Mysql Basic

Mysql Basic

Easy Questions

MYSQL

MySQL Subquery
MySQL Character Set
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Mysql Basic
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MySQL Type Conversion in Expression Evaluation
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  1. Which server mode value enables use of double quotes to wrap identifier names?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    In MySQL, use of double quotes is enabled when the server SQL mode ‘ANSI_QUOTES’ is set. The use of backticks is still allowed. For example, SELECT TABLE “my table” is a statement that is allowed.

  1. What does a fully qualified table name consist of?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: C

    MySQL identifiers use qualifiers. An element of a database has a fully qualified name. A database table in MySQL has the fully qualified name as the database name followed by the table name.

  1. What is the maximum length for alias names in terms of characters?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: D

    The identifiers in MySQL have a maximum length of 64 characters. However, the alias names for identifiers can have the number of characters up to 256. Aliases can also be quoted or unquoted.

  1. Which server mode value disables use of built in function names as identifiers?










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    The Server SQL mode value ‘IGNORE_FUNC’ is used to restrict the identifier naming conventions. When this is enabled, the names of built in functions can no longer be used as identifiers.

  1. If no database has been selected, specifying a database qualifier is necessary.










  1. View Hint View Answer Discuss in Forum

    NA

    Correct Option: B

    When no database has been selected, not specifying the database qualifier would be confusing. A table cannot be referred to if the database qualfier is absent, since it would be unclear as to which database it belongs to.