Question

我有一张表Employee，其中包含以下示例数据

ID   Name   Gender
1    Mary   F
2    John   M
3    Smith  M

我想写一个更新查询，将性别设置为性别为F的{{1}}，并将性别设置为性别为M的{{1}}。如何在单M个查询中执行此操作？

Answer 1

我们可以使用.streamContainer { background: blue; bottom: 0; box-sizing: border-box; height: calc(100% - 120px); position: absolute; transition: height 0.5s; width: 80%; } .streamRatio { background: red; box-sizing: border-box; display: block; height: 0; padding: 56.25% 0 0 0; position: absolute; top: 50%; transform: translateY(-50%); width: 100%; } .streamInner { background: green; bottom: 0; height: 100%; left: 0; right: 0; position: absolute; top: 0; }表达式进行更新。

<强>查询

<div class="streamContainer">
  <div class="streamRatio">
    <div class="streamInner">
      Content Goes Here
    </div>
  </div>
</div>

Answer 2

您只需使用tessBaseAPI.setPageSegMode(TessBaseAPI.PageSegMode.PSM_SPARSE_TEXT);：

{
"$schema": "http://json-schema.org/draft-04/schema#",
"title": "QuestionsModel",
"type": "array",
"items": {
    "type": "object",
    "properties": {
        "section_name": { "type": "string" },
        "options" : { "type" : "array",
                      "items" : {
                          "type" : "object",
                          "properties" : {
                              "awshack" : {
                                  "type" : "array",
                                  "items" : { "type" : "string" }
                              }
                          }
                    }

        }
    }
}
}

Answer 3

用例何时更新

update employee set Gender=(case when Gender='F' then 'M' else 'f' end)
where gender in ('M','F')

更新同一列

3 个答案: