Thunderstone Support Forums

I don't appear to be having any luck using the n_setttexisparam API followed by n_texis to execute the query.
This code fragment:
if (!n_settexisparam(se,1,"KR",(int *)NULL,SQL_C_CHAR,SQL_LONGVARCHAR)) {
printf("setparam failed\n");
} else if(!n_texis(se, "select id from patent where length(pabstract)=?;", sql)) {
FREE_CONFIG();
printf("%s\n", errorString);
}

Produces this result:
SQL: Needed parameters not supplied in the function: execntexis

While initializing the database for the first n_texis call the parameters are getting removed. We will work on getting that resolved, but the simplest workaround would be to run a simple query first, e.g.

n_texis(se, "set likeprows=100;");

before calling n_settexisparam.

Would I encounter the same problem using n_preptx and n_exectx?

No you won't. You can use n_settx and n_runtx to get the same functionality as n_texis, but without the problem you were seeing with parameters.

I notice in this example the programmer was able to get an error text message using "errorString" which appears to be something he defined in his program. How do I get the error text from an unsuccessful call to n_texis?

API errors are reported through the putmsg() function. acoulson0 is probably setting a global within a customized putmsg() function. See putmsg replacement in the manual

http://thunderstone.master.com/texis/ma ... eplacement