【单选题】【消耗次数:1】
已知SN是一个字符型字段,下列SQL查询语句 SELECT SN FROM S WHERE SN LIKE ‘AB%’;的执行结果为( )。
找出含有3个字符′AB%′的所有SN字段
找出仅含3个字符且前两个字符为′AB′的SN字段
找出以字符′AB′开头的所有SN字段
找出含有字符′AB′的所有SN字段
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相关题目
【单选题】 已知SN是一个字符型字段,下列SQL查询语句SELECT SN FROM S WHERE SN LIKE ‘AB%’;的执行结果为( )。
①  找出含有3个字符′AB%′的所有SN字段
②  找出仅含3个字符且前两个字符为′AB′的SN字段
③  找出以字符′AB′开头的所有SN字段
④  找出含有字符′AB′的所有SN字段
【单选题】 从一个字符串中的第3个字符开始,获取5个字符,应使用()。
①  Len函数
②  .Mid函数
③  Left函数
④  Right函数
【单选题】 将两个字符串连接起来组成一个字符串时,选用( )函数。
①  strlen()
②  strcap()
③  strcat()
④  strcmp()
【单选题】 将两个字符串连接起来组成一个字符串时,选用( )函数。
①  strlen()
②  strcap()
③  strcat()
④  strcmp()
【单选题】 将两个字符串连接起来组成一个字符串时,选用的函数是?
①  strlen()
②  strcap()
③  strcat()
④  strcmp()
【单选题】 英文字母占用一个字符的位置,而汉字则占用( )个字符的位置
①  2
②  4
③  3
④  1
【单选题】 两个字符串相等的条件是( )。
①  两串的长度相等
②  两串包含的字符相同
③  两串的长度相等,并且两串包含的字符相同
④  两串的长度相等,并且对应位置上的字符相同
【单选题】 两个字符串相等的条件是( )。
①  两串的长度相等
②  两串包含的字符相同
③  两串的长度相等,并且两串包含的字符相同
④  两串的长度相等,并且对应位置上的字符相同
【单选题】 两个字符串相等的条件是( )。
①  A.两串的长度相等
②  B.两串包含的字符相同
③  C.两串的长度相等,并且两串包含的字符相同
④  D.两串的长度相等,并且对应位置上的字符相同
【判断题】 串的数据元素是一个字符。
①  正确
②  错误
随机题目
【单选题】 We can hear ____ from the back of the room.
①  just as good
②  just as easy
③  just as well
④  easily as well
【单选题】 She often says her greatest happiness ____ serving the handicapped children.
①  relies on
②  consists in
③  composes of
④  comprises in
【单选题】 The apple_____ very sweet.
①  is tasted
②  taste
③  tastes
④  are tasting
【单选题】 The poet has____ fame all his life, but has never experienced it.
①  pursued
②  followed
③  chased
④  traced
【单选题】 Although ____ Spanish, he attended the course.
①  he was knowing
②  he is knowing
③  having a knowledge of
④  knows
【单选题】 The board deemed it’s urgent that these files ____ right away.
①  had to be printed
②  should have been printed
③  must be printed
④  should be printed
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①  to have been created
②  to be created
③  having been created
④  being created
【单选题】 Here is some ____ advice to any young businessman.
①  variable
②  worthwhile
③  worthy
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【单选题】 You must have stayed up late last night, _____?
①  mustn’ t you
②  don’ t you
③  didn’ t you
④  needn’ t you
【单选题】 Mr. Milton prefers to resign ____ part in such dishonest business deals.
①  than take
②  than to take
③  rather than take
④  rather than to take