在下面的示例中，介绍了使用mysql_stmt_init()、mysql_stmt_prepare()、mysql_stmt_param_count()、mysql_stmt_bind_param()、mysql_stmt_execute()、以及mysql_stmt_affected_rows()创建和填充表的方法。假定mysql变量具有有效的连接句柄。

//tests/mysql_client_test.c

#define STRING_SIZE 50

#define DROP_SAMPLE_TABLE "DROP TABLE IF EXISTS test_table"

#define CREATE_SAMPLE_TABLE "CREATE TABLE test_table(col1 INT,\

col2 VARCHAR(40),\

col3 SMALLINT,\

col4 TIMESTAMP)"

#define INSERT_SAMPLE "INSERT INTO test_table(col1,col2,col3) VALUES(?,?,?)"

MYSQL_STMT *stmt;

MYSQL_BIND bind[3];

my_ulonglong affected_rows;

int param_count;

short small_data;

int int_data;

char str_data[STRING_SIZE];

unsigned long str_length;

my_bool is_null;

if (mysql_query(mysql, DROP_SAMPLE_TABLE))

{

fprintf(stderr, " DROP TABLE failed\n");

fprintf(stderr, " %s\n", mysql_error(mysql));

exit(0);

}

if (mysql_query(mysql, CREATE_SAMPLE_TABLE))

{

fprintf(stderr, " CREATE TABLE failed\n");

fprintf(stderr, " %s\n", mysql_error(mysql));

exit(0);

}

/* Prepare an INSERT query with 3 parameters */

/* (the TIMESTAMP column is not named; the server */

/* sets it to the current date and time) */

stmt = mysql_stmt_init(mysql);

if (!stmt)

{

fprintf(stderr, " mysql_stmt_init(), out of memory\n");

exit(0);

}

if (mysql_stmt_prepare(stmt, INSERT_SAMPLE, strlen(INSERT_SAMPLE)))

{

fprintf(stderr, " mysql_stmt_prepare(), INSERT failed\n");

fprintf(stderr, " %s\n", mysql_stmt_error(stmt));

exit(0);

}

fprintf(stdout, " prepare, INSERT successful\n");

/* Get the parameter count from the statement */

param_count= mysql_stmt_param_count(stmt);

fprintf(stdout, " total parameters in INSERT: %d\n", param_count);

if (param_count != 3) /* validate parameter count */

{

fprintf(stderr, " invalid parameter count returned by MySQL\n");

exit(0);

}

/* Bind the data for all 3 parameters */

memset(bind, 0, sizeof(bind));

/* INTEGER PARAM */

/* This is a number type, so there is no need to specify buffer_length */

bind[0].buffer_type= MYSQL_TYPE_LONG;

bind[0].buffer= (char *)&int_data;

bind[0].is_null= 0;

bind[0].length= 0;

/* STRING PARAM */

bind[1].buffer_type= MYSQL_TYPE_STRING;

bind[1].buffer= (char *)str_data;

bind[1].buffer_length= STRING_SIZE;

bind[1].is_null= 0;

bind[1].length= &str_length;

/* SMALLINT PARAM */

bind[2].buffer_type= MYSQL_TYPE_SHORT;

bind[2].buffer= (char *)&small_data;

bind[2].is_null= &is_null;

bind[2].length= 0;

/* Bind the buffers */

if (mysql_stmt_bind_param(stmt, bind))

{

fprintf(stderr, " mysql_stmt_bind_param() failed\n");

fprintf(stderr, " %s\n", mysql_stmt_error(stmt));

exit(0);

}

/* Specify the data values for the first row */

int_data= 10; /* integer */

strncpy(str_data, "MySQL", STRING_SIZE); /* string */

str_length= strlen(str_data);

/* INSERT SMALLINT data as NULL */

is_null= 1;

/* Execute the INSERT statement - 1*/

if (mysql_stmt_execute(stmt))

{

fprintf(stderr, " mysql_stmt_execute(), 1 failed\n");

fprintf(stderr, " %s\n", mysql_stmt_error(stmt));

exit(0);

}

/* Get the total number of affected rows */

affected_rows= mysql_stmt_affected_rows(stmt);

fprintf(stdout, " total affected rows(insert 1): %lu\n",

(unsigned long) affected_rows);

if (affected_rows != 1) /* validate affected rows */

{

fprintf(stderr, " invalid affected rows by MySQL\n");

exit(0);

}

/* Specify data values for second row, then re-execute the statement */

int_data= 1000;

strncpy(str_data, "The most popular Open Source database", STRING_SIZE);

str_length= strlen(str_data);

small_data= 1000; /* smallint */

is_null= 0; /* reset */

/* Execute the INSERT statement - 2*/

if (mysql_stmt_execute(stmt))

{

fprintf(stderr, " mysql_stmt_execute, 2 failed\n");

fprintf(stderr, " %s\n", mysql_stmt_error(stmt));

exit(0);

}

/* Get the total rows affected */

affected_rows= mysql_stmt_affected_rows(stmt);

fprintf(stdout, " total affected rows(insert 2): %lu\n",

(unsigned long) affected_rows);

if (affected_rows != 1) /* validate affected rows */

{

fprintf(stderr, " invalid affected rows by MySQL\n");

exit(0);

}

/* Close the statement */

if (mysql_stmt_close(stmt))

{

fprintf(stderr, " failed while closing the statement\n");

fprintf(stderr, " %s\n", mysql_stmt_error(stmt));

exit(0);

}