Question

您好我有两个相继执行的select语句。编程语言是ABAP。是否可以合并这两个select语句以减少select语句的数量？

SELECT * FROM (me->db_table)
UP TO mynumber ROWS
INTO CORRESPONDING FIELDS OF TABLE mytable
WHERE x =  y
AND n =  m
ORDER BY (x).

SELECT * FROM (me->db_table)
UP TO mynumber ROWS
APPENDING CORRESPONDING FIELDS OF TABLE mytable
WHERE x  =  y
AND n =  m
ORDER BY (x).

提前致谢

Answer 1

这两个语句之间的x或me-＆gt; db_table是否有任何变化？如果没有，只需执行

SELECT * FROM (me->db_table)
UP TO mynumber ROWS
INTO CORRESPONDING FIELDS OF TABLE mytable
WHERE x =  y
AND n =  m
ORDER BY (x).

append lines of mytable to mytable.

我不确定最后一个语句是否会发出语法错误，如果是，请尝试

SELECT * FROM (me->db_table)
UP TO mynumber ROWS
INTO CORRESPONDING FIELDS OF TABLE tmp
WHERE x =  y
AND n =  m
ORDER BY (x).

append lines of tmp to mytable.
append lines of tmp to mytable.

其中tmp应与mytable具有相同的类型。关键是，两个选项都是相同的，因此结果是，你在mytable中有两次相同的数据。

使用appending子句合并两个select语句

1 个答案: