MySQL :: MySQL 8.4 Reference Manual :: 25.5.8 ndb_delete_all

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MySQL 8.4 Reference Manual / ... / ndb_delete_all — Delete All Rows from an NDB Table

25.5.8 ndb_delete_all — 从 NDB 表中删除所有行

ndb_delete_all deletes all rows from the given NDB table. In some cases, this can be much faster than DELETE or even TRUNCATE TABLE.

ndb_delete_all -c connection_string tbl_name -d db_name

This deletes all rows from the table named tbl_name in the database named db_name. It is exactly equivalent to executing TRUNCATE db_name.tbl_name in MySQL.

Options that can be used with ndb_delete_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, -d

Command-Line Format	`--database=name`
Type	String
Default Value	`TEST_DB`

Name of the database containing the table to delete from.

--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).

--diskscan

Command-Line Format	`--diskscan`

Run a disk scan.

--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.

--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.

--print-defaults

Command-Line Format	`--print-defaults`

Print program argument list and exit.

--transactional, -t

Use of this option causes the delete operation to be performed as a single transaction.

Warning

With very large tables, using this option may cause the number of operations available to the cluster to be exceeded.
--tupscan

Run a tuple scan.

--usage

Command-Line Format	`--usage`

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

--version

Command-Line Format	`--version`

Display version information and exit.

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