test2.pgc

来自「postgresql8.3.4源码,开源数据库」· PGC 代码 · 共 47 行

/*
 * this file tests multiple connections to databases and switches
 * between them.
 */

#include <stdlib.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>

exec sql include ../regression;

int
main(void)
{
exec sql begin declare section;
	char id[200];
	char res[200];
exec sql end declare section;

	ECPGdebug(1, stderr);

	strcpy(id, "first");
	exec sql connect to connectdb as :id;
	exec sql connect to REGRESSDB1 as second;

	/* this selects from "second" which was opened last */
	exec sql select current_database() into :res;
	exec sql at first select current_database() into :res;
	exec sql at second select current_database() into :res;

	exec sql set connection first;
	exec sql select current_database() into :res;

	/* this will disconnect from "first" */
	exec sql disconnect;
	exec sql select current_database() into :res;

	/* error here since "first" is already disconnected */
	exec sql disconnect :id;

	/* disconnect from "second" */
	exec sql disconnect;

	return (0);
}