在 PostgreSQL 中分配变量的语句中连接字符串
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Concatenate string in statement that assigns a variable in PostgreSQL
提问by compyutech
I am trying to convert SQL Server procedure to PostgreSQL.
我正在尝试将 SQL Server 过程转换为 PostgreSQL。
In the SQL Server procedure There are statements like below
在 SQL Server 过程中有如下语句
SET @val = '(' + @someval + ')'
SET @val = '(' + @someval + ')'
So in postgresql I wrote as below
所以在postgresql中我写如下
SET val = '(' || someval || ')';
SET val = '(' || someval || ')';
But the above statement giving error at ||
但是上面的语句在 || 处给出了错误
Any body can please tell me where am I making mistake
任何机构都可以告诉我我哪里出错了
回答by Roman Pekar
AFAIK, SET statement in PostgreSQL used for changing configutation parameters, for variable assignment just use :=
:
AFAIK,PostgreSQL 中的 SET 语句用于更改配置参数,变量赋值只需使用:=
:
val := '(' || someval || ')';