南大通用数据库-Gbase-8a-学习-39-show命令汇总（持续更新）

目录

一、环境信息

二、show功能参数

三、show命令示例

1、SHOW LOAD LOGS（加载日志报错）

2、SHOW COLUMNS（列信息）

3、SHOW CREATE DATABASE（建库信息）

4、SHOW CREATE PROCEDURE （存储过程信息）

 5、SHOW CREATE TABLE （建表信息）

 6、SHOW TABLE LOCKS （表锁信息）

 7、SHOW ERRORS （上一条命令错误信息）

 8、SHOW STATUS （连接的状态信息）

 9、SHOW VARIABLES （参数信息）

 10、SHOW GRANTS （权限信息）

 11、SHOW INDEX （索引信息）

 12、SHOW ENGINES （存储引擎信息）

13、SHOW GCLUSTER NODES（调度节点信息）

 14、SHOW  NODES（数据节点信息）

---

一、环境信息

名称	值
CPU	Intel(R) Core(TM) i5-1035G1 CPU @ 1.00GHz
操作系统	CentOS Linux release 7.9.2009 (Core)
内存	3G
逻辑核数	2
Gbase8a版本	8.6.2-R43.34.27468a27

二、show功能参数

这些参数不一定所有show命令都支持的，注意哦。

参数名	描述
full	显示更加完整的信息。
like	模糊匹配。
where	过滤性更强，支持对返回结果进行过滤，就像我们平时用SQL一样。

三、show命令示例

1、SHOW LOAD LOGS（加载日志报错）

测试数据

[gbase@czg2 ~]$ cat TestData_2023_09_14.txt 
sun
czg

建表语句

gbase> CREATE TABLE CZG.TEST_2023_09_14 (DATA CHAR(1));
Query OK, 0 rows affected (Elapsed: 00:00:00.65)

加载错误

gbase> LOAD DATA INFILE 'file://192.168.142.12///home/gbase/TestData_2023_09_14.txt' into table CZG.TEST_2023_09_14 DATA_FORMAT 3 FIELDS TERMINATED BY '|' 
    -> MAX_BAD_RECORDS 0;
ERROR 1733 (HY000): (GBA-01EX-700) Gbase general error: Task 8650775 failed, [192.168.142.12:5050](GBA-02AD-0005)Failed to query in gnode:
DETAIL: (GBA-01-600) Gbase internal error: Task 8650775, Too many bad records!
SQL: LOAD /*+ TID('19333279') */ DATA INFILE '///home/gbase/TestData_2023_09_14.txt' INTO TABLE `czg`.`test_2023_09_14_n1` DATA_FORMAT 3 FILE_FORMAT UNDEFINED  FIELDS TERMINATED BY '|' MAX_BAD_RECORDS 0 HOST '::ffff:192.168.142.12' CURRENT_TIMESTAMP 1694679966 SCN_NUMBER 8650775 GCLUSTER_PORT 5258 INTO SERVER (H

通过show load logs查看报错信息。

gbase> show load logs 8650775 \G;
*************************** 1. row ***************************
    task_id: 8650775
    db_name: czg
    tb_name: test_2023_09_14
err_data_ip: ::ffff:192.168.142.12
  file_name: ///home/gbase/TestData_2023_09_14.txt
file_offset: 0
 record_len: 4
 err_column: 1
 err_reason: Data truncated

   err_data: sun

*************************** 2. row ***************************
    task_id: 8650775
    db_name: czg
    tb_name: test_2023_09_14
err_data_ip: ::ffff:192.168.142.12
  file_name: ///home/gbase/TestData_2023_09_14.txt
file_offset: 4
 record_len: 4
 err_column: 1
 err_reason: Data truncated

   err_data: czg

2 rows in set (Elapsed: 00:00:00.00)

ERROR: 
No query specified

2、SHOW COLUMNS（列信息）

语法树

SHOW [FULL] COLUMNS FROM table_name [FROM database_name] [LIKE 'pattern']

例子

gbase> show columns from testtab from czg;
+-------+--------------+------+-----+-------------------+-----------------------------+
| Field | Type         | Null | Key | Default           | Extra                       |
+-------+--------------+------+-----+-------------------+-----------------------------+
| a     | int(11)      | YES  |     | NULL              |                             |
| b     | double       | YES  |     | NULL              |                             |
| c     | varchar(100) | YES  | MUL | NULL              |                             |
| d     | text         | YES  |     | NULL              |                             |
| e     | blob         | YES  |     | NULL              |                             |
| f     | longblob     | YES  |     | NULL              |                             |
| g     | date         | YES  |     | NULL              |                             |
| h     | timestamp    | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
+-------+--------------+------+-----+-------------------+-----------------------------+
8 rows in set (Elapsed: 00:00:00.00)

gbase> show full columns from testtab from czg;
+-------+--------------+-----------------+------+-----+-------------------+-----------------------------+---------------------------------+-----------+
| Field | Type         | Collation       | Null | Key | Default           | Extra                       | Privileges                      | Comment   |
+-------+--------------+-----------------+------+-----+-------------------+-----------------------------+---------------------------------+-----------+
| a     | int(11)      | NULL            | YES  |     | NULL              |                             | select,insert,update,references | 总金额    |
| b     | double       | NULL            | YES  |     | NULL              |                             | select,insert,update,references |           |
| c     | varchar(100) | utf8_general_ci | YES  | MUL | NULL              |                             | select,insert,update,references |           |
| d     | text         | utf8_general_ci | YES  |     | NULL              |                             | select,insert,update,references |           |
| e     | blob         | NULL            | YES  |     | NULL              |                             | select,insert,update,references |           |
| f     | longblob     | NULL            | YES  |     | NULL              |                             | select,insert,update,references |           |
| g     | date         | NULL            | YES  |     | NULL              |                             | select,insert,update,references |           |
| h     | timestamp    | NULL            | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP | select,insert,update,references |           |
+-------+--------------+-----------------+------+-----+-------------------+-----------------------------+---------------------------------+-----------+
8 rows in set (Elapsed: 00:00:00.00)

gbase> show full columns from testtab from czg where Field = 'a';
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+-----------+
| Field | Type    | Collation | Null | Key | Default | Extra | Privileges                      | Comment   |
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+-----------+
| a     | int(11) | NULL      | YES  |     | NULL    |       | select,insert,update,references | 总金额    |
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+-----------+
1 row in set (Elapsed: 00:00:00.00)

gbase> show full columns from testtab from czg like 'b';
+-------+--------+-----------+------+-----+---------+-------+---------------------------------+---------+
| Field | Type   | Collation | Null | Key | Default | Extra | Privileges                      | Comment |
+-------+--------+-----------+------+-----+---------+-------+---------------------------------+---------+
| b     | double | NULL      | YES  |     | NULL    |       | select,insert,update,references |         |
+-------+--------+-----------+------+-----+---------+-------+---------------------------------+---------+
1 row in set (Elapsed: 00:00:00.00)

3、SHOW CREATE DATABASE（建库信息）

语法树

SHOW CREATE {DATABASE | SCHEMA} database_name;

例子

gbase> SHOW CREATE DATABASE CZG;
+----------+--------------------------------------------------+
| Database | Create Database                                  |
+----------+--------------------------------------------------+
| czg      | CREATE DATABASE "czg" DEFAULT CHARACTER SET utf8 |
+----------+--------------------------------------------------+
1 row in set (Elapsed: 00:00:00.00)

gbase> SHOW CREATE SCHEMA CZG;
+----------+--------------------------------------------------+
| Database | Create Database                                  |
+----------+--------------------------------------------------+
| czg      | CREATE DATABASE "czg" DEFAULT CHARACTER SET utf8 |
+----------+--------------------------------------------------+
1 row in set (Elapsed: 00:00:00.31)

4、SHOW CREATE PROCEDURE （存储过程信息）

语法树

SHOW CREATE PROCEDURE [database_name.]proc_name;

例子

gbase> SHOW CREATE PROCEDURE czg.GenerateTestData;
+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| Procedure        | sql_mode                                                                                                                                                                                            | Create Procedure                                                                                                                                                                                                                                                                                                                                                             | character_set_client | collation_connection | Database Collation |
+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
| GenerateTestData | PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ONLY_FULL_GROUP_BY,NO_AUTO_VALUE_ON_ZERO,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION,PAD_CHAR_TO_FULL_LENGTH | CREATE DEFINER="root"@"%" PROCEDURE "GenerateTestData"(num int)
begin
    declare tempval int;
    
    set tempval = 1;
    set autocommit = off;
    label: loop
        insert into czg values(tempval);
        if tempval >= num then 
            leave label;
        else
            set tempval = tempval + 1;
        end if;
    end loop label;
    commit;
end | utf8                 | utf8_general_ci      | utf8_general_ci    |
+------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+
1 row in set (Elapsed: 00:00:00.16)

 5、SHOW CREATE TABLE （建表信息）

语法树

SHOW CREATE TABLE [database_name.]table_name;

例子

gbase> show create table czg.czg;
+-------+-------------------------------------------------------------------------------------------------------------------+
| Table | Create Table                                                                                                      |
+-------+-------------------------------------------------------------------------------------------------------------------+
| czg   | CREATE TABLE "czg" (
  "a" int(11) DEFAULT NULL
) ENGINE=EXPRESS DEFAULT CHARSET=utf8 TABLESPACE='sys_tablespace' |
+-------+-------------------------------------------------------------------------------------------------------------------+
1 row in set (Elapsed: 00:00:00.30)

gbase> show full create table czg.czg;
+-------+---------------------------------------------------------------------------------------------------------------------------------------------------+
| Table | Create Table                                                                                                                                      |
+-------+---------------------------------------------------------------------------------------------------------------------------------------------------+
| czg   | CREATE TABLE "czg" (
  "a" int(11) DEFAULT NULL
) ENGINE=EXPRESS TID(24577) UID(1) DEFAULT CHARSET=utf8 TABLESPACE='sys_tablespace' COLUMN_IDS(0) |
+-------+---------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set (Elapsed: 00:00:00.13)

 6、SHOW TABLE LOCKS （表锁信息）

测试版本没模拟出来，后面再摸索一下。

gbase> LOCK TABLE CZG.TESTTAB WRITE;
Query OK, 0 rows affected (Elapsed: 00:00:00.00)

gbase> desc CZG.TESTTAB;
+-------+--------------+------+-----+-------------------+-----------------------------+
| Field | Type         | Null | Key | Default           | Extra                       |
+-------+--------------+------+-----+-------------------+-----------------------------+
| a     | int(11)      | YES  |     | NULL              |                             |
| b     | double       | YES  |     | NULL              |                             |
| c     | varchar(100) | YES  | MUL | NULL              |                             |
| d     | text         | YES  |     | NULL              |                             |
| e     | blob         | YES  |     | NULL              |                             |
| f     | longblob     | YES  |     | NULL              |                             |
| g     | date         | YES  |     | NULL              |                             |
| h     | timestamp    | NO   |     | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
+-------+--------------+------+-----+-------------------+-----------------------------+
8 rows in set (Elapsed: 00:00:00.10)

gbase> INSERT INTO CZG.TESTTAB(A) VALUES(1);
Query OK, 1 row affected (Elapsed: 00:00:00.74)

gbase> SHOW TABLE LOCKS CZG.TESTTAB;
Empty set (Elapsed: 00:00:00.00)

 7、SHOW ERRORS （上一条命令错误信息）

例子

gbase> set global autocommit = 0;
ERROR 1228 (HY000): Variable 'autocommit' is a SESSION variable and can't be used with SET GLOBAL

gbase> show errors;
+-------+------+-------------------------------------------------------------------------------+
| Level | Code | Message                                                                       |
+-------+------+-------------------------------------------------------------------------------+
| Error | 1228 | Variable 'autocommit' is a SESSION variable and can't be used with SET GLOBAL |
+-------+------+-------------------------------------------------------------------------------+
1 row in set (Elapsed: 00:00:00.00)

 8、SHOW STATUS （连接的状态信息）

语法树

SHOW [GLOBAL | SESSION] STATUS [LIKE 'pattern'];

GLOBAL参数可以获取所有连接集群的信息，SESSION 只能获得当前连接的信息。

默认值为 SESSION。LOCAL 和 SESSION 意义相同。

注意一些状态变量只有全局值，这样无论使用 GLOBAL 还是 SESSION， 都只能得到相同的值。

例子

gbase> SHOW STATUS LIKE 'Meminfo%';
+----------------------------------+-----------+
| Variable_name                    | Value     |
+----------------------------------+-----------+
| Meminfo_cache_access_times       | 0         |
| Meminfo_cache_hit_rate_%         | 0.000000  |
| Meminfo_cache_hit_times          | 0         |
| Meminfo_cache_miss_times         | 0         |
| Meminfo_cache_removed_list_size  | 0         |
| Meminfo_dc_heap_availble_size    | 536870912 |
| Meminfo_dc_heap_malloc_size      | 0         |
| Meminfo_dc_heap_total_size       | 536870912 |
| Meminfo_dc_heap_used_size        | 0         |
| Meminfo_large_heap_availble_size | 268435456 |
| Meminfo_large_heap_malloc_size   | 0         |
| Meminfo_large_heap_total_size    | 268435456 |
| Meminfo_large_heap_used_size     | 0         |
| Meminfo_temp_heap_availble_size  | 268430064 |
| Meminfo_temp_heap_malloc_size    | 0         |
| Meminfo_temp_heap_total_size     | 268435456 |
| Meminfo_temp_heap_used_size      | 5392      |
+----------------------------------+-----------+
17 rows in set (Elapsed: 00:00:00.00)

gbase> SHOW GLOBAL STATUS LIKE 'Meminfo%';
+----------------------------------+-----------+
| Variable_name                    | Value     |
+----------------------------------+-----------+
| Meminfo_cache_access_times       | 0         |
| Meminfo_cache_hit_rate_%         | 0.000000  |
| Meminfo_cache_hit_times          | 0         |
| Meminfo_cache_miss_times         | 0         |
| Meminfo_cache_removed_list_size  | 0         |
| Meminfo_dc_heap_availble_size    | 536870912 |
| Meminfo_dc_heap_malloc_size      | 0         |
| Meminfo_dc_heap_total_size       | 536870912 |
| Meminfo_dc_heap_used_size        | 0         |
| Meminfo_large_heap_availble_size | 268435456 |
| Meminfo_large_heap_malloc_size   | 0         |
| Meminfo_large_heap_total_size    | 268435456 |
| Meminfo_large_heap_used_size     | 0         |
| Meminfo_temp_heap_availble_size  | 268430064 |
| Meminfo_temp_heap_malloc_size    | 0         |
| Meminfo_temp_heap_total_size     | 268435456 |
| Meminfo_temp_heap_used_size      | 5392      |
+----------------------------------+-----------+
17 rows in set (Elapsed: 00:00:00.00)

 9、SHOW VARIABLES （参数信息）

语法树

SHOW [GLOBAL | SESSION] VARIABLES [LIKE 'pattern'];

GLOBAL参数可以获取所有集群连接的参数变量值，SESSION 只能获得当前连接的参数变量值。

例子

gbase> SHOW VARIABLES LIKE '%COMMIT%';
+-----------------------------------------------------------+----------+
| Variable_name                                             | Value    |
+-----------------------------------------------------------+----------+
| _t_gcluster_commit_revert_flag_test                       | 1        |
| autocommit                                                | ON       |
| gbase_tcmalloc_aggressive_decommit_threadhold_load_factor | 0.900000 |
| gbase_tcmalloc_balanced_decommit_threadhold_load_factor   | 0.600000 |
| gcluster_kafka_batch_commit_dml_count                     | 100000   |
| gcluster_kafka_parallel_commit                            | 1        |
+-----------------------------------------------------------+----------+
6 rows in set (Elapsed: 00:00:00.00)

 10、SHOW GRANTS （权限信息）

语法树

SHOW GRANTS FOR user_name;

例子

gbase> SHOW GRANTS FOR czg;
+----------------------------------------------------------------------------------------------------------------------------------+
| Grants for czg@%                                                                                                                 |
+----------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO 'czg'@'%' IDENTIFIED BY PASSWORD '*D75CC763C5551A420D28A227AC294FADE26A2FF2' WITH TASK_PRIORITY 2 |
| GRANT USAGE ON "czg".* TO 'czg'@'%' WITH GRANT OPTION                                                                            |
| GRANT SELECT ON "czg"."test" TO 'czg'@'%'                                                                                        |
+----------------------------------------------------------------------------------------------------------------------------------+
3 rows in set (Elapsed: 00:00:00.02)

 11、SHOW INDEX （索引信息）

语法树

SHOW INDEX FROM table_name [FROM database_name];

例子

gbase> show index from czg from czg;
Empty set (Elapsed: 00:00:00.00)

 12、SHOW ENGINES （存储引擎信息）

例子

gbase> show engines;
+-----------+---------+-----------------------------------------------------------+--------------+------+------------+
| Engine    | Support | Comment                                                   | Transactions | XA   | Savepoints |
+-----------+---------+-----------------------------------------------------------+--------------+------+------------+
| MRG_GSSYS | YES     | Collection of identical GsSYS tables                      | NO           | NO   | NO         |
| CSV       | YES     | CSV storage engine                                        | NO           | NO   | NO         |
| EXPRESS   | DEFAULT | Express storage engine                                    | YES          | YES  | NO         |
| GsSYS     | YES     | GsSYS engine                                              | NO           | NO   | NO         |
| MEMORY    | YES     | Hash based, stored in memory, useful for temporary tables | NO           | NO   | NO         |
+-----------+---------+-----------------------------------------------------------+--------------+------+------------+
5 rows in set (Elapsed: 00:00:00.32)

13、SHOW GCLUSTER NODES（调度节点信息）

例子

gbase> SHOW GCLUSTER NODES ;
+-----------+----------------+--------------+--------+-----------+
| Id        | ip             | name         | status | datastate |
+-----------+----------------+--------------+--------+-----------+
| 210675904 | 192.168.142.12 | coordinator1 | online |         0 |
+-----------+----------------+--------------+--------+-----------+
1 row in set (Elapsed: 00:00:00.00)

 14、SHOW  NODES（数据节点信息）

例子

gbase> SHOW NODES ;
+-----------+----------------+-------+--------------+----------------+--------+-----------+
| Id        | ip             | name  | primary part | duplicate part | status | datastate |
+-----------+----------------+-------+--------------+----------------+--------+-----------+
| 210675904 | 192.168.142.12 | node1 | n1           |                | online |         0 |
+-----------+----------------+-------+--------------+----------------+--------+-----------+
1 row in set (Elapsed: 00:00:00.00)