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描述

該語句用來設(shè)置當(dāng)前連接的數(shù)據(jù)庫的字符集編碼。

格式

SET NAMES 'charset_name' [COLLATE 'collation_name']

參數(shù)解釋

參數(shù)	描述
charset_name	指定字符集
collation_name	指定字符集排序規(guī)則。如未指定，則使用字符集默認(rèn)排序規(guī)則。

說明 
該語句將三個會話系統(tǒng)變量?
 character_set_client ?， ?
character_set_connection? 和 ?
character_set_results? 設(shè)置為給定的字符集。將 ?
character_set_connection? 設(shè)置為 ?
charset_name ?，將 ?
collation_connection?設(shè)置為 ?
charset_name? 的默認(rèn)排序規(guī)則。

示例

• 設(shè)置數(shù)據(jù)庫的字符集和排序規(guī)則。

OceanBase(admin@test)>SET NAMES 'utf8mb4' COLLATE 'utf8mb4_general_ci';
Query OK, 0 rows affected (0.00 sec)

OceanBase(admin@test)>show variables like 'character_set_c%';
+--------------------------+---------+
| Variable_name            | Value   |
+--------------------------+---------+
| character_set_client     | utf8mb4 |
| character_set_connection | utf8mb4 |
+--------------------------+---------+
2 rows in set (0.01 sec)

OceanBase(admin@test)>show variables like 'collation_connection';
+----------------------+--------------------+
| Variable_name        | Value              |
+----------------------+--------------------+
| collation_connection | utf8mb4_general_ci |
+----------------------+--------------------+
1 row in set (0.05 sec)


OceanBase(admin@test)>SET NAMES 'gbk';
Query OK, 0 rows affected (0.02 sec)

OceanBase(admin@test)>show variables like 'character_set_c%';
+--------------------------+-------+
| Variable_name            | Value |
+--------------------------+-------+
| character_set_client     | gbk   |
| character_set_connection | gbk   |
+--------------------------+-------+
2 rows in set (0.01 sec)


OceanBase(admin@test)>show variables like 'collation_connection';
+----------------------+----------------+
| Variable_name        | Value          |
+----------------------+----------------+
| collation_connection | gbk_chinese_ci |
+----------------------+----------------+
1 row in set (0.01 sec)

文章標(biāo)題：創(chuàng)新互聯(lián)OceanBase教程：OceanBaseSETNAMES
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