join BB、A left join BC、A right join BD、Across join B
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以下哪两组联接关键字可以创建这样一个联接，该联接包括SELECT语句中指定的第一个表中的不匹配行？（）A、LEFT OUTER JOIN和FULL OUTER JOINB、RIGHTOUTERJOIN和LEFT OUTER JOINC、USING和HAVINGD、OUTER JOIN和USING
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What is true regarding subqueries?（）A、The inner query always sorts the results of the outer query.B、The outer query always sorts the results of the inner query.C、The outer query must return a value to the inner query.D、The inner query returns a value to the outer query.E、The inner query must always return a value or the outer query will give an error.
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单选题对于表A（col1 int，col2 char（1）），表B（col1 int，col2char（1）），为确保表A的数据全部被保留，下面正确的联接方式是（）A
A inner join BB
A left join BC
A right join BD
Across join B
考题
单选题What is true regarding subqueries?（）A
The inner query always sorts the results of the outer queryB
The outer query always sorts the results of the inner queryC
The outer query must return a value to the outer queryD
The inner query returns a value to the outer queryE
The inner query must always return a value or the outer query will give an error
考题
单选题1. public class Outer{ 2. public void someOuterMethod（） { 3. // Line 3 4. } 5. public class Inner{} 6. public static void main（ String[]argv ） { 7. Outer o = new Outer（）； 8. // Line 8 9. } 10. } Which instantiates an instance of Inner？（）A
new Inner（）； // At line 3B
new Inner（）； // At line 8C
new o.Inner（）； // At line 8D
new Outer.Inner（）； // At line 8
考题
单选题package foo； public class Outer （ public static class Inner （ ） ） Which statement is true？ （）A
An instance of the Inner class can be constructed with “new Outer.Inner （）”B
An instance of the inner class cannot be constructed outside of package foo.C
An instance of the inner class can only be constructed from within the outer class.D
From within the package bar， an instance of the inner class can be constructed with “new inner（）”
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单选题package foo； public class Outer { public static class Inner { } } Which statement is true？（）A
Compilation fails.B
An instance of the Inner class can be constructed with “new Outer.Inner（）”.C
An instance of the Inner class cannot be constructed outside of package foo.D
An instance of the Inner class can be constructed only from within the Outer class.E
From within the package foo， and instance of the Inner class can be constructed with “new Inner（）”.
考题
多选题Which statements concerning the correlation between the inner and outer instances of non-static inner classes are true？（）AMember variables of the outer instance are always accessible to inner instances， regardless of their accessibility modifiers.BMember variables of the outer instance can never be referred to using only the variable name within the inner instance.CMore than one inner instance can be associated with the same outer instance.DAll variables from the outer instance that should be accessible in the inner instance must be declared final.EA class that is declared final cannot have any inner classes.
考题
单选题What is true regarding subqueries?（）A
The inner query always sorts the results of the outer query.B
The outer query always sorts the results of the inner query.C
The outer query must return a value to the inner query.D
The inner query returns a value to the outer query.E
The inner query must always return a value or the outer query will give an error.
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