C语言与sqlserver数据库
生活随笔
收集整理的這篇文章主要介紹了
C语言与sqlserver数据库
小編覺得挺不錯(cuò)的,現(xiàn)在分享給大家,幫大家做個(gè)參考.
C語言與sqlserver數(shù)據(jù)庫 原文:C語言與sqlserver數(shù)據(jù)庫 #include?<stdio.h>??? ?? #include?<string.h>??? ?? #include?<windows.h>??? ?? #include?<sql.h>??? ?? #include?<sqlext.h>??? ?? #include?<sqltypes.h>??? ?? #include?<odbcss.h>??? ?? ?? SQLHENV?henv?=?SQL_NULL_HENV;??? ?? SQLHDBC?hdbc1?=?SQL_NULL_HDBC;??? ?? SQLHSTMT?hstmt1?=?SQL_NULL_HSTMT;??? ?? ?? /* ? ????cpp文件功能說明： ? ????1.數(shù)據(jù)庫操作中的添加，修改，刪除，主要體現(xiàn)在SQL語句上 ? ????2.采用直接執(zhí)行方式和參數(shù)預(yù)編譯執(zhí)行方式兩種 ? */?? int?main(){??? ?? ????RETCODE?retcode;??? ?? ????UCHAR???szDSN[SQL_MAX_DSN_LENGTH+1]???=???"csql",??? ?? ????????????szUID[MAXNAME]???=???"sa",??? ?? ????????????szAuthStr[MAXNAME]???=???"";?? ?? ????//SQL語句 ?? ????????//直接SQL語句 ?? ????UCHAR???sql[37]?=?"insert?into?test?values('aaa','100')"; ?? ????????//預(yù)編譯SQL語句 ?? ????UCHAR???pre_sql[29]?=?"insert?into?test?values(?,?)"; ?? ????//1.連接數(shù)據(jù)源 ?? ????????//1.環(huán)境句柄 ?? ????retcode???=???SQLAllocHandle???(SQL_HANDLE_ENV,???NULL,???&henv);??? ?? ????retcode???=???SQLSetEnvAttr(henv,???SQL_ATTR_ODBC_VERSION,??? ?? ??????????????????(SQLPOINTER)SQL_OV_ODBC3,??? ?? ??????????????????SQL_IS_INTEGER);??? ?? ????????//2.連接句柄?? ?? ????retcode???=???SQLAllocHandle(SQL_HANDLE_DBC,???henv,???&hdbc1);??? ?? ????retcode???=???SQLConnect(hdbc1,???szDSN,???4,???szUID,???2,???szAuthStr,???0);???? ?? ????//判斷連接是否成功 ?? ????if???(???(retcode???!=???SQL_SUCCESS)???&&???(retcode???!=???SQL_SUCCESS_WITH_INFO)???)???{????? ?? ????????printf("連接失敗!/n"); ?? ????}???else???{??? ?? ????????//2.創(chuàng)建并執(zhí)行一條或多條SQL語句 ?? ????????/* ? ????????1.分配一個(gè)語句句柄(statement?handle) ? ????????2.創(chuàng)建SQL語句 ? ????????3.執(zhí)行語句 ? ????????4.銷毀語句 ? ????????*/?? ????????retcode???=???SQLAllocHandle(SQL_HANDLE_STMT,???hdbc1,???&hstmt1);??? ?? ????????//第一種方式 ?? ????????//直接執(zhí)行 ?? ????????//添加操作 ?? ????????//SQLExecDirect?(hstmt1,sql,37); ?? ???????? ?? ????????//第二種方式 ?? ????????//綁定參數(shù)方式 ?? ????????char?a[200]="bbb"; ?? ????????char?b[200]="200"; ?? ????????SQLINTEGER???p???=???SQL_NTS; ?? ????????//1預(yù)編譯 ?? ????????SQLPrepare(hstmt1,pre_sql,29);?//第三個(gè)參數(shù)與數(shù)組大小相同，而不是數(shù)據(jù)庫列相同 ?? ????????//2綁定參數(shù)值 ?? ????????SQLBindParameter(hstmt1,1,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,200,0,&a,0,&p); ?? ????????SQLBindParameter(hstmt1,2,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,200,0,&b,0,&p); ?? ????????//3?執(zhí)行 ?? ????????SQLExecute(hstmt1); ?? ???????? ?? ????????printf("操作成功!"); ?? ????????//釋放語句句柄 ?? ????????SQLCloseCursor?(hstmt1); ?? ????????SQLFreeHandle?(SQL_HANDLE_STMT,?hstmt1); ?? ???? ?? ????}??? ?? ????//3.斷開數(shù)據(jù)源 ?? ????/* ? ?????1.斷開與數(shù)據(jù)源的連接. ? ?????2.釋放連接句柄. ? ?????3.釋放環(huán)境句柄?(如果不再需要在這個(gè)環(huán)境中作更多連接) ? ????*/?? ????SQLDisconnect(hdbc1);???? ?? ????SQLFreeHandle(SQL_HANDLE_DBC,?hdbc1);??? ?? ????SQLFreeHandle(SQL_HANDLE_ENV,?henv);??? ?? ????return(0);??? ?? }????? #include <stdio.h>
#include <string.h>
#include <windows.h>
#include <sql.h>
#include <sqlext.h>
#include <sqltypes.h>
#include <odbcss.h> SQLHENV henv = SQL_NULL_HENV;
SQLHDBC hdbc1 = SQL_NULL_HDBC;
SQLHSTMT hstmt1 = SQL_NULL_HSTMT; /*cpp文件功能說明：1.數(shù)據(jù)庫操作中的添加，修改，刪除，主要體現(xiàn)在SQL語句上2.采用直接執(zhí)行方式和參數(shù)預(yù)編譯執(zhí)行方式兩種
*/
int main(){ RETCODE retcode; UCHAR szDSN[SQL_MAX_DSN_LENGTH+1] = "csql", szUID[MAXNAME] = "sa", szAuthStr[MAXNAME] = ""; //SQL語句//直接SQL語句UCHAR sql[37] = "insert into test values('aaa','100')";//預(yù)編譯SQL語句UCHAR pre_sql[29] = "insert into test values(?,?)";//1.連接數(shù)據(jù)源//1.環(huán)境句柄retcode = SQLAllocHandle (SQL_HANDLE_ENV, NULL, &henv); retcode = SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (SQLPOINTER)SQL_OV_ODBC3, SQL_IS_INTEGER); //2.連接句柄 retcode = SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc1); retcode = SQLConnect(hdbc1, szDSN, 4, szUID, 2, szAuthStr, 0); //判斷連接是否成功if ( (retcode != SQL_SUCCESS) && (retcode != SQL_SUCCESS_WITH_INFO) ) { printf("連接失敗!/n");} else { //2.創(chuàng)建并執(zhí)行一條或多條SQL語句/*1.分配一個(gè)語句句柄(statement handle)2.創(chuàng)建SQL語句3.執(zhí)行語句4.銷毀語句*/retcode = SQLAllocHandle(SQL_HANDLE_STMT, hdbc1, &hstmt1); //第一種方式//直接執(zhí)行//添加操作//SQLExecDirect (hstmt1,sql,37);//第二種方式//綁定參數(shù)方式char a[200]="bbb";char b[200]="200";SQLINTEGER p = SQL_NTS;//1預(yù)編譯SQLPrepare(hstmt1,pre_sql,29); //第三個(gè)參數(shù)與數(shù)組大小相同，而不是數(shù)據(jù)庫列相同//2綁定參數(shù)值SQLBindParameter(hstmt1,1,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,200,0,&a,0,&p);SQLBindParameter(hstmt1,2,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,200,0,&b,0,&p);//3 執(zhí)行SQLExecute(hstmt1);printf("操作成功!");//釋放語句句柄SQLCloseCursor (hstmt1);SQLFreeHandle (SQL_HANDLE_STMT, hstmt1);} //3.斷開數(shù)據(jù)源/*1.斷開與數(shù)據(jù)源的連接.2.釋放連接句柄.3.釋放環(huán)境句柄 (如果不再需要在這個(gè)環(huán)境中作更多連接)*/SQLDisconnect(hdbc1); SQLFreeHandle(SQL_HANDLE_DBC, hdbc1); SQLFreeHandle(SQL_HANDLE_ENV, henv); return(0);
} #include?<stdio.h>??? ?? #include?<string.h>??? ?? #include?<windows.h>??? ?? #include?<sql.h>??? ?? #include?<sqlext.h>??? ?? #include?<sqltypes.h>??? ?? #include?<odbcss.h>??? ?? ?? SQLHENV?henv?=?SQL_NULL_HENV;??? ?? SQLHDBC?hdbc1?=?SQL_NULL_HDBC;??? ?? SQLHSTMT?hstmt1?=?SQL_NULL_HSTMT;??? ?? ?? /* ? ????查詢SQLSERVER數(shù)據(jù)庫,1.條件查詢,2.直接查詢?nèi)?? */?? int?main(){??? ?? ????RETCODE?retcode;??? ?? ????UCHAR???szDSN[SQL_MAX_DSN_LENGTH+1]???=???"csql",??? ?? ????????????szUID[MAXNAME]???=???"sa",??? ?? ????????????szAuthStr[MAXNAME]???=???"";?? ?? ????UCHAR???sql1[39]?=?"select?b?from?test?where?a?=?'aaa'"; ?? ????UCHAR???sql2[35]?=?"select?b?from?test?where?a?=???"; ?? ????UCHAR???sql3[19]?=?"select?b?from?test"; ?? ???? ?? ????retcode???=???SQLAllocHandle???(SQL_HANDLE_ENV,???NULL,???&henv);??? ?? ????retcode???=???SQLSetEnvAttr(henv,???SQL_ATTR_ODBC_VERSION,??? ?? ??????????????????(SQLPOINTER)SQL_OV_ODBC3,??? ?? ??????????????????SQL_IS_INTEGER);???? ?? ????retcode???=???SQLAllocHandle(SQL_HANDLE_DBC,???henv,???&hdbc1);??? ?? ????//1.連接數(shù)據(jù)源 ?? ????retcode???=???SQLConnect(hdbc1,???szDSN,???4,???szUID,???2,???szAuthStr,???0);???? ?? ????if???(???(retcode???!=???SQL_SUCCESS)???&&???(retcode???!=???SQL_SUCCESS_WITH_INFO)???)???{??? ?? ????????printf("連接失敗!"); ?? ????}???else???{??? ?? ????????//2.創(chuàng)建并執(zhí)行一條或多條SQL語句 ?? ????????/* ? ????????1.分配一個(gè)語句句柄(statement?handle) ? ????????2.創(chuàng)建SQL語句 ? ????????3.執(zhí)行語句 ? ????????4.銷毀語句 ? ????????*/?? ????????retcode???=???SQLAllocHandle(SQL_HANDLE_STMT,???hdbc1,???&hstmt1);??? ?? ????????//第一種方式 ?? ????????/* ? ????????//直接執(zhí)行 ? ????????SQLExecDirect?(hstmt1,sql1,39); ? ????????char?list[5]; ? ????????SQLBindCol(hstmt1,?1,?SQL_C_CHAR,?list,?5,?0); ? ????????SQLFetch(hstmt1); ? ????????printf("%s/n",list); ? ????????*/?? ???????? ?? ????????//第二種方式 ?? ????????/* ? ????????//綁定參數(shù)方式 ? ????????char?a[200]="aaa"; ? ????????SQLINTEGER???p???=???SQL_NTS; ? ????????//1.預(yù)編譯 ? ????????SQLPrepare(hstmt1,sql2,35);?//第三個(gè)參數(shù)與數(shù)組大小相同，而不是數(shù)據(jù)庫列相同 ? ????????//2.綁定參數(shù)值 ? ????????SQLBindParameter(hstmt1,1,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,200,0,&a,0,&p); ? ????????//3.執(zhí)行 ? ????????SQLExecute(hstmt1); ? ????????char?list[5]; ? ????????SQLBindCol(hstmt1,?1,?SQL_C_CHAR,?list,?5,?0); ? ????????SQLFetch(hstmt1); ? ????????printf("%s/n",list); ? ????????*/?? ?? ????????//第三種方式全部輸出 ?? ????????/* ? ????????1.確認(rèn)一個(gè)結(jié)果集是否可用。 ? ????????2.將結(jié)果集的列綁定在適當(dāng)?shù)淖兞可稀?? ????????3.取得行 ? ????????*/?? ????????//3.檢查結(jié)果記錄(如果有的話) ?? ????????SQLExecDirect?(hstmt1,sql3,19); ?? ????????char?list[5]; ?? ????????SQLBindCol(hstmt1,?1,?SQL_C_CHAR,?list,?5,?0); ?? ????????do{ ?? ????????????retcode?=?SQLFetch(hstmt1); ?? ????????????if(retcode?==?SQL_NO_DATA){ ?? ????????????????break; ?? ????????????} ?? ????????????printf("%s/n",list); ?? ????????}while(1); ?? ???????? ?? ????????//釋放語句句柄 ?? ????????SQLCloseCursor?(hstmt1); ?? ????????SQLFreeHandle?(SQL_HANDLE_STMT,?hstmt1); ?? ???? ?? ????}??? ?? ? ?? ????//4.斷開數(shù)據(jù)源 ?? ????/* ? ?????1.斷開與數(shù)據(jù)源的連接. ? ?????2.釋放連接句柄. ? ?????3.釋放環(huán)境句柄?(如果不再需要在這個(gè)環(huán)境中作更多連接) ? ????*/?? ????SQLDisconnect(hdbc1);???? ?? ????SQLFreeHandle(SQL_HANDLE_DBC,?hdbc1);??? ?? ????SQLFreeHandle(SQL_HANDLE_ENV,?henv);??? ?? ????return(0);??? ?? }???? #include <stdio.h>
#include <string.h>
#include <windows.h>
#include <sql.h>
#include <sqlext.h>
#include <sqltypes.h>
#include <odbcss.h> SQLHENV henv = SQL_NULL_HENV;
SQLHDBC hdbc1 = SQL_NULL_HDBC;
SQLHSTMT hstmt1 = SQL_NULL_HSTMT; /*查詢SQLSERVER數(shù)據(jù)庫,1.條件查詢,2.直接查詢?nèi)?*/
int main(){ RETCODE retcode; UCHAR szDSN[SQL_MAX_DSN_LENGTH+1] = "csql", szUID[MAXNAME] = "sa", szAuthStr[MAXNAME] = ""; UCHAR sql1[39] = "select b from test where a = 'aaa'";UCHAR sql2[35] = "select b from test where a = ? ";UCHAR sql3[19] = "select b from test";retcode = SQLAllocHandle (SQL_HANDLE_ENV, NULL, &henv); retcode = SQLSetEnvAttr(henv, SQL_ATTR_ODBC_VERSION, (SQLPOINTER)SQL_OV_ODBC3, SQL_IS_INTEGER); retcode = SQLAllocHandle(SQL_HANDLE_DBC, henv, &hdbc1); //1.連接數(shù)據(jù)源retcode = SQLConnect(hdbc1, szDSN, 4, szUID, 2, szAuthStr, 0); if ( (retcode != SQL_SUCCESS) && (retcode != SQL_SUCCESS_WITH_INFO) ) { printf("連接失敗!");} else { //2.創(chuàng)建并執(zhí)行一條或多條SQL語句/*1.分配一個(gè)語句句柄(statement handle)2.創(chuàng)建SQL語句3.執(zhí)行語句4.銷毀語句*/retcode = SQLAllocHandle(SQL_HANDLE_STMT, hdbc1, &hstmt1); //第一種方式/*//直接執(zhí)行SQLExecDirect (hstmt1,sql1,39);char list[5];SQLBindCol(hstmt1, 1, SQL_C_CHAR, list, 5, 0);SQLFetch(hstmt1);printf("%s/n",list);*///第二種方式/*//綁定參數(shù)方式char a[200]="aaa";SQLINTEGER p = SQL_NTS;//1.預(yù)編譯SQLPrepare(hstmt1,sql2,35); //第三個(gè)參數(shù)與數(shù)組大小相同，而不是數(shù)據(jù)庫列相同//2.綁定參數(shù)值SQLBindParameter(hstmt1,1,SQL_PARAM_INPUT,SQL_C_CHAR,SQL_CHAR,200,0,&a,0,&p);//3.執(zhí)行SQLExecute(hstmt1);char list[5];SQLBindCol(hstmt1, 1, SQL_C_CHAR, list, 5, 0);SQLFetch(hstmt1);printf("%s/n",list);*///第三種方式全部輸出/*1.確認(rèn)一個(gè)結(jié)果集是否可用。2.將結(jié)果集的列綁定在適當(dāng)?shù)淖兞可稀?.取得行*///3.檢查結(jié)果記錄(如果有的話)SQLExecDirect (hstmt1,sql3,19);char list[5];SQLBindCol(hstmt1, 1, SQL_C_CHAR, list, 5, 0);do{retcode = SQLFetch(hstmt1);if(retcode == SQL_NO_DATA){break;}printf("%s/n",list);}while(1);//釋放語句句柄SQLCloseCursor (hstmt1);SQLFreeHandle (SQL_HANDLE_STMT, hstmt1);} //4.斷開數(shù)據(jù)源/*1.斷開與數(shù)據(jù)源的連接.2.釋放連接句柄.3.釋放環(huán)境句柄 (如果不再需要在這個(gè)環(huán)境中作更多連接)*/SQLDisconnect(hdbc1); SQLFreeHandle(SQL_HANDLE_DBC, hdbc1); SQLFreeHandle(SQL_HANDLE_ENV, henv); return(0);
}
1.使用C語言來操作SQL SERVER數(shù)據(jù)庫,采用ODBC開放式數(shù)據(jù)庫連接進(jìn)行數(shù)據(jù)的添加,修改,刪除,查詢等操作。
?step1:啟動(dòng)SQLSERVER服務(wù),例如:HNHJ,開始菜單 ->運(yùn)行 ->net start mssqlserver
?step2:打開企業(yè)管理器,建立數(shù)據(jù)庫test,在test庫中建立test表(a varchar(200),b varchar(200))
?step3:建立系統(tǒng)DSN,開始菜單 ->運(yùn)行 ->odbcad32,
??添加->SQL SERVER
?名稱：csql,服務(wù)器：HNHJ
?使用用戶使用登錄ID和密碼的SQLSERVER驗(yàn)證,登錄ID:sa,密碼:
??更改默認(rèn)的數(shù)據(jù)庫為:test
?...
?測試數(shù)據(jù)源，測試成功，即DNS添加成功。
2.cpp文件完整代碼
//##########################save.cpp##########################
C代碼?
//##########################list.cpp##########################
C代碼?
3.總結(jié)：ODBC數(shù)據(jù)庫操作與JDBC步驟上類似，可以融匯貫通來學(xué)習(xí)
本文來自于http://simpledev.javaeye.com/blog/339537
posted on 2014-12-09 13:18 NET未來之路 閱讀(...) 評論(...) 編輯 收藏轉(zhuǎn)載于:https://www.cnblogs.com/lonelyxmas/p/4153030.html
總結(jié)
以上是生活随笔為你收集整理的C语言与sqlserver数据库的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。
- 上一篇： C++求解最大子序列和问题
- 下一篇： EDP项目结构规范心得