embedded-sql

embedded sql in C

I've been attempting to write embedded SQL statements for DB2 that ultimately gets compiled in C. I couldn't find a tutorial or manual on the embedded SQL syntax for C for reference. One case I would like to do is to insert data into a table. I know most embedded sql statements need the initalizer EXEC SQL, but thats the extent of my k...

Insert array with PostgreSQL ECPG

I am using ECPG with PostgreSQL 8.4. I have a function which takes a struct containing pointers to a couple of dynamically allocated, "null"-terminated arrays of integers (I have defined null in this case to be -1, as there is no need for negative values, as in #define INT_ARR_NULL -1 struct foobar { int * foo; int * bar; }; v...

Decode() function query in oracle

Can we use a select query in embedded sql (pro C) as the first argument in Decode() function. ...

start learning Proc(embedded sql with C)

Hi, I am basically working on unix and c programming. i want to start learning Pro*c on unix. Is there any good online tutorial which will help me start writing simple programs in pro*c and compiling those Pro*c files.? Thanks in advance for your help. ...

Is using Natural Join or Implicit column names not a good practice when writing SQL in a programming language?

When we use Natural Join, we are joining the tables when both table have the same column names. But what if we write it in PHP and then the DBA add some more fields to both tables, then the Natural Join can break? The same goes for Insert, if we do a insert into gifts values (NULL, "chocolate", "choco.jpg", now()); then it will bre...

How to get rid of label used but not defined

I'm trying to print the rows of a table in embedded sql. I have this code where publication is the table and pubid is the attribute. I tried this: EXEC SQL DECLARE C1 CURSOR FOR SELECT pubid FROM publication; EXEC SQL OPEN C1; EXEC SQL WHENEVER NOT FOUND GOTO close_c1; for(;;) { EXEC SQL FETCH C1 INTO :pubid; ...