c++ - 'CREATE' 附近偏移量 8 处的 RedisGraph 语法错误

Question

我在我的 C++ 代码中使用 hiredis 库来执行 RedisGraph 命令。当我尝试在 C++ 代码中执行“创建”命令时，它会抛出错误，但是当我在命令行中执行完全相同的命令时，它工作正常。这是怎么回事？也许我做错了什么？ Redis 服务器版本是 4.0.9，这是我在 C++ 中的代码:

#include <iostream>
#include <cstdint>
#include <cstring>
#include <hiredis.h>
using namespace std;
int main(int argc, char** argv) {
    unsigned int j, isunix = 0;
    redisContext *c;
    redisReply *reply;
    const char *hostname = (argc > 1) ? argv[1] : "127.0.0.1";
    int port = (argc > 2) ? atoi(argv[2]) : 6379;
    struct timeval timeout = { 1, 500000 }; // 1.5 seconds
    if (isunix) {
        c = redisConnectUnixWithTimeout(hostname, timeout);
    } else {
        c = redisConnectWithTimeout(hostname, port, timeout);
    }
    if (c == NULL || c->err) {
        if (c) {
            printf("Connection error: %s\n", c->errstr);
            redisFree(c);
        } else {
            printf("Connection error: can't allocate redis context\n");
        }
    }
    const char * destPtr = "GRAPH.QUERY Project \"CREATE (:User {userId:9})\"";
    std::cout<<destPtr<<std::endl;
    reply = (redisReply *)redisCommand(c,destPtr);
    //
    printf(reply->str);
   freeReplyObject(reply);
    return 0;
}

它抛出这个错误:

Syntax error at offset 8 near 'CREATE'

Answer 1

没试过，但值得一试:

reply = (redisReply *)redisCommand(c, "GRAPH.QUERY key:%s %s", "Project", "CREATE (:User {userId:9})");

https://github.com/redis/hiredis#sending-commands