Cannot use alias for dynamic column name in SELECT statement
Hi,
I want to retrieve values from several tables by using dynamic column & table name as below:
DATA: tbl_name(30) TYPE c VALUE '/bic/tbi_srcsys', " staticly initialized for this example
col_name(30) TYPE c VALUE '/bic/bi_srcsys'. " staticly initialized for this example
SELECT (col_name) INTO CORRESPONDING FIELDS OF TABLE it_values FROM (tbl_name).
The internal table "it_values" does not contain a field named "/bic/bi_srcsys", instead it has another generic field "value" so that the above code can be applied to other tables. I tried to use alias (AS) as below:
SELECT (col_name) AS value INTO CORRESPONDING FIELDS OF TABLE it_values FROM (tbl_name).
But this cannot work. I know that there are other ways to solve this problem, such as by using a single field in SELECT .. ENDSELECT and subsequently appending it to the work area and internal table as below:
SELECT (col_name) INTO (lv_value) FROM (tbl_name).
wa_value-value = lv_value.
APPEND wa_value TO it_values.
ENDSELECT.
Just wonder if there is any other more elegant workaround, because I might have several other fields instead of only one?
Thanks.
Regards,
Joon Meng
Hi Suhas,
thanks for the quick reply.
Sorry that I have not well described the structure of the internal table "it_values". This internal table contains several other fields (key, type, value, etc.).
I guess that the following code
SELECT (col_name) INTO TABLE it_values FROM (tbl_name).
works if the internal table only has one field (value) or the field "value" is in the first position, right?
In this case, I need to fill the "value" field of internal table it_values (ignore the other fields like type, key) with values retrieved from (col_name) of the DDIC table.
Looking forward to your reply.
BR,
Joon Meng
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Dynamic column name with SELECT INTO
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I can determine from the timecard and employee ID which field to look at, but I'm getting hung up with the syntax needed to construct and execute the statement inside the PL/SQL block. I need to RETURN the pay I extract using the function, and I can create the correct SQL statement, but the EXECUTE IMMEDIATE won't accept the SELECT INTO syntax.
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e_typ VARCHAR2(4);
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sql_and2 VARCHAR2(200);
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select fn_get_payrate(21555, 30162, 15) from dual
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In Software Engineering we have a principle called cohesion that says a model should do one and only one task, have one and only one entry point, and one and only one exit point.
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