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MySQL 8.4 Reference Manual  /  ...  /  ndbinfo_select_all — Select From ndbinfo Tables

25.5.2 ndbinfo_select_all — Select From ndbinfo 表

ndbinfo_select_all is a client program that selects all rows and columns from one or more tables in the ndbinfo database

Not all ndbinfo tables available in the mysql client can be read by this program (see later in this section). In addition, ndbinfo_select_all can show information about some tables internal to ndbinfo which cannot be accessed using SQL, including the tables and columns metadata tables.

To select from one or more ndbinfo tables using ndbinfo_select_all, it is necessary to supply the names of the tables when invoking the program as shown here:

$> ndbinfo_select_all table_name1  [table_name2] [...]

For example:

$> ndbinfo_select_all logbuffers logspaces
== logbuffers ==
node_id log_type        log_id  log_part        total   used    high
5       0       0       0       33554432        262144  0
6       0       0       0       33554432        262144  0
7       0       0       0       33554432        262144  0
8       0       0       0       33554432        262144  0
== logspaces ==
node_id log_type        log_id  log_part        total   used    high
5       0       0       0       268435456       0       0
5       0       0       1       268435456       0       0
5       0       0       2       268435456       0       0
5       0       0       3       268435456       0       0
6       0       0       0       268435456       0       0
6       0       0       1       268435456       0       0
6       0       0       2       268435456       0       0
6       0       0       3       268435456       0       0
7       0       0       0       268435456       0       0
7       0       0       1       268435456       0       0
7       0       0       2       268435456       0       0
7       0       0       3       268435456       0       0
8       0       0       0       268435456       0       0
8       0       0       1       268435456       0       0
8       0       0       2       268435456       0       0
8       0       0       3       268435456       0       0
$>

Options that can be used with ndbinfo_select_all are shown in the following table. Additional descriptions follow the table.

  • --character-sets-dir

    Command-Line Format --character-sets-dir=path

    Directory containing character sets.

  • --core-file

    Command-Line Format --core-file

    Write core file on error; used in debugging.

  • --connect-retries

    Command-Line Format --connect-retries=#
    Type Integer
    Default Value 12
    Minimum Value 0
    Maximum Value 12

    Number of times to retry connection before giving up.

  • --connect-retry-delay

    Command-Line Format --connect-retry-delay=#
    Type Integer
    Default Value 5
    Minimum Value 0
    Maximum Value 5

    Number of seconds to wait between attempts to contact management server.

  • --connect-string

    Command-Line Format --connect-string=connection-string
    Type String
    Default Value [none]

    Same as --ndb-connectstring.

  • --defaults-extra-file

    Command-Line Format --defaults-extra-file=path
    Type String
    Default Value [none]

    Read given file after global files are read.

  • --defaults-file

    Command-Line Format --defaults-file=path
    Type String
    Default Value [none]

    Read default options from given file only.

  • --defaults-group-suffix

    Command-Line Format --defaults-group-suffix=string
    Type String
    Default Value [none]

    Also read groups with concat(group, suffix).

  • --delay=seconds

    Command-Line Format --delay=#
    Type Numeric
    Default Value 5
    Minimum Value 0
    Maximum Value MAX_INT

    This option sets the number of seconds to wait between executing loops. Has no effect if --loops is set to 0 or 1.

  • --help

    Command-Line Format --help

    Display help text and exit.

  • --login-path

    Command-Line Format --login-path=path
    Type String
    Default Value [none]

    Read given path from login file.

  • --no-login-paths

    Command-Line Format --no-login-paths

    Skips reading options from the login path file.

  • --loops=number, -l number

    Command-Line Format --loops=#
    Type Numeric
    Default Value 1
    Minimum Value 0
    Maximum Value MAX_INT

    This option sets the number of times to execute the select. Use --delay to set the time between loops.

  • --ndb-connectstring

    Command-Line Format --ndb-connectstring=connection-string
    Type String
    Default Value [none]

    Set connection string for connecting to ndb_mgmd. Syntax: [nodeid=id;][host=]hostname[:port]. Overrides entries in NDB_CONNECTSTRING and my.cnf.

  • --ndb-mgmd-host

    Command-Line Format --ndb-mgmd-host=connection-string
    Type String
    Default Value [none]

    Same as --ndb-connectstring.

  • --ndb-nodeid

    Command-Line Format --ndb-nodeid=#
    Type Integer
    Default Value [none]

    Set node ID for this node, overriding any ID set by --ndb-connectstring.

  • --ndb-optimized-node-selection

    Command-Line Format --ndb-optimized-node-selection

    Enable optimizations for selection of nodes for transactions. Enabled by default; use --skip-ndb-optimized-node-selection to disable.

  • --no-defaults

    Command-Line Format --no-defaults

    Do not read default options from any option file other than login file.

  • --print-defaults

    Command-Line Format --print-defaults

    Print program argument list and exit.

  • --usage

    Command-Line Format --usage

    Display help text and exit; same as --help.

  • --version

    Command-Line Format --version

    Display version information and exit.

ndbinfo_select_all is unable to read the following tables: