如果联接键是一个复合键，那么必须使用PRIOR运算符为每个键所在的列加上前缀。

If the join key is a composite key, each key column must be prefixed with the PRIOR operator.

youdao

为了合并扫描联接正确地执行，按照联接列的顺序预计有两个输入。

For the merge scan join to perform properly, both inputs are expected to be in the order of join columns.

youdao

对于客户类型来说，在JLT_T077D上使用其相应的支持数据来联接来自E2KNA1M 005表的列ktokd，使用KTOKD作为联接键。

For customer type, join the column KTOKD from the E2KNA1M005 table with its corresponding supporting data in JLT_T077D, using KTOKD as the join key.

youdao