MySQL :: MySQL 8.4 Reference Manual :: 25.5.25 ndb_select_all

version 8.4

8.0 current
5.7

8.0 Japanese

MySQL 8.4 Reference Manual / ... / ndb_select_all — Print Rows from an NDB Table

25.5.25 ndb_select_all — 打印 NDB 表中的行

ndb_select_all prints all rows from an NDB table to stdout.

ndb_select_all -c connection_string tbl_name -d db_name [> file_name]

Options that can be used with ndb_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.

--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.

--core-file

Command-Line Format	`--core-file`

Write core file on error; used in debugging.

--database=dbname, -d dbname

Name of the database in which the table is found. The default value is TEST_DB.
--descending, -z

Sorts the output in descending order. This option can be used only in conjunction with the -o (--order) option.

--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).

--delimiter=character, -D character

Causes the character to be used as a column delimiter. Only table data columns are separated by this delimiter.

The default delimiter is the tab character.
--disk

Adds a disk reference column to the output. The column is nonempty only for Disk Data tables having nonindexed columns.
--gci

Adds a GCI column to the output showing the global checkpoint at which each row was last updated. See Section 25.2, “NDB Cluster Overview”, and Section 25.6.3.2, “NDB Cluster Log Events”, for more information about checkpoints.
--gci64

Adds a ROW$GCI64 column to the output showing the global checkpoint at which each row was last updated, as well as the number of the epoch in which this update occurred.

--help

Command-Line Format	`--help`

Display help text and exit.

--lock=lock_type, -l lock_type

Employs a lock when reading the table. Possible values for lock_type are:
- 0: Read lock
- 1: Read lock with hold
- 2: Exclusive read lock
There is no default value for this option.

--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.

--header=FALSE

Excludes column headers from the output.
--nodata

Causes any table data to be omitted.

--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-mgm-tls

Command-Line Format	`--ndb-mgm-tls=level`
Type	Enumeration
Default Value	`relaxed`
Valid Values	`relaxed` `strict`

Sets the level of TLS support required to connect to the management server; one of relaxed or strict. relaxed (the default) means that a TLS connection is attempted, but success is not required; strict means that TLS is required to connect.

--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.

--ndb-tls-search-path

Command-Line Format	`--ndb-tls-search-path=list`
Type	Path name
Default Value (Unix)	`$HOME/ndb-tls`
Default Value (Windows)	`$HOMEDIR/ndb-tls`

Specify a list of directories to search for a CA file. On Unix platforms, the directory names are separated by colons (:); on Windows systems, the semicolon character (;) is used as the separator. A directory reference may be relative or absolute; it may contain one or more environment variables, each denoted by a prefixed dollar sign ($), and expanded prior to use.

Searching begins with the leftmost named directory and proceeds from left to right until a file is found. An empty string denotes an empty search path, which causes all searches to fail. A string consisting of a single dot (.) indicates that the search path limited to the current working directory.

If no search path is supplied, the compiled-in default value is used. This value depends on the platform used: On Windows, this is \ndb-tls; on other platforms (including Linux), it is $HOME/ndb-tls. This can be overridden by compiling NDB Cluster using -DWITH_NDB_TLS_SEARCH_PATH.

--no-defaults

Command-Line Format	`--no-defaults`

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

--order=index_name, -o index_name

Orders the output according to the index named index_name.

Note

This is the name of an index, not of a column; the index must have been explicitly named when created.
parallelism=#, -p #

Specifies the degree of parallelism.

--print-defaults

Command-Line Format	`--print-defaults`

Print program argument list and exit.

--rowid

Adds a ROWID column providing information about the fragments in which rows are stored.
--tupscan, -t

Scan the table in the order of the tuples.

--usage

Command-Line Format	`--usage`

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

--useHexFormat -x

Causes all numeric values to be displayed in hexadecimal format. This does not affect the output of numerals contained in strings or datetime values.

--version

Command-Line Format	`--version`

Display version information and exit.

Output from a MySQL SELECT statement:

mysql> SELECT * FROM ctest1.fish;
+----+-----------+
| id | name      |
+----+-----------+
|  3 | shark     |
|  6 | puffer    |
|  2 | tuna      |
|  4 | manta ray |
|  5 | grouper   |
|  1 | guppy     |
+----+-----------+
6 rows in set (0.04 sec)

Output from the equivalent invocation of ndb_select_all:

$> ./ndb_select_all -c localhost fish -d ctest1
id      name
3       [shark]
6       [puffer]
2       [tuna]
4       [manta ray]
5       [grouper]
1       [guppy]
6 rows returned

All string values are enclosed by square brackets ([...]) in the output of ndb_select_all. For another example, consider the table created and populated as shown here:

CREATE TABLE dogs (
    id INT(11) NOT NULL AUTO_INCREMENT,
    name VARCHAR(25) NOT NULL,
    breed VARCHAR(50) NOT NULL,
    PRIMARY KEY pk (id),
    KEY ix (name)
)
TABLESPACE ts STORAGE DISK
ENGINE=NDBCLUSTER;

INSERT INTO dogs VALUES
    ('', 'Lassie', 'collie'),
    ('', 'Scooby-Doo', 'Great Dane'),
    ('', 'Rin-Tin-Tin', 'Alsatian'),
    ('', 'Rosscoe', 'Mutt');

This demonstrates the use of several additional ndb_select_all options:

$> ./ndb_select_all -d ctest1 dogs -o ix -z --gci --disk
GCI     id name          breed        DISK_REF
834461  2  [Scooby-Doo]  [Great Dane] [ m_file_no: 0 m_page: 98 m_page_idx: 0 ]
834878  4  [Rosscoe]     [Mutt]       [ m_file_no: 0 m_page: 98 m_page_idx: 16 ]
834463  3  [Rin-Tin-Tin] [Alsatian]   [ m_file_no: 0 m_page: 34 m_page_idx: 0 ]
835657  1  [Lassie]      [Collie]     [ m_file_no: 0 m_page: 66 m_page_idx: 0 ]
4 rows returned

PREV HOME UP NEXT