up to now I have had no problem with outputting substitution variables. But after working in automation designer, when I run a script, those variables are surrounded by the '%' symbol, and my query no longer functions:
(SELECT UPPER('&unit_code') unit_code
, UPPER('&channel_d_t') channel --d/t
FROM dual);
substitutions: 'nasm' and 'd'
result set: '%NASM%' and '%D%'
what did I do to make that happen, and how can I revert?