Question

我有一张这样的桌子：

IntPoint.newRangeQuery(String field, int lowerValue, int upperValue)

我想在连续的行中找到最小值和最大值，其输出应如下所示：

function createGrid(size) {
  document.styleSheets[0].cssRules[3].style["grid-template-columns"] = "repeat(" + size + ", 1fr)"
  document.styleSheets[0].cssRules[3].style["grid-template-rows"] = "repeat(" + size + ", 1fr)"
  console.log('createGrid');
  for (i = 0; i < size*size; i++) { 
    const grid = document.createElement('div');
    grid.classList.add('grid');
    grid.style.cssText = 'color: #cccccc; background: #cccccc; border: solid 1px lightgrey;';      
    screen.appendChild(grid);

    // Add listener to grid cell
    grid.addEventListener('mouseover', (e) => {
       e.target.style.background = '#0d0d0d';
    })
  }
}

有人可以帮我吗？

Answer 1

假设您有id列，它定义了consecutive rows，那么您可以

 with t  (id,  name  , value ) as (
 values
    (1, 'alpha',90), 
    (2, 'beta',105), 
    (3,'beta',44), 
    (4,'beta',56), 
    (5,'gamma',22), 
    (6,'beta',111), 
    (7,'beta',99)
  )

  select name,   min(value), max(value) from (
    select  id,  name, value, 
    row_number() over(order  by id)   -
    row_number() over(partition by name   order  by id) as grp
    from t
  ) tt
  group by name, grp
  order by min(id)

演示：https://rextester.com/JUDP87693

在连续的行中找到最小值/最大值

1 个答案: