test_informix.pgc

来自「postgresql8.3.4源码,开源数据库」· PGC 代码 · 共 95 行

#include "sqltypes.h"
#include <stdlib.h>
#
$include ../regression;
$define NUMBER 12;

static void openit(void);
static void dosqlprint(void) {
	printf("doSQLprint: Error: %s\n", sqlca.sqlerrm.sqlerrmc);
}

int main(void)
{
	$int i = 14; 
	$decimal j, m, n;

	ECPGdebug(1, stderr);
	$whenever sqlerror do dosqlprint();

	$connect to REGRESSDB1;
	if (sqlca.sqlcode != 0) exit(1);

	$create table test(i int primary key, j int);

	/* this INSERT works */
	rsetnull(CDECIMALTYPE, (char *)&j);
	$insert into test (i, j) values (7, :j);
	$commit;

	/* this INSERT should fail because i is a unique column */
	$insert into test (i, j) values (7, NUMBER);
	printf("INSERT: %ld=%s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc);
	if (sqlca.sqlcode != 0) $rollback;

	$insert into test (i, j) values (:i, 1);
	$commit;

	/* this will fail (more than one row in subquery) */
	$select i from test where j=(select j from test);
	$rollback;

	/* this however should be ok */
	$select i from test where j=(select j from test order by i limit 1);
	printf("SELECT: %ld=%s\n", sqlca.sqlcode, sqlca.sqlerrm.sqlerrmc);
	if (sqlca.sqlcode != 0) $rollback;

	$declare c cursor for select * from test where i <= :i;
	openit();

	deccvint(0, &j);

	while (1)
	{
		$fetch forward c into :i, :j;
		if (sqlca.sqlcode == 100) break;
		else if (sqlca.sqlcode != 0) printf ("Error: %ld\n", sqlca.sqlcode);

		if (risnull(CDECIMALTYPE, (char *)&j))
			printf("%d NULL\n", i);
		else
		{
			int a;

			dectoint(&j, &a);
			printf("%d %d\n", i, a);
		}
	}

	deccvint(7, &j);
	deccvint(14, &m);
	decadd(&j, &m, &n);
	$delete from test where i= :n::decimal;
	printf("DELETE: %ld\n", sqlca.sqlcode);

	$select 1 from test where i=14;
	printf("Exists: %ld\n", sqlca.sqlcode);

	$select 1 from test where i=147;
	printf("Does not exist: %ld\n", sqlca.sqlcode);

	$commit;
	$drop table test;
	$commit;

	$close database;

	return 0;
}

static void openit(void)
{
	$open c;
}