Data Types

Data Types

Easy Questions

MYSQL

MySQL Subquery
MySQL Character Set
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Mysql Basic
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MySQL Internationalization and Localization
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MySQL Type Conversion in Expression Evaluation
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Using Sequences
  1. The NUL (‘\0’) is same as the SQL NULL value.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: A

    MySQL recognizes many escape sequences like other programming languages. An escape sequence begin with a backslash character. The ‘\0’ is different from NULL. It is a zero valued byte.

  1. x’ffff’ in decimal is ___________










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: A

    In MySQL, string values are specified using the standard SQL notation x’val’. Here, val is pairs of hexadecimal digits ( ‘0’ through ‘ 9 ’ and ‘ a ’ through ‘ f ’). x’ffff’ is 65536 in decimal.

  1. X’61626364′ and X’61626364′ are respectively __________.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    In the numeric contexts, each hexadecimal number constant is treated as a number. Without adding a zero to it, a hexadecimal literal is treated as a string. Hence it is displayed as abcd.

  1. A BIT value in a result set is displayed as a binary string.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    In MySQL, the BIT values in the result set are displayed as binary strings. In order to convert them to integers, either a zero is added or the ‘CAST()’ operator is used to cast them.

  1. Which mode is used to turn off the special meaning of backslash and treat it as an ordinary character?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    To turn off the special meaning of backslash in MySQL, and treat it as an ordinary character, the SQL mode named NO_BACKSLASH_ESCAPES is enabled. The escape sequence is treated as characters.