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#include <locale.h>
#include <string.h>
#include <stdlib.h>
EXEC SQL WHENEVER SQLERROR SQLPRINT;
EXEC SQL INCLUDE sqlca;
EXEC SQL INCLUDE ../regression;
#define ARRAY_SIZE 2
void execute_test(void);
void commitTable(void);
void reset(void);
void printResult(char *tc_name, int loop);
EXEC SQL BEGIN DECLARE SECTION;
int f1[ARRAY_SIZE];
int f2[ARRAY_SIZE];
char f3[ARRAY_SIZE][20];
EXEC SQL END DECLARE SECTION;
int main(void)
{
setlocale(LC_ALL, "C");
ECPGdebug(1, stderr);
EXEC SQL CONNECT TO REGRESSDB1 AS con1;
EXEC SQL CONNECT TO REGRESSDB2 AS con2;
EXEC SQL AT con1 CREATE TABLE source(f1 integer, f2 integer, f3 varchar(20));
EXEC SQL AT con2 CREATE TABLE source(f1 integer, f2 integer, f3 varchar(20));
EXEC SQL AT con1 INSERT INTO source VALUES(1, 10, 'db on con1');
EXEC SQL AT con1 INSERT INTO source VALUES(2, 20, 'db on con1');
EXEC SQL AT con2 INSERT INTO source VALUES(1, 10, 'db on con2');
EXEC SQL AT con2 INSERT INTO source VALUES(2, 20, 'db on con2');
commitTable();
execute_test();
EXEC SQL AT con1 DROP TABLE IF EXISTS source;
EXEC SQL AT con2 DROP TABLE IF EXISTS source;
commitTable();
EXEC SQL DISCONNECT ALL;
return 0;
}
/*
* default connection: con2
* Non-default connection: con1
*
*/
void execute_test(void)
{
EXEC SQL BEGIN DECLARE SECTION;
int i, count, length;
char *selectString = "SELECT f1,f2,f3 FROM source";
EXEC SQL END DECLARE SECTION;
/*
* testcase1. using DECLARE STATEMENT without using AT clause,
* using PREPARE and CURSOR statement without using AT clause
*/
reset();
EXEC SQL DECLARE stmt_1 STATEMENT;
EXEC SQL PREPARE stmt_1 FROM :selectString;
EXEC SQL DECLARE cur_1 CURSOR FOR stmt_1;
EXEC SQL OPEN cur_1;
EXEC SQL WHENEVER NOT FOUND DO BREAK;
i = 0;
while (1)
{
EXEC SQL FETCH cur_1 INTO :f1[i], :f2[i], :f3[i];
i++;
}
EXEC SQL CLOSE cur_1;
EXEC SQL DEALLOCATE PREPARE stmt_1;
EXEC SQL WHENEVER NOT FOUND CONTINUE;
printResult("testcase1", 2);
/*
* testcase2. using DECLARE STATEMENT at con1,
* using PREPARE and CURSOR statement without using AT clause
*/
reset();
EXEC SQL AT con1 DECLARE stmt_2 STATEMENT;
EXEC SQL PREPARE stmt_2 FROM :selectString;
EXEC SQL DECLARE cur_2 CURSOR FOR stmt_2;
EXEC SQL OPEN cur_2;
EXEC SQL WHENEVER NOT FOUND DO BREAK;
i = 0;
while (1)
{
EXEC SQL FETCH cur_2 INTO :f1[i], :f2[i], :f3[i];
i++;
}
EXEC SQL CLOSE cur_2;
EXEC SQL DEALLOCATE PREPARE stmt_2;
EXEC SQL WHENEVER NOT FOUND CONTINUE;
printResult("testcase2", 2);
/*
* testcase3. using DECLARE STATEMENT without using AT clause,
* using PREPARE and EXECUTE statement without using AT clause
*/
reset();
EXEC SQL DECLARE stmt_3 STATEMENT;
EXEC SQL PREPARE stmt_3 FROM :selectString;
EXEC SQL EXECUTE stmt_3 INTO :f1, :f2, :f3;
EXEC SQL DEALLOCATE PREPARE stmt_3;
printResult("testcase3", 2);
/*
* testcase4. using DECLARE STATEMENT without using AT clause,
* using PREPARE and CURSOR statement at con2
*/
reset();
EXEC SQL DECLARE stmt_4 STATEMENT;
EXEC SQL AT con2 PREPARE stmt_4 FROM :selectString;
EXEC SQL AT con2 DECLARE cur_4 CURSOR FOR stmt_4;
EXEC SQL AT con2 OPEN cur_4;
EXEC SQL WHENEVER NOT FOUND DO BREAK;
i = 0;
while (1)
{
EXEC SQL AT con2 FETCH cur_4 INTO :f1[i], :f2[i], :f3[i];
i++;
}
EXEC SQL AT con2 CLOSE cur_4;
EXEC SQL AT con2 DEALLOCATE PREPARE stmt_4;
EXEC SQL WHENEVER NOT FOUND CONTINUE;
printResult("testcase4", 2);
/*
* DESCRIBE statement is also supported.
*/
EXEC SQL AT con1 DECLARE stmt_desc STATEMENT;
EXEC SQL PREPARE stmt_desc FROM :selectString;
EXEC SQL DECLARE cur_desc CURSOR FOR stmt_desc;
EXEC SQL OPEN cur_desc;
/* descriptor can be used for describe statement */
EXEC SQL AT con1 ALLOCATE DESCRIPTOR desc_for_describe;
EXEC SQL DESCRIBE stmt_desc INTO SQL DESCRIPTOR desc_for_describe;
EXEC SQL AT con1 GET DESCRIPTOR desc_for_describe :count = COUNT;
EXEC SQL AT con1 GET DESCRIPTOR desc_for_describe VALUE 3 :length = LENGTH;
EXEC SQL AT con1 DEALLOCATE DESCRIPTOR desc_for_describe;
/* for fetch statement */
EXEC SQL AT con1 ALLOCATE DESCRIPTOR desc_for_fetch;
EXEC SQL FETCH cur_desc INTO SQL DESCRIPTOR desc_for_fetch;
EXEC SQL AT con1 GET DESCRIPTOR desc_for_fetch VALUE 3 :f3[0] = DATA;
EXEC SQL AT con1 DEALLOCATE DESCRIPTOR desc_for_fetch;
EXEC SQL CLOSE cur_desc;
EXEC SQL DEALLOCATE stmt_desc;
printf("****descriptor results****\n");
printf("count: %d, length: %d, data: %s\n", count, length, f3[0]);
}
void commitTable()
{
EXEC SQL AT con1 COMMIT;
EXEC SQL AT con2 COMMIT;
}
/*
* reset all the output variables
*/
void reset()
{
memset(f1, 0, sizeof(f1));
memset(f2, 0, sizeof(f2));
memset(f3, 0, sizeof(f3));
}
void printResult(char *tc_name, int loop)
{
int i;
if (tc_name)
printf("****%s test results:****\n", tc_name);
for (i = 0; i < loop; i++)
printf("f1=%d, f2=%d, f3=%s\n", f1[i], f2[i], f3[i]);
printf("\n");
}
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