mysql modify default value

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showing results for - "mysql modify default value"
Selyan
18 Nov 2017
1ALTER DATABASE databasename CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
2ALTER TABLE tablename CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
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Lucia
15 May 2018
1ALTER TABLE tbl_name ALTER column_name SET DEFAULT new_value;
Tommaso
02 Jun 2016
1mysql> SHOW VARIABLES LIKE 'char%'; SHOW VARIABLES LIKE 'collation%';
2+--------------------------+----------------------------+
3| Variable_name            | Value                      |
4+--------------------------+----------------------------+
5| character_set_client     | utf8mb4                    |
6| character_set_connection | utf8mb4                    |
7| character_set_database   | utf8mb4                    |
8| character_set_filesystem | binary                     |
9| character_set_results    | utf8mb4                    |
10| character_set_server     | utf8mb4                    |
11| character_set_system     | utf8                       |
12| character_sets_dir       | /usr/share/mysql/charsets/ |
13+--------------------------+----------------------------+
148 rows in set (0.00 sec)
15
16+----------------------+--------------------+
17| Variable_name        | Value              |
18+----------------------+--------------------+
19| collation_connection | utf8mb4_general_ci |
20| collation_database   | utf8mb4_unicode_ci |
21| collation_server     | utf8mb4_unicode_ci |
22+----------------------+--------------------+
233 rows in set (0.00 sec)
source
Christopher
22 Jan 2018
1CREATE TABLE table_name(
2   column_name data_type,
3   Column_name data_type DEFAULT ‘value’
4);
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