在SQlite中逐行删除值

Question

如何使用SQlite从其中Login = Mike的表客户端中删除值'For you'（message_to）？

#include <stdio.h>
#include <stdlib.h>

typedef struct ll {
    int val;
    struct ll *next;
} ll_t;

void copylist(ll_t* list, int* array, int length) {
    int i;
    for (i = 0; i < length; i++) {
        array[i] = list->val;
        list = list->next;
    }
}

int main() {
    ll_t *list = NULL;
    int *array = NULL;
    list = malloc(sizeof (ll_t));
    list->val = 1;
    list->next = NULL;

    ll_t *add1 = NULL;
    add1 = malloc(sizeof (ll_t));
    add1->val = 2;
    add1->next = NULL;
    list->next = add1;
    int j;
    copylist(list, array, 2);
    for (j = 0; j < 2; j++) {
        printf("the content of array is: %d\n", array[j]);
    }
    return 1;
}

Answer 1

update clients
set message_to=null
where login='Mike'