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/*
* Test DML (INSERT, UPDATE, DELETE) commands
*/
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
int main(int argc, char **argv)
{
SQLRETURN rc;
HSTMT hstmt = SQL_NULL_HSTMT;
char param1[100];
SQLLEN cbParam1;
SQLCHAR *sql;
int i;
SQLLEN rowcount;
test_connect();
rc = SQLAllocHandle(SQL_HANDLE_STMT, conn, &hstmt);
if (!SQL_SUCCEEDED(rc))
{
print_diag("failed to allocate stmt handle", SQL_HANDLE_DBC, conn);
exit(1);
}
/* Prepare a test table */
sql = "CREATE TEMPORARY TABLE tmptable (i int4, t text)";
rc = SQLExecDirect(hstmt, (SQLCHAR *) sql, SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed while creating temp table", hstmt);
/* Insert some rows, using a prepared statement */
rc = SQLPrepare(hstmt, (SQLCHAR *) "INSERT INTO tmptable VALUES (?, 'foobar')", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLPrepare failed", hstmt);
for (i = 1; i <= 5; i++)
{
/* bind params */
snprintf(param1, sizeof(param1), "%d", i);
cbParam1 = SQL_NTS;
rc = SQLBindParameter(hstmt, 1, SQL_PARAM_INPUT,
SQL_C_CHAR, /* value type */
SQL_CHAR, /* param type */
20, /* column size */
0, /* dec digits */
param1, /* param value ptr */
0, /* buffer len */
&cbParam1 /* StrLen_or_IndPtr */);
CHECK_STMT_RESULT(rc, "SQLBindParameter failed", hstmt);
/* Execute */
rc = SQLExecute(hstmt);
CHECK_STMT_RESULT(rc, "SQLExecute failed", hstmt);
/* Test SQLRowCount() */
rc = SQLRowCount(hstmt, &rowcount);
CHECK_STMT_RESULT(rc, "SQLRowCount failed", hstmt);
printf("# of rows inserted: %d\n", (int) rowcount);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
}
/* Update some rows */
rc = SQLExecDirect(hstmt, (SQLCHAR *) "UPDATE tmptable SET t = 'updated ' || i WHERE i <= 3" , SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
rc = SQLRowCount(hstmt, &rowcount);
CHECK_STMT_RESULT(rc, "SQLRowCount failed", hstmt);
printf("# of rows updated: %d\n", (int) rowcount);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* and delete some rows */
rc = SQLExecDirect(hstmt, (SQLCHAR *) "DELETE FROM tmptable WHERE i = 4 OR i = 2" , SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
rc = SQLRowCount(hstmt, &rowcount);
CHECK_STMT_RESULT(rc, "SQLRowCount failed", hstmt);
printf("# of rows deleted: %d\n", (int) rowcount);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* Print the contents of the table after all the updates to verify */
rc = SQLExecDirect(hstmt, (SQLCHAR *) "SELECT * FROM tmptable", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
print_result(hstmt);
/* Clean up */
test_disconnect();
return 0;
}
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