134 lines
4.1 KiB
Markdown
134 lines
4.1 KiB
Markdown
通过 obclient 探索 OceanBase MySQL 租户
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======================================================
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在 obclient 命令行环境里，可以通过一些命令或者 SQL 查看数据库对象或者表属性和数据。
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示例
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-----------
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* 通过 obclient 查看 MySQL 租户的数据库对象。
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```javascript
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#obclient -h192.168.1.101 -utpcc@obmysql#obdemo -P2883 -p123456 -A tpccdb
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obclient> show tables;
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+------------------+
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| Tables_in_tpccdb |
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+------------------+
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| cust |
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| dist |
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| hist |
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| item |
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| load_hist |
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| load_proc |
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| nord |
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| ordl |
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| ordr |
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| stock_item |
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| stok |
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| ware |
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+------------------+
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12 rows in set (0.01 sec)
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```
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* 通过 obclient 查看 MySQL 租户的表属性
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```javascript
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obclient> desc ordl;
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+----------------+--------------+------+-----+---------+-------+
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| Field | Type | Null | Key | Default | Extra |
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+----------------+--------------+------+-----+---------+-------+
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| ol_w_id | int(11) | NO | PRI | NULL | |
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| ol_d_id | int(11) | NO | PRI | NULL | |
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| ol_o_id | int(11) | NO | PRI | NULL | |
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| ol_number | int(11) | NO | PRI | NULL | |
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| ol_delivery_d | date | YES | | NULL | |
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| ol_amount | decimal(6,2) | YES | | NULL | |
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| ol_i_id | int(11) | YES | | NULL | |
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| ol_supply_w_id | int(11) | YES | | NULL | |
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| ol_quantity | int(11) | YES | | NULL | |
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| ol_dist_info | char(24) | YES | | NULL | |
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+----------------+--------------+------+-----+---------+-------+
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10 rows in set (0.01 sec)
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obclient> show create table ordl\G
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*************************** 1. row ***************************
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Table: ordl
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Create Table: CREATE TABLE `ordl` (
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`ol_w_id` int(11) NOT NULL,
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`ol_d_id` int(11) NOT NULL,
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`ol_o_id` int(11) NOT NULL,
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`ol_number` int(11) NOT NULL,
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`ol_delivery_d` date DEFAULT NULL,
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`ol_amount` decimal(6,2) DEFAULT NULL,
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`ol_i_id` int(11) DEFAULT NULL,
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`ol_supply_w_id` int(11) DEFAULT NULL,
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`ol_quantity` int(11) DEFAULT NULL,
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`ol_dist_info` char(24) DEFAULT NULL,
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PRIMARY KEY (`ol_w_id`, `ol_d_id`, `ol_o_id`, `ol_number`)
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) DEFAULT CHARSET = utf8mb4 ROW_FORMAT = DYNAMIC COMPRESSION = 'zstd_1.0' REPLICA_NUM = 1 BLOCK_SIZE = 16384 USE_BLOOM_FILTER = FALSE TABLET_SIZE = 134217728 PCTFREE = 10 TABLEGROUP = 'tpcc_group'
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partition by hash(ol_w_id) partitions 6
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1 row in set (0.02 sec)
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```
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* 通过 obclient 查看 MySQL 租户的表数据
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```javascript
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obclient> select * from ware;
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+------+---------+--------+------------+---------------------+----------------------+--------------+---------+-----------+
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| w_id | w_ytd | w_tax | w_name | w_street_1 | w_street_2 | w_city | w_state | w_zip |
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+------+---------+--------+------------+---------------------+----------------------+--------------+---------+-----------+
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| 1 | 1200.00 | 0.1868 | n1P4zYo8OH | jTNkXKWXOdh | lf9QXTXXGoF04IZBkCP7 | srRq15uvxe5 | GQ | 506811111 |
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| 2 | 1200.00 | 0.0862 | L6xwRsbDk | xEdT1jkENtbLwoI1Zb0 | NT0j4RCQ4OqrS | vlwzndw2FPrO | XR | 063311111 |
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+------+---------+--------+------------+---------------------+----------------------+--------------+---------+-----------+
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2 rows in set (0.01 sec)
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```
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也可以使用参数'\\G'结尾按列展示每行数据
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```javascript
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obclient> select * from ware\G
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*************************** 1. row ***************************
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w_id: 1
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w_ytd: 1200.00
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w_tax: 0.1868
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w_name: n1P4zYo8OH
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w_street_1: jTNkXKWXOdh
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w_street_2: lf9QXTXXGoF04IZBkCP7
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w_city: srRq15uvxe5
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w_state: GQ
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w_zip: 506811111
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*************************** 2. row ***************************
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w_id: 2
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w_ytd: 1200.00
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w_tax: 0.0862
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w_name: L6xwRsbDk
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w_street_1: xEdT1jkENtbLwoI1Zb0
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w_street_2: NT0j4RCQ4OqrS
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w_city: vlwzndw2FPrO
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w_state: XR
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w_zip: 063311111
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2 rows in set (0.01 sec)
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obclient>
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```
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