mysql查询字段排序规则、数据库编码、表编码，修改排序规则

查询字段排序规则、数据库编码、表编码

SELECT 
TABLE_CATALOG, 
TABLE_SCHEMA, 
TABLE_NAME,COLUMN_NAME, 
COLLATION_NAME
FROM INFORMATION_SCHEMA.COLUMNS

 

表字段修复

#改变字段数据 字符集、排序规则
SELECTTABLE_SCHEMA '数据库',TABLE_NAME '表',COLUMN_NAME '字段',CHARACTER_SET_NAME '原字符集',COLLATION_NAME '原排序规则',CONCAT( 'ALTER TABLE ', TABLE_SCHEMA, '.', TABLE_NAME, ' MODIFY COLUMN ', COLUMN_NAME, ' ', COLUMN_TYPE, ' CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;' ) '修正SQL' 
FROMinformation_schema.`COLUMNS` 
WHERETABLE_NAME = 'ud_dm_org_cas_stat'  and COLLATION_NAME RLIKE 'utf8_general_ci';

表修复

#改变表
SELECTTABLE_SCHEMA '数据库',TABLE_NAME '表',TABLE_COLLATION '原排序规则',CONCAT( 'ALTER TABLE ', TABLE_SCHEMA, '.', TABLE_NAME, ' COLLATE=utf8mb4_general_ci;' ) '修正SQL' 
FROMinformation_schema.`TABLES` 
WHERETABLE_NAME = 'ud_yqyc_ryb' 

数据库修复

#修改数据库
SELECTSCHEMA_NAME '数据库',DEFAULT_CHARACTER_SET_NAME '原字符集',DEFAULT_COLLATION_NAME '原排序规则',CONCAT( 'ALTER DATABASE ', SCHEMA_NAME, ' CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;' ) '修正SQL' 
FROMinformation_schema.`SCHEMATA` 
WHEREDEFAULT_CHARACTER_SET_NAME RLIKE 'utf8';;ALTER DATABASE 库名 CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci;