Question

我正在创建一个删除表行重复项的过程。

代码工作正常，我想将代码转换为过程。我找不到设置[ Schema] 和 [Table] 作为输入参数的方法。

Create procedure DUPL_DELETE (in inp1 nvarchar(100), in inp2 nvarchar(200))
as 
begin

-- Select the distinct rows into a New temporary Table
create local temporary table #Mytemp
LIKE "SCHEMA"."TABLE";
-- LIKE :inp2.:inp1        Desired code to be(does not work)
SELECT DISTINCT * 
FROM "SCHEMA"."TABLE"
INTO "SCHEMA".#Mytemp;

-- Delete the rows from table
DELETE FROM "SCHEMA"."TABLE";

-- Insert disctinct data back in to the Table and drop the temporary table
INSERT INTO "SCHEMA"."TABLE" SELECT * FROM "SCHEMA".#Mytemp;
DROP TABLE "SCHEMA".#Mytemp;

end;

请大家帮助

Answer 1

您可以尝试使用以下示例命令更改架构：

set schema OTHERSCHEMA;

但是对于表名，您需要使用{p>

execute immediate :sql;

Answer 2

您可以这样：

CREATE PROCEDURE OriginalSchema.procDynamicSchema( 
     IN schemaId NVARCHAR(250)
     )
     LANGUAGE SQLSCRIPT 
     SQL SECURITY INVOKER 
     READS SQL DATA AS

BEGIN
/***************************** 
  Write your procedure logic 
*****************************/
 EXECUTE IMMEDIATE 
 'SELECT  
    "Id",
    "UUID",
    "IdpId",
    "Email",
    "firstName",
    "lastname"
FROM ' || :schemaId || '."Users"' ;  
END;

然后称呼它：

CALL "OriginalSchema"."procDynamicSchema"(SCHEMAID => 'XYZ')

p.s：我认为您不能动态地传递OriginalSchema名称，因为要创建一个过程，您至少必须具有一个实际上要在第一手创建过程的方案。

SAP HANA：是否可以将模式和表名定义为过程的输入参数？

2 个答案: