21.4.28 ndb_show_tables — Display List of NDB Tables

ndb_show_tables displays a list of all NDB database objects in the cluster. By default, this includes not only both user-created tables and NDB system tables, but NDB-specific indexes, internal triggers, and NDB Cluster Disk Data objects as well.

The following table includes options that are specific to the NDB Cluster native backup restoration program ndb_show_tables. Additional descriptions follow the table. For options common to most NDB Cluster programs (including ndb_show_tables), see Section 21.4.32, “Options Common to NDB Cluster Programs — Options Common to NDB Cluster Programs”.

Table 21.261 Command-line options for the ndb_show_tables program

Format Description Added, Deprecated, or Removed

--database=string,

-d

Specifies database in which table is found; database name must be followed by table name

(Supported in all MySQL 5.7 based releases)

--loops=#,

-l

Number of times to repeat output

(Supported in all MySQL 5.7 based releases)

--parsable,

-p

Return output suitable for MySQL LOAD DATA statement

(Supported in all MySQL 5.7 based releases)

--show-temp-status

Show table temporary flag

(Supported in all MySQL 5.7 based releases)

--type=#,

-t

Limit output to objects of this type

(Supported in all MySQL 5.7 based releases)

--unqualified,

-u

Do not qualify table names

(Supported in all MySQL 5.7 based releases)


Usage

ndb_show_tables [-c connection_string]

  • --database, -d

    Specifies the name of the database in which the desired table is found. If this option is given, the name of a table must follow the database name.

    If this option has not been specified, and no tables are found in the TEST_DB database, ndb_show_tables issues a warning.

  • --loops, -l

    Specifies the number of times the utility should execute. This is 1 when this option is not specified, but if you do use the option, you must supply an integer argument for it.

  • --parsable, -p

    Using this option causes the output to be in a format suitable for use with LOAD DATA.

  • --show-temp-status

    If specified, this causes temporary tables to be displayed.

  • --type, -t

    Can be used to restrict the output to one type of object, specified by an integer type code as shown here:

    • 1: System table

    • 2: User-created table

    • 3: Unique hash index

    Any other value causes all NDB database objects to be listed (the default).

  • --unqualified, -u

    If specified, this causes unqualified object names to be displayed.

Note

Only user-created NDB Cluster tables may be accessed from MySQL; system tables such as SYSTAB_0 are not visible to mysqld. However, you can examine the contents of system tables using NDB API applications such as ndb_select_all (see Section 21.4.25, “ndb_select_all — Print Rows from an NDB Table”).

Prior to NDB 7.5.18 and 7.6.14, this program printed NDBT_ProgramExit - status upon completion of its run, due to an unnecessary dependency on the NDBT testing library. This dependency is has now been removed, eliminating the extraneous output.


首页