7
1.
ALTER TABLE demo CHARACTER SET = utf8, COMMENT = '2222';
报错:syntax error, expect COLLATE, actual COMMENT, pos 47, line 1, column 40, token COMMENT
2.
ALTER TABLE demo
ADD COLUMN a tinyint(3) UNSIGNED DEFAULT '0' NOT NULL,
DROP COLUMN b,
MODIFY COLUMN c bigint(19) NOT NULL COMMENT 'cccc';
报错:syntax error, error in :'DIFY COLUMN c bigint(19)', expect COLUMN, actual COLUMN pos 131, line 4, column 12, token COLUMN
请问有人遇见过类似的问题么