17.4.19. ndb_select_all — Print Rows from an NDB Table

ndb_select_all prints all rows from an NDB table to stdout.

Usage

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

The following table includes options that are specific to the MySQL Cluster native backup restoration program ndb_select_all. Additional descriptions follow the table. For options common to most MySQL Cluster programs (including ndb_select_all), see Section 17.4.25, "Options Common to MySQL Cluster Programs — Options Common to MySQL Cluster Programs".

Table 17.23. ndb_select_all Options and Variables: MySQL ClusterNDB 7.3

Format	Description	Added / Removed
`--database=dbname`, `-d`	Name of the database in which the table is found	All MySQL 5.6 based releases
`--parallelism=#`, `-p`	Degree of parallelism	All MySQL 5.6 based releases
`--lock=#`, `-l`	Lock type	All MySQL 5.6 based releases
`--order=index`, `-o`	Sort resultset according to index whose name is supplied	All MySQL 5.6 based releases
`--descending`, `-z`	Sort resultset in descending order (requires order flag)	All MySQL 5.6 based releases
`--header`, `-h`	Print header (set to 0\|FALSE to disable headers in output)	All MySQL 5.6 based releases
`--useHexFormat`, `-x`	Output numbers in hexadecimal format	All MySQL 5.6 based releases
`--delimiter=char`, `-D`	Set a column delimiter	All MySQL 5.6 based releases
`--disk`	Print disk references (useful only for Disk Data tables having nonindexed columns)	All MySQL 5.6 based releases
`--rowid`	Print rowid	All MySQL 5.6 based releases
`--gci`	Include GCI in output	All MySQL 5.6 based releases
`--tup`, `-t`	Scan in tup order	All MySQL 5.6 based releases
`--nodata`	Do not print table column data	All MySQL 5.6 based releases

--database=dbname, -d dbname

Name of the database in which the table is found. The default value is TEST_DB.
parallelism=#, -p #

Specifies the degree of parallelism.
--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.
--order=index_name, -o index_name

Orders the output according to the index named index_name. Note that this is the name of an index, not of a column, and that the index must have been explicitly named when created.
--descending, -z

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

Excludes column headers from the output.
--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.
--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.
--rowid

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

Adds a column to the output showing the global checkpoint at which each row was last updated. See Section 17.1, "MySQL Cluster Overview", and Section 17.5.6.2, "MySQL Cluster Log Events", for more information about checkpoints.
--tupscan, -t

Scan the table in the order of the tuples.
--nodata

Causes any table data to be omitted.

Sample Output

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:

shell> ./ndb_select_all -c localhost fish -d
        ctest1id      name3       [shark]6       [puffer]2       [tuna]4       [manta ray]5       [grouper]1       [guppy]6 rows returnedNDBT_ProgramExit: 0 - OK

Note that all string values are enclosed by square brackets ("[...]") in the output of ndb_select_all. For a further 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 DISKENGINE=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:

shell> ./ndb_select_all -d ctest1 dogs -o ix -z --gci
        --diskGCI     id name          breed        DISK_REF834461  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 returnedNDBT_ProgramExit: 0 - OK