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#include <stdio.h>
#include <stdlib.h>
#include "common.h"
int main(int argc, char **argv)
{
SQLRETURN rc;
HSTMT hstmt = SQL_NULL_HSTMT;
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);
}
/* Create a table to test with */
rc = SQLExecDirect(hstmt, (SQLCHAR *) "CREATE TEMPORARY TABLE testtbl(t varchar(40))", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
/**** A simple query against the table, fetch column info ****/
rc = SQLExecDirect(hstmt, "SELECT * FROM testtbl", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
/* Get column metadata */
print_result_meta(hstmt);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* Alter the table */
rc = SQLExecDirect(hstmt, (SQLCHAR *) "ALTER TABLE testtbl ALTER COLUMN t TYPE varchar(80)", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
/* Run the query again, check if the metadata was updated */
rc = SQLExecDirect(hstmt, "SELECT * FROM testtbl", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
/* Get column metadata */
print_result_meta(hstmt);
/* Clean up */
test_disconnect();
return 0;
}
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