• 2021-04-14 问题

    SQL查询命令的结构是SELECT…FROM…WHERE… GROUP BY…HAVING…ORDER BY…,其中指定查询条件的短语是 A.SELECT B.FROM C.WHERE D.ORDER BY

    SQL查询命令的结构是SELECT…FROM…WHERE… GROUP BY…HAVING…ORDER BY…,其中指定查询条件的短语是 A.SELECT B.FROM C.WHERE D.ORDER BY

  • 2021-04-14 问题

    SQL查询命令的结构是:SELECT…FROM…WHERE…GROUP BY…HAVING…ORDER BY…其中,使用HAVING时必须配合使用的短语是( )。 A.FROM B.GROUP BY C.WHERE D.ORDER BY

    SQL查询命令的结构是:SELECT…FROM…WHERE…GROUP BY…HAVING…ORDER BY…其中,使用HAVING时必须配合使用的短语是( )。 A.FROM B.GROUP BY C.WHERE D.ORDER BY

  • 2022-06-19 问题

    以下哪个方法不属于标准查询运算符?() A: A.Count() B: B.Add() C: C.Where() D: D.Select()

    以下哪个方法不属于标准查询运算符?() A: A.Count() B: B.Add() C: C.Where() D: D.Select()

  • 2022-06-07 问题

    下列哪些描述是正确的。( )A.聚合函数的运算对象可以是列,也可以是表达式。B.having子句可以实现where子句额功能,但where子句不能实现having子句的功能。C.where子句中可以包含聚合函数。D.order by子句可以对聚合函数的运算结果排序。 A: 聚合函数的运算对象可以是列,也可以是表达式。 B: having子句可以实现where子句额功能,但where子句不能实现having子句的功能。 C: where子句中可以包含聚合函数。 D: order by子句可以对聚合函数的运算结果排序。

    下列哪些描述是正确的。( )A.聚合函数的运算对象可以是列,也可以是表达式。B.having子句可以实现where子句额功能,但where子句不能实现having子句的功能。C.where子句中可以包含聚合函数。D.order by子句可以对聚合函数的运算结果排序。 A: 聚合函数的运算对象可以是列,也可以是表达式。 B: having子句可以实现where子句额功能,但where子句不能实现having子句的功能。 C: where子句中可以包含聚合函数。 D: order by子句可以对聚合函数的运算结果排序。

  • 2022-05-27 问题

    Theschool_____Ivisitedlastyearwasnottheone_____Ionceworked. A: which;where B: which;which C: where;which D: where;where

    Theschool_____Ivisitedlastyearwasnottheone_____Ionceworked. A: which;where B: which;which C: where;which D: where;where

  • 2022-06-06 问题

    ____ you have hidden my umbrella ? A: It is where that B: Where it is C: Is it where that D: Where is it that

    ____ you have hidden my umbrella ? A: It is where that B: Where it is C: Is it where that D: Where is it that

  • 2022-06-06 问题

    2. – Can you tell me _______? A: where the bank is B: where is the bank C: the bank is where D: the bank where is

    2. – Can you tell me _______? A: where the bank is B: where is the bank C: the bank is where D: the bank where is

  • 2022-05-28 问题

    ________ my baseball? It’s under the chair. A: Where B: Where’s C: Where are

    ________ my baseball? It’s under the chair. A: Where B: Where’s C: Where are

  • 2021-04-14 问题

    用be动词填空 Where _ the phone? Where _ Casey? Where _ Stacey? Where _ Jason and Brad? Where _ Fred?

    用be动词填空 Where _ the phone? Where _ Casey? Where _ Stacey? Where _ Jason and Brad? Where _ Fred?

  • 2022-05-31 问题

    The visitor asked John ______. A: where was the park B: B. where the park is C: where the park was

    The visitor asked John ______. A: where was the park B: B. where the park is C: where the park was

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