cout<<min(RMQ[a][k],RMQ[b-(1<<k)+1][k])<<endl; } }
}intrmqmin(intl,intr) {intk =int( log(double(r-l+1)) / log(2.0) );intpart = r - (1<<k) +1;if(a[ st1[l][k] ] < a[ st1[part][k] ])returnst1[l][k];returnst1[part][k]; }intrmqmax(intl,intr) {intk =int( log(double(r-l+1)) / log(2.0) );intpart = r -...
所以在Grafana发起的查询中step参数是动态的。其实这也是很合理的,因为只有这样才能够在Graph宽度小的时候绘图更粗糙(即step更大),Graph宽度大的时候绘图更精细(即step更小,但是不能小于min step)。实际发起的请求的step参数你可以在Graph的Query Inspector里看到: 但是我们之前不说过了rate()的range duration不能小于...
That is, we want to find query(l, r)=arg minl≤i≤r(A[i])query(l, r)=arg minl≤i≤r(A[i]). If there are more than one such indices, we can answer any of them. I would like to thank tfg for showing me this algorithm. If you have read about it somewhere, please share...
当SQL 中存在 in 谓词,并且执行计划选择了 in 谓词相关的索引,进行了 query range 抽取,可能出现查询结果错的问题。 IN 优化引入的正确性问题的规避方式 遇到in 谓词 query range 抽取相关的正确性问题时,可以尝试通过以下方法进行规避。 将in 表达式改成等价的 or 表达式,例如c1 in ('1','2') => (c1 =...
The RangeMin function can be used inSELECT DISTINCT FROM <model > (DMX)queries. When used with this type of query, the scalar column reference can contain continuous or discrete columns that are either predictable or input. When used withSELECT FROM <model> PREDICTION JOIN (DMX), the Range...
inline int minV(int x, int y) { return x < y ? x : y; } inline void pushUp(int *segTree, int rt) { segTree[rt] = minV(segTree[LC(rt)], segTree[RC(rt)]); } int RMQUtil(int *segTree, int qs, int qe, int l, int r, int rt) ...
//这里FOOTER_SIZE是一个常量,为1024*100 int64_t footer_size = min(FOOTER_SIZE, files[i]->file_length); int64_t footer_start = files[i]->file_length - footer_size; ScanRange* footer_split = FindFooterSplit(files[i]); for (int j = 0; j < files[i]->splits.size(); ++j) {...
所以在Grafana发起的查询中step参数是动态的。其实这也是很合理的,因为只有这样才能够在Graph宽度小的时候绘图更粗糙(即step更大),Graph宽度大的时候绘图更精细(即step更小,但是不能小于min step)。实际发起的请求的step参数你可以在Graph的Query Inspector里看到: ...
int query(int a,int b,bool getwhat)//getwhat表示你是想取最大还是最小 { int k = log2(b-a+1); if(getwhat) return max(maxn[a][k],maxn[b-(1<<k)+1][k]); else return min(minn[a][k],minn[b-(1<<k)+1][k]); } 分类: 算法设计 好文要顶 关注我 收藏该...