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Comments in Embedded SQL files???

Comments in Embedded SQL files???

Comments in Embedded SQL files???

does anybody know how I can insert comments into Embedded SQL files? Is it possible at all?

kind regards boaconstrictor  

RE: Comments in Embedded SQL files???

I'm not quite sure why a comment in embedded SQL would be different from a comment in regular SQL:

(example SQL block:)
CREATE SEQUENCE "id" start 1 increment 1 maxvalue 2147483647 minvalue 1  cache 1 ;

-- this is a comment

SELECT * FROM table_1;

-- here are a few comments
-- comment1
-- comment2

SELECT * FROM table_1
-- you can even have comments in the
-- middle of an SQL statement, as long
-- as you put them on their own lines
WHERE id > 12;

Or do you mean the SQL COMMENT syntax, where you can create a comment on a table, view, whatever, to be stored for later use? This should also work just fine in embedded SQL:



Big Brother: "War is Peace" -- Big Business: "Trust is Suspicion"

RE: Comments in Embedded SQL files???


If you are embedding it in the C language, you could also used the '/* */'  comments...


EXEC SQL SELECT fname,lname /* SELECT .... */
         INTO :hv_Fname,:hv_Lname
     WHERE idno=:hv_IDNo;

Good Luck!

RE: Comments in Embedded SQL files???

Thanks for your answers!
I found out now what was wrong. The token "--" can be used in .pgc-files, but if you precompile this to a c-program, it produces "--" tokens as well in the c-file. But in C this is an unknown token. So if you use this token, you need to swap them into "/*" tokens.

Hence it is strongly recommended to use the standard C token "/*" and "*/" for comments inside the .pgc files.

But there is still a considerable issue:
The new C99 standard supports also the token "//" to make comments for one line. But the ECPG program doesn't recognise it as a comment token! This could be a pitfall!

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