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sqlite学习笔记9:C语言中使用sqlite之插入数据

前面创建了一张表,如今给他插入一些数据。插入数据跟创建表差点儿相同,不过SQL语言不一样而已,完整代码例如以下:

#include <stdio.h>
#include <stdlib.h>
#include "sqlite/sqlite3.h"

#define DB_NANE "sqlite/test.db"

sqlite3 *db = NULL;
char* sql = NULL;
char *zErrMsg = NULL;
int ret = 0;

typedef enum{
    false,
    true
} bool;

/*
typedef int (*sqlite3_callback)(
void*,    Data provided in the 4th argument of sqlite3_exec()
int,      The number of columns in row
char**,   An array of strings representing fields in the row
char**    An array of strings representing column names
);
*/
static int callback(void *NotUsed, int argc, char **argv, char **azColName)
{
    int i = 0;
    for(i=0; i < argc; i++){
        printf("%s = %s\n", azColName[i], argv[i] ?

argv[i] : "NULL"); } printf("\n"); return 0; } bool connectDB() { ret = sqlite3_open(DB_NANE, &db); if( ret != SQLITE_OK){ fprintf(stderr, "Error open database: %s\n", sqlite3_errmsg(db)); sqlite3_free(zErrMsg); return false; } fprintf(stdout, "Successfully opened database\n"); return true; } bool createTable() { /* Create SQL statement */ sql = "CREATE TABLE COMPANY(" "ID INT PRIMARY KEY NOT NULL," "NAME TEXT NOT NULL," "AGE INT NOT NULL," "ADDRESS CHAR(50)," "SALARY REAL );"; /* Execute SQL statement */ ret = sqlite3_exec(db, sql, callback, 0, &zErrMsg); if( ret != SQLITE_OK ){ fprintf(stderr, "Error SQL: %s\n", zErrMsg); sqlite3_free(zErrMsg); return false; } fprintf(stdout, "Successfully table created\n"); return true; }

/*加入了此函数*/
bool insertRecords()
{
    /* Create SQL statement */
    sql = "INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY) "      "VALUES (1, ‘Paul‘, 32, ‘California‘, 20000.00 ); "     "INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY) "      "VALUES (2, ‘Allen‘, 25, ‘Texas‘, 15000.00 ); "         "INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY)"     "VALUES (3, ‘Teddy‘, 23, ‘Norway‘, 20000.00 );"     "INSERT INTO COMPANY (ID,NAME,AGE,ADDRESS,SALARY)"     "VALUES (4, ‘Mark‘, 25, ‘Rich-Mond ‘, 65000.00 );";
    
    /* Execute SQL statement */
    ret = sqlite3_exec(db, sql, callback, 0, &zErrMsg);
    if( ret != SQLITE_OK ){
        fprintf(stderr, "SQL error: %s\n", zErrMsg);
        sqlite3_free(zErrMsg);
        return false;
    }
    
    fprintf(stdout, "successfully records created\n");

    return true;
}
bool closeDB()
{
    int ret = 0;
    ret = sqlite3_close(db);
    if ( ret == SQLITE_BUSY ){
        return false;
    }
    
    return true;
}

int main(int argc, char* argv[])
{
    connectDB();
    /*createTable();*/
    insertRecords();
    closeDB();
    
    return 0;
}


sqlite学习笔记9:C语言中使用sqlite之插入数据