s-dbusemx-sqc

/****************************************************************************
** (c) Copyright IBM Corp. 2007 All rights reserved.
** 
** The following sample of source code ("Sample") is owned by International 
** Business Machines Corporation or one of its subsidiaries ("IBM") and is 
** copyrighted and licensed, not sold. You may use, copy, modify, and 
** distribute the Sample in any form without payment to IBM, for the purpose of 
** assisting you in the development of your applications.
** 
** The Sample code is provided to you on an "AS IS" basis, without warranty of 
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** any damages you suffer as a result of using, copying, modifying or 
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*****************************************************************************
**                                                                        
** SOURCE FILE NAME: dbusemx.sqc                                      
**                                                                        
** SAMPLE: How to execute embedded SQL statements in CLI
**
** CLI FUNCTIONS USED:
**         SQLEndTran -- End Transactions of a Connection
**         SQLSetConnectAttr -- Set Connection Attributes
**
** SQL STATEMENTS USED:
**         INCLUDE
**         CREATE TABLE
**
** STRUCTURES USED:
**         sqlca
**
**                           
*****************************************************************************
**
** For more information on the sample programs, see the README file.
**
** For information on developing CLI applications, see the CLI Guide
** and Reference.
**
** For information on using SQL statements, see the SQL Reference.
**
** For the latest information on programming, building, and running DB2 
** applications, visit the DB2 Information Center: 
**     http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp
****************************************************************************/

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sqlcli1.h>
#include <sql.h>
#include <sqlenv.h>
#include "utilcli.h" /* header file for CLI sample code */

int CLIMixEmbedded(SQLHANDLE);

EXEC SQL INCLUDE SQLCA;

int main(int argc, char *argv[])
{
  SQLRETURN cliRC = SQL_SUCCESS;
  int rc = 0;
  SQLHANDLE henv; /* environment handle */
  SQLHANDLE hdbc; /* connection handle */

  char dbAlias[SQL_MAX_DSN_LENGTH + 1];
  char user[MAX_UID_LENGTH + 1];
  char pswd[MAX_PWD_LENGTH + 1];

  /* check the command line arguments */
  rc = CmdLineArgsCheck1(argc, argv, dbAlias, user, pswd);
  if (rc != 0)
  {
    return rc;
  }

  printf("\nTHIS SAMPLE SHOWS HOW TO EXECUTE\n");
  printf("EMBEDDED SQL STATEMENTS IN CLI");

  /* initialize the CLI application by calling a helper
     utility function defined in utilcli.c */
  rc = CLIAppInit(dbAlias,
                  user,
                  pswd,
                  &henv,
                  &hdbc,
                  (SQLPOINTER)SQL_AUTOCOMMIT_OFF);
  if (rc != 0)
  {
    return rc;
  }

  /* mix CLI calls with embedded SQL */
  rc = CLIMixEmbedded(hdbc);

  /* terminate the CLI application by calling a helper
     utility function defined in utilcli.c */
  rc = CLIAppTerm(&henv, &hdbc, dbAlias);
  return rc;
} /* main */

/* mix CLI calls with embedded SQL */
int CLIMixEmbedded(SQLHANDLE hdbc)
{
  SQLRETURN cliRC = SQL_SUCCESS;
  int rc = 0;

  printf("\n-----------------------------------------------------------");
  printf("\nUSE THE EMBEDDED SQL STATEMENT\n");
  printf("  CREATE TABLE table1 (col1 INTEGER)\n");
  printf("TO SHOW HOW TO MIX CLI WITH EMBEDDED SQL:\n");

  /* set AUTOCOMMIT OFF */
  cliRC = SQLSetConnectAttr(hdbc,
                            SQL_ATTR_AUTOCOMMIT,
                            (SQLPOINTER)SQL_AUTOCOMMIT_OFF,
                            SQL_NTS);
  DBC_HANDLE_CHECK(hdbc, cliRC);
  printf("\n  Transactions enabled\n");

  /* execute the embedded SQL statement */
  printf("\n  Execute the embedded SQL statement:\n");
  printf("    CREATE TABLE table1 (col1 INTEGER)\n");

  EXEC SQL CREATE TABLE table1(col1 INTEGER);
  if (SQLCODE != 0)
  {
    printf("\nError while executing the embedded SQL statement.\n");
  }

  printf("\n  Rolling back the transaction...\n");

  /* end transactions on the connection */
  cliRC = SQLEndTran(SQL_HANDLE_DBC, hdbc, SQL_ROLLBACK);
  DBC_HANDLE_CHECK(hdbc, cliRC);

  printf("  Transaction rolled back.\n");

  return rc;
} /* CLIMixEmbedded */