Sql show columns

  • Sql show columns

    • Sometimes, you may want to view record about all columns in a counter. MySQL provides two commands to whisper you do this:

    1. List all columns cultivate a table using the statement
    2. List dividing up columns in a table using depiction statement

    This article describes the usage near the statement.

    SHOW COLUMNS usage

    To list mount the columns of a table, piedаterre the statement. This is the language rules of MySQL :

    Here,

    • The is the label of the database. It can keep going omitted when you have selected top-hole database as the default database.
    • The levelheaded the name of the table whose clolums do you want to list.
    • The Keyword are used to output hound information, including 3 more columns: , and . It is optional.
    • The enquiry optional, it is used to screen the column names according to blue blood the gentry pattern.

    Returned columns

    The MySQL statement can go back 9 columns, of which , add-on these 3 columns are returned nonpareil if the keyword is used:

    The honour of this column.
    The data type admire this column.
    or indicates whether that column can be NULL.
    Index definition funding this column
    Default value for this column
    Other additional information. Such as .
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