Question

所以让我在程序中有3个合并语句：

CREATE PROCEDURE SP_Employee(OUT num_rows BIGINT)
BEGIN
    MERGE INTO t1
         USING t2
    ...;
    MERGE INTO a1
         USING b2
    ...;
    MERGE INTO c1
         USING d2
    ...;
END;

如何在程序中获得受影响的行数？我知道ACTIVE_COUNT，但我可以使用它吗？ num_rows = ACTIVE_COUNT是否有效，或者需要多次将其添加到变量并最初设置为0？

Answer 1

您可以在每次合并后插入下面的部分。

Merge INTO t1
      USING t2
.....;

SET lv_activity_count = activity_count;


SET lv_message = ' Number of rows merged in table1 is  '|| lv_activity_count ;
..

请初始化并声明变量。

Answer 2

您需要将变量初始化为零，然后在每次执行DML语句后添加计数（使用ACTIVITY_COUNT或GET DIAGNOSTICS ROW_COUNT）：

CREATE PROCEDURE SP_Employee(OUT num_rows BIGINT)
BEGIN
   DECLARE ac BIGINT DEFAULT 0;

    MERGE INTO t1
         USING t2
    ...;
   SET ac = ac + ACTIVITY_COUNT;

    MERGE INTO a1
         USING b2
    ...;
   SET ac = ac + ACTIVITY_COUNT;

    MERGE INTO c1
         USING d2
    ...;
   SET ac = ac + ACTIVITY_COUNT;

   SET num_rows = ac;

END;

如何获取teradata中过程中最后几个sql语句影响的行数？

2 个答案: