use utf8mb4 instead of utf8 in TestCharset#1228
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From MySQL 8.0.24, `SELECT @@character_set_connection` reports utf8mb3 or utf8mb4 instead of utf8. Because utf8 is currently an alias for utf8mb3, however at some point utf8 is expected to become a reference to utf8mb4. > ref. https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-24.html#mysqld-8-0-24-bug > Important Note: When a utf8mb3 collation was specified in a CREATE TABLE statement, SHOW CREATE TABLE, DEFAULT CHARSET, > the values of system variables containing character set names, > and the binary log all subsequently displayed the character set as utf8 which is becoming a synonym for utf8mb4. > Now in such cases, utf8mb3 is shown instead, and CREATE TABLE raises the warning 'collation_name' is a collation of the deprecated character set UTF8MB3. > Please consider using UTF8MB4 with an appropriate collation instead. (Bug #27225287, Bug #32085357, Bug #32122844) > > References: See also: Bug #30624990. The document says that we should use utf8mb4 instead of utf8, so we should follow it.
methane approved these changes Jul 12, 2021
zihengCat added a commit to zihengCat/mysql that referenced this pull request Jul 12, 2021
Fix error returns use utf8mb4 instead of utf8 in TestCharset (go-sql-driver#1228) From MySQL 8.0.24, `SELECT @@character_set_connection` reports utf8mb3 or utf8mb4 instead of utf8. Because utf8 is currently an alias for utf8mb3, however at some point utf8 is expected to become a reference to utf8mb4. > ref. https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-24.html#mysqld-8-0-24-bug > Important Note: When a utf8mb3 collation was specified in a CREATE TABLE statement, SHOW CREATE TABLE, DEFAULT CHARSET, > the values of system variables containing character set names, > and the binary log all subsequently displayed the character set as utf8 which is becoming a synonym for utf8mb4. > Now in such cases, utf8mb3 is shown instead, and CREATE TABLE raises the warning 'collation_name' is a collation of the deprecated character set UTF8MB3. > Please consider using UTF8MB4 with an appropriate collation instead. (Bug #27225287, Bug #32085357, Bug #32122844) > > References: See also: Bug #30624990. The document says that we should use utf8mb4 instead of utf8, so we should follow it.
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Description
This fixes a broken test of TestCharset.
https://github.com/go-sql-driver/mysql/runs/2947684909?check_suite_focus=true#step:6:161
From MySQL 8.0.24,
SELECT @@character_set_connectionreports utf8mb3 or utf8mb4 instead of utf8.Because utf8 is currently an alias for utf8mb3, however at some point utf8 is expected to become a reference to utf8mb4.
The document says that we should use utf8mb4 instead of utf8, so we should follow it.
Checklist