View the number of fields in a table in the Oracle database

Source: Internet
Author: User
To query the total number of fields in a table in Oracle, use an SQL statement or

To query the total number of fields in a table in Oracle, use an SQL statement or

To query the total number of fields in a table in Oracle, use an SQL statement or

  • The number of fields in the specified table can be found.

    The following is a rough view:

    Select tname, count (*) from col group by tname;Now I think of mysql:

    Directly use functions to solve the problem:

    Another way is to use the system table: in mysql, you want to know how many databases are in the database: How many tables are in the mysql database:

    In fact, most databases and tables in the system table information_schema will have records. So study this table.

    For more information about Oracle, see the Oracle topic page? Tid = 12

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