num_test.pgc

来自「postgresql8.3.4源码,开源数据库」· PGC 代码 · 共 96 行

#include <stdio.h>
#include <stdlib.h>
#include <pgtypes_numeric.h>
#include <decimal.h>

exec sql include ../regression;


/*

NOTE: This file has a different expect file for regression tests on MinGW32

*/


int
main(void)
{
	char *text="error\n";
	numeric *value1, *value2, *res;
	exec sql begin declare section;
		numeric(14,7) *des;
		/* = {0, 0, 0, 0, 0, NULL, NULL} ; */
	exec sql end declare section;
	double d;
	long l1, l2;
	int i;

	ECPGdebug(1, stderr);
	exec sql whenever sqlerror do sqlprint();

	exec sql connect to REGRESSDB1;

	exec sql set autocommit = off;
	exec sql create table test (text char(5), num numeric(14,7));

	value1 = PGTYPESnumeric_new();
	PGTYPESnumeric_from_int(1407, value1);
	text = PGTYPESnumeric_to_asc(value1, -1);
	printf("from int = %s\n", text);
	free(text);
	PGTYPESnumeric_free(value1);

	value1 = PGTYPESnumeric_from_asc("2369.7", NULL);
	value2 = PGTYPESnumeric_from_asc("10.0", NULL);
	res = PGTYPESnumeric_new();
	PGTYPESnumeric_add(value1, value2, res);
	text = PGTYPESnumeric_to_asc(res, -1);
	printf("add = %s\n", text);
	free(text);

	PGTYPESnumeric_sub(res, value2, res);
	text = PGTYPESnumeric_to_asc(res, -1);
	printf("sub = %s\n", text);
	free(text);
	PGTYPESnumeric_free(value2);

	des = PGTYPESnumeric_new();
	PGTYPESnumeric_copy(res, des);
	exec sql insert into test (text, num) values ('test', :des);

	value2 = PGTYPESnumeric_from_asc("2369.7", NULL);
	PGTYPESnumeric_mul(value1, value2, res);
	PGTYPESnumeric_free(value2);

	exec sql select num into :des from test where text = 'test';

	PGTYPESnumeric_mul(res, des, res);
	text = PGTYPESnumeric_to_asc(res, -1);
	printf("mul = %s\n", text);
	free(text);
	PGTYPESnumeric_free(des);

	value2 = PGTYPESnumeric_from_asc("10000", NULL);
	PGTYPESnumeric_div(res, value2, res);
	text = PGTYPESnumeric_to_asc(res, -1);
	PGTYPESnumeric_to_double(res, &d);
	printf("div = %s %e\n", text, d);

	value1 = PGTYPESnumeric_from_asc("2E7", NULL);
	value2 = PGTYPESnumeric_from_asc("14", NULL);
	i = PGTYPESnumeric_to_long(value1, &l1) | PGTYPESnumeric_to_long(value2, &l2);
	printf("to long(%d) = %ld %ld\n", i, l1, l2);

	free(text);
	PGTYPESnumeric_free(value1);
	PGTYPESnumeric_free(value2);
	PGTYPESnumeric_free(res);

	exec sql rollback;
	exec sql disconnect;

	return (0);
}