2.c

写一个Proc*程序,执行查询： Select * from scott.emp； 取出emp的字段名和类型

/* Result Sets Interface */
#ifndef SQL_CRSR
#  define SQL_CRSR
  struct sql_cursor
  {
    unsigned int curocn;
    void *ptr1;
    void *ptr2;
    unsigned int magic;
  };
  typedef struct sql_cursor sql_cursor;
  typedef struct sql_cursor SQL_CURSOR;
#endif /* SQL_CRSR */

/* Thread Safety */
typedef void * sql_context;
typedef void * SQL_CONTEXT;

/* Object support */
struct sqltvn
{
  unsigned char *tvnvsn; 
  unsigned short tvnvsnl; 
  unsigned char *tvnnm;
  unsigned short tvnnml; 
  unsigned char *tvnsnm;
  unsigned short tvnsnml;
};
typedef struct sqltvn sqltvn;

struct sqladts
{
  unsigned int adtvsn; 
  unsigned short adtmode; 
  unsigned short adtnum;  
  sqltvn adttvn[1];       
};
typedef struct sqladts sqladts;

static struct sqladts sqladt = {
  1,1,0,
};

/* Binding to PL/SQL Records */
struct sqltdss
{
  unsigned int tdsvsn; 
  unsigned short tdsnum; 
  unsigned char *tdsval[1]; 
};
typedef struct sqltdss sqltdss;
static struct sqltdss sqltds =
{
  1,
  0,
};

/* File name & Package Name */
struct sqlcxp
{
  unsigned short fillen;
           char  filnam[5];
};
static const struct sqlcxp sqlfpn =
{
    4,
    "2.pc"
};


static unsigned int sqlctx = 811;


static struct sqlexd {
   unsigned int   sqlvsn;
   unsigned int   arrsiz;
   unsigned int   iters;
   unsigned int   offset;
   unsigned short selerr;
   unsigned short sqlety;
   unsigned int   occurs;
      const short *cud;
   unsigned char  *sqlest;
      const char  *stmt;
   sqladts *sqladtp;
   sqltdss *sqltdsp;
            void  **sqphsv;
   unsigned int   *sqphsl;
            int   *sqphss;
            void  **sqpind;
            int   *sqpins;
   unsigned int   *sqparm;
   unsigned int   **sqparc;
   unsigned short  *sqpadto;
   unsigned short  *sqptdso;
   unsigned int   sqlcmax;
   unsigned int   sqlcmin;
   unsigned int   sqlcincr;
   unsigned int   sqlctimeout;
   unsigned int   sqlcnowait;
              int   sqfoff;
   unsigned int   sqcmod;
   unsigned int   sqfmod;
            void  *sqhstv[8];
   unsigned int   sqhstl[8];
            int   sqhsts[8];
            void  *sqindv[8];
            int   sqinds[8];
   unsigned int   sqharm[8];
   unsigned int   *sqharc[8];
   unsigned short  sqadto[8];
   unsigned short  sqtdso[8];
} sqlstm = {12,8};

/* SQLLIB Prototypes */
extern void sqlcxt (void **, unsigned int *,
                    struct sqlexd *, const struct sqlcxp *);
extern void sqlcx2t(void **, unsigned int *,
                    struct sqlexd *, const struct sqlcxp *);
extern void sqlbuft(void **, char *);
extern void sqlgs2t(void **, char *);
extern void sqlorat(void **, unsigned int *, void *);

/* Forms Interface */
static const int IAPSUCC = 0;
static const int IAPFAIL = 1403;
static const int IAPFTL  = 535;
extern void sqliem(char *, int *);

 static const char *sq0003 = 
"select COLUMN_NAME ,DATA_TYPE  from USER_TAB_COLUMNS where TABLE_NAME='EMP'\
           ";

 static const char *sq0004 = 
"select EMPNO ,ENAME ,JOB ,MGR ,TO_CHAR(HIREDATE) ,SAL ,NVL(COMM,0) ,DEPTNO \
 from EMP            ";

typedef struct { unsigned short len; unsigned char arr[1]; } VARCHAR;
typedef struct { unsigned short len; unsigned char arr[1]; } varchar;

/* cud (compilation unit data) array */
static const short sqlcud0[] =
{12,4130,852,0,0,
5,0,0,1,0,0,544,24,0,0,0,0,0,1,0,
20,0,0,2,0,0,539,33,0,0,4,4,0,1,0,1,9,0,0,1,10,0,0,1,10,0,0,1,10,0,0,
51,0,0,3,86,0,521,39,0,0,0,0,0,1,0,
66,0,0,3,0,0,525,40,0,0,2,0,0,1,0,2,9,0,0,2,9,0,0,
89,0,0,3,0,0,525,43,0,0,2,0,0,1,0,2,9,0,0,2,9,0,0,
112,0,0,3,0,0,527,44,0,0,0,0,0,1,0,
127,0,0,4,96,0,521,46,0,0,0,0,0,1,0,
142,0,0,4,0,0,525,49,0,0,8,0,0,1,0,2,3,0,0,2,9,0,0,2,9,0,0,2,3,0,0,2,9,0,0,2,4,
0,0,2,4,0,0,2,3,0,0,
189,0,0,4,0,0,527,56,0,0,0,0,0,1,0,
204,0,0,5,0,0,544,57,0,0,0,0,0,1,0,
};


#include <stdlib.h>
#include <stdio.h>
#include <string.h> 
/* EXEC ORACLE OPTION (RELEASE_CURSOR = YES); */ 
 
/* EXEC SQL BEGIN DECLARE SECTION; */ 
 
/* varchar fieldName[20]; */ 
struct { unsigned short len; unsigned char arr[20]; } fieldName;

/* Varchar fieldType[20]; */ 
struct { unsigned short len; unsigned char arr[20]; } fieldType;

/* varchar vc_user[20]; */ 
struct { unsigned short len; unsigned char arr[20]; } vc_user;
 
int empno;
/* VARCHAR ename[15]; */ 
struct { unsigned short len; unsigned char arr[15]; } ename;

/* VARCHAR job[15]; */ 
struct { unsigned short len; unsigned char arr[15]; } job;

int mar;
/* VARCHAR hiredate[20]; */ 
struct { unsigned short len; unsigned char arr[20]; } hiredate;

float sal;
float comm;
int deptno;
/* EXEC SQL END DECLARE SECTION; */ 
 

/* EXEC SQL INCLUDE "SQLCA.H";
 */ 
/*
 * $Header: sqlca.h,v 1.3 1994/12/12 19:27:27 jbasu Exp $ sqlca.h 
 */

/* Copyright (c) 1985,1986, 1998 by Oracle Corporation. */
 
/*
NAME
  SQLCA : SQL Communications Area.
FUNCTION
  Contains no code. Oracle fills in the SQLCA with status info
  during the execution of a SQL stmt.
NOTES
  **************************************************************
  ***                                                        ***
  *** This file is SOSD.  Porters must change the data types ***
  *** appropriately on their platform.  See notes/pcport.doc ***
  *** for more information.                                  ***
  ***                                                        ***
  **************************************************************

  If the symbol SQLCA_STORAGE_CLASS is defined, then the SQLCA
  will be defined to have this storage class. For example:
 
    #define SQLCA_STORAGE_CLASS extern
 
  will define the SQLCA as an extern.
 
  If the symbol SQLCA_INIT is defined, then the SQLCA will be
  statically initialized. Although this is not necessary in order
  to use the SQLCA, it is a good pgming practice not to have
  unitialized variables. However, some C compilers/OS's don't
  allow automatic variables to be init'd in this manner. Therefore,
  if you are INCLUDE'ing the SQLCA in a place where it would be
  an automatic AND your C compiler/OS doesn't allow this style
  of initialization, then SQLCA_INIT should be left undefined --
  all others can define SQLCA_INIT if they wish.

  If the symbol SQLCA_NONE is defined, then the SQLCA variable will
  not be defined at all.  The symbol SQLCA_NONE should not be defined
  in source modules that have embedded SQL.  However, source modules
  that have no embedded SQL, but need to manipulate a sqlca struct
  passed in as a parameter, can set the SQLCA_NONE symbol to avoid
  creation of an extraneous sqlca variable.
 
MODIFIED
    lvbcheng   07/31/98 -  long to int
    jbasu      12/12/94 -  Bug 217878: note this is an SOSD file
    losborne   08/11/92 -  No sqlca var if SQLCA_NONE macro set 
  Clare      12/06/84 - Ch SQLCA to not be an extern.
  Clare      10/21/85 - Add initialization.
  Bradbury   01/05/86 - Only initialize when SQLCA_INIT set
  Clare      06/12/86 - Add SQLCA_STORAGE_CLASS option.
*/
 
#ifndef SQLCA
#define SQLCA 1
 
struct   sqlca
         {
         /* ub1 */ char    sqlcaid[8];
         /* b4  */ int     sqlabc;
         /* b4  */ int     sqlcode;
         struct
           {
           /* ub2 */ unsigned short sqlerrml;
           /* ub1 */ char           sqlerrmc[70];
           } sqlerrm;
         /* ub1 */ char    sqlerrp[8];
         /* b4  */ int     sqlerrd[6];
         /* ub1 */ char    sqlwarn[8];
         /* ub1 */ char    sqlext[8];
         };

#ifndef SQLCA_NONE 
#ifdef   SQLCA_STORAGE_CLASS
SQLCA_STORAGE_CLASS struct sqlca sqlca
#else
         struct sqlca sqlca
#endif
 
#ifdef  SQLCA_INIT
         = {
         {'S', 'Q', 'L', 'C', 'A', ' ', ' ', ' '},
         sizeof(struct sqlca),
         0,
         { 0, {0}},
         {'N', 'O', 'T', ' ', 'S', 'E', 'T', ' '},
         {0, 0, 0, 0, 0, 0},
         {0, 0, 0, 0, 0, 0, 0, 0},
         {0, 0, 0, 0, 0, 0, 0, 0}
         }
#endif
         ;
#endif
 
#endif
 
/* end SQLCA */

/*错误处理函数*/ 
void sql_error(char *msg) 
{ 
printf("\n%s,%ld,%s\n", msg,sqlca.sqlcode,(char *)sqlca.sqlerrm.sqlerrmc); 
/* EXEC SQL ROLLBACK RELEASE; */ 

{
struct sqlexd sqlstm;
sqlstm.sqlvsn = 12;
sqlstm.arrsiz = 0;
sqlstm.sqladtp = &sqladt;
sqlstm.sqltdsp = &sqltds;
sqlstm.iters = (unsigned int  )1;
sqlstm.offset = (unsigned int  )5;
sqlstm.cud = sqlcud0;
sqlstm.sqlest = (unsigned char  *)&sqlca;
sqlstm.sqlety = (unsigned short)256;
sqlstm.occurs = (unsigned int  )0;
sqlcxt((void **)0, &sqlctx, &sqlstm, &sqlfpn);
}

 
exit(-1); 
} 
main() 
{ 
/* EXEC SQL WHENEVER SQLERROR DO sql_error("ORACLE ERROR: "); */ 
 
/*连接数据库*/ 
strcpy(vc_user.arr,"scott/ljh@orcl"); 
vc_user.len=16; 
/* exec sql connect :vc_user; */ 

{
struct sqlexd sqlstm;
sqlstm.sqlvsn = 12;
sqlstm.arrsiz = 4;
sqlstm.sqladtp = &sqladt;
sqlstm.sqltdsp = &sqltds;
sqlstm.iters = (unsigned int  )10;
sqlstm.offset = (unsigned int  )20;
sqlstm.cud = sqlcud0;
sqlstm.sqlest = (unsigned char  *)&sqlca;
sqlstm.sqlety = (unsigned short)256;
sqlstm.occurs = (unsigned int  )0;