MySQL全局遍历替换特征字符串的实现方法

replace .letssing.net/ -> .kaixinvv.com/  where column like (%http://%.letssing.net/% or %https://%.letssing.net/%)

$cat find_db_table_column.sh
mysql -uroot -p123456 -h10.10.10.1 -P3306 -e "
select concat('select ','''',t1.TABLE_SCHEMA, '''',', ','''',t1.TABLE_NAME, '''',', ', '''',t1.COLUMN_NAME,'''',' 
                 from ', t1.TABLE_SCHEMA,'.',t1.TABLE_NAME,' where \`',t1.COLUMN_NAME,'\` like \'%://%.letssing.net/%\' limit 1;') 
  from information_schema.columns t1, information_schema.tables t2 
 where t1.DATA_TYPE in ('varchar','longtext','text','mediumtext','char') 
   and t1.TABLE_SCHEMA not in ('information_schema','mysql','performance_schema','sys') 
   and (t2.data_length+t2.index_length)/1024/1024/1024 < 1 
   and t2.table_name not like '%log%' and t2.table_name not like '%idempotent%' 
   and t1.table_schema= t2.table_schema 
   and t1.table_name= t2.table_name 
 order by t1.TABLE_SCHEMA, t1.TABLE_name, t1.column_name;" -N > query.sql

mysql -uroot -p123456 -h10.10.10.1 -P3306 -N < query.sql > result.txt

mysql -uwxy -p -h127.0.0.1 -p123456 -P3306 --local-infile -Ddomain -e "
truncate table t1;
load data local infile '/home/mysql/domain_name/rule/result.txt' into table t1(dbname,tablename,columnname);"

mysql -uwxy -p -h127.0.0.1 -p123456 -P3306 -Ddomain -e "
select concat('select ',instance,',''',dbname,''',''',tablename,''',\`',columnname,'\` from ',dbname,'.',tablename, ' where \`',columnname,'\` like \'%://%.letssing.net/%\' limit 5;') from t1 order by instance,dbname,tablename;" -N > query_domain.sql

mysql -uroot -p123456 -h10.10.10.1 -P3306 < query_domain.sql > result_domain.txt

mysql -uwxy -p -h127.0.0.1 -p123456 -P3306 --local-infile -Ddomain -e "
select concat('update ',dbname,'.',tablename,' set \`',columnname,'\` = ','replace(\`',columnname,'\`,','\'.letssing.net/\',\'.kaixinvv.com/\')',
' where \`',columnname,'\` like \'%http://%.letssing.net/%\' or \`', columnname,'\` like \'%https://%.letssing.net/%\';')
  from t1 where instance = 1 order by instance,dbname,tablename;" -N > update.sql

mysql -uroot -p123456 -h10.10.10.1 -P3306 < update.sql