demo1.ec

来自「ESQL/C Informix C~{7CNJJ>76~}」· EC 代码 · 共 42 行

#include <stdio.h>

EXEC SQL define FNAME_LEN	15;
EXEC SQL define LNAME_LEN	15;

main()
{
EXEC SQL BEGIN DECLARE SECTION;
    char fname[ FNAME_LEN + 1 ];
    char lname[ LNAME_LEN + 1 ];
EXEC SQL END DECLARE SECTION;

    printf( "DEMO1 Sample ESQL Program running.\n\n");
    EXEC SQL WHENEVER ERROR STOP;
    EXEC SQL connect to 'stores_demo';

    EXEC SQL declare democursor cursor for
	select fname, lname
	   into :fname, :lname
	   from customer
	   where lname < "C";

    EXEC SQL open democursor;
    for (;;)
	{
	EXEC SQL fetch democursor;
	if (strncmp(SQLSTATE, "00", 2) != 0)
	    break;

	printf("%s %s\n",fname, lname);
	}

    if (strncmp(SQLSTATE, "02", 2) != 0)
        printf("SQLSTATE after fetch is %s\n", SQLSTATE);

    EXEC SQL close democursor;
    EXEC SQL free democursor;

    EXEC SQL disconnect current;
    printf("\nDEMO1 Sample Program over.\n\n");
}