Oracle 拼接字符串

语法

1. 使用||拼接
2. 如果内容中有单引号，则可在该单引号前面再加一个单引号进行转义

例子

比如有一个业务是根据需要生成多条插入语句

select 'insert into des_account_des_role(des_account_id, roles_id) values(''' || id || ''', ''' || (select id from des_role where workflowgroup = 'cor.client') || ''');' from des_account
where id in (
	select des_account_id from des_account_des_role 
	where roles_id in (select id from des_role where workflowgroup in ('chm.client', 'mch.client', 'phy.client'))
);