6.23 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 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.

Table 6.18 Command-line options used with the program ndb_select_all

Format	Description	Added, Deprecated, or Removed
--character-sets-dir=path	Directory containing character sets	(Supported in all NDB releases based on MySQL 5.6)
--connect-retries=#	Number of times to retry connection before giving up	ADDED: NDB 7.4.9
--connect-retry-delay=#	Number of seconds to wait between attempts to contact management server	ADDED: NDB 7.4.9
--connect-string=connection-string, -c	Same as --ndb-connectstring	(Supported in all NDB releases based on MySQL 5.6)
--core-file	Write core file on error; used in debugging	(Supported in all NDB releases based on MySQL 5.6)
--database=dbname, -d	Name of database in which table is found	(Supported in all NDB releases based on MySQL 5.6)
--defaults-extra-file=path	Read given file after global files are read	(Supported in all NDB releases based on MySQL 5.6)
--defaults-file=path	Read default options from given file only	(Supported in all NDB releases based on MySQL 5.6)
--defaults-group-suffix=string	Also read groups with concat(group, suffix)	(Supported in all NDB releases based on MySQL 5.6)
--delimiter=char, -D	Set column delimiter	(Supported in all NDB releases based on MySQL 5.6)
--descending, -z	Sort resultset in descending order (requires --order)	(Supported in all NDB releases based on MySQL 5.6)
--disk	Print disk references (useful only for Disk Data tables having nonindexed columns)	(Supported in all NDB releases based on MySQL 5.6)
--gci	Include GCI in output	(Supported in all NDB releases based on MySQL 5.6)
--gci64	Include GCI and row epoch in output	(Supported in all NDB releases based on MySQL 5.6)
--header, -h	Print header (set to 0|FALSE to disable headers in output)	(Supported in all NDB releases based on MySQL 5.6)
--lock=#, -l	Lock type	(Supported in all NDB releases based on MySQL 5.6)
--login-path=path	Read given path from login file	(Supported in all NDB releases based on MySQL 5.6)
--help, -?	Display help text and exit	(Supported in all NDB releases based on MySQL 5.6)
--ndb-connectstring=connection-string, -c	Set connect string for connecting to ndb_mgmd. Syntax: "[nodeid=id;][host=]hostname[:port]". Overrides entries in NDB_CONNECTSTRING and my.cnf	(Supported in all NDB releases based on MySQL 5.6)
--ndb-mgmd-host=connection-string, -c	Same as --ndb-connectstring	(Supported in all NDB releases based on MySQL 5.6)
--ndb-nodeid=#	Set node ID for this node, overriding any ID set by --ndb-connectstring	(Supported in all NDB releases based on MySQL 5.6)
--ndb-optimized-node-selection	Enable optimizations for selection of nodes for transactions. Enabled by default; use --skip-ndb-optimized-node-selection to disable	(Supported in all NDB releases based on MySQL 5.6)
--no-defaults	Do not read default options from any option file other than login file	(Supported in all NDB releases based on MySQL 5.6)
--nodata	Do not print table column data	(Supported in all NDB releases based on MySQL 5.6)
--order=index, -o	Sort resultset according to index having this name	(Supported in all NDB releases based on MySQL 5.6)
--parallelism=#, -p	Degree of parallelism	(Supported in all NDB releases based on MySQL 5.6)
--print-defaults	Print program argument list and exit	(Supported in all NDB releases based on MySQL 5.6)
--rowid	Print row ID	(Supported in all NDB releases based on MySQL 5.6)
--tupscan, -t	Scan in tup order	(Supported in all NDB releases based on MySQL 5.6)
--usage, -?	Display help text and exit; same as --help	(Supported in all NDB releases based on MySQL 5.6)
--useHexFormat, -x	Output numbers in hexadecimal format	(Supported in all NDB releases based on MySQL 5.6)
--version, -V	Display version information and exit	(Supported in all NDB releases based on MySQL 5.6)

• --character-sets-dir

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

  Directory containing character sets.

• --connect-retries

  Command-Line Format	--connect-retries=#
  Introduced	5.6.28-ndb-7.4.9
  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=#
  Introduced	5.6.28-ndb-7.4.9
  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 Chapter 3, NDB Cluster Overview, and Section 7.3.2, “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.

• --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 connect 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.

• --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.

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 ctest1
id      name
3       [shark]
6       [puffer]
2       [tuna]
4       [manta ray]
5       [grouper]
1       [guppy]
6 rows returned
NDBT_ProgramExit: 0 - OK

All string values are enclosed by square brackets ([...]) in the output of ndb_select_all. Now 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:

shell> ./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
NDBT_ProgramExit: 0 - OK