Question: I would like to get all the fields in a database, `information_schema` is not available.

However, I can show the fields of a single table using

`show columns from table`

How can I add another show command?
I tried `UNION`, but it gives me syntax error.

Answer: 
Depending on the [browser support](https://developer.mozilla.org/en/docs/Web/CSS/clip-path#Browser_compatibility) needed, You can use clip-path:

```css
#trapezoid {
  background: url(https://upload.wikimedia.org/wikipedia/commons/8/83/Jho_Arce_User_Profile_Image.jpg) no-repeat;
  background-size: cover;
  height: 100px;
  width: 200px;
  margin: auto;
  -webkit-clip-path: polygon(100% 0, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0 0);
  clip-path: polygon(100% 0, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0 0)
}

body {
  background: silver;
}
```

```html
<div id="trapezoid"></div>
```
I think this will do the trick. Hope it will works for you.

```css
.main-box{
  background:#ddd;
  width:300px;
  height:100px;
  display:inline-block;
  position:relative;
  text-align:center;
}
.main-box:after{
  content:'';
  width: 0;
  height: 0;
  border-bottom: 70px solid #999;
  border-right: 70px solid transparent;
  position:absolute;
  left:0;
  bottom:0;
}
.main-box:before{
  content:'';
  width: 0;
  height: 0;
  border-bottom: 70px solid #999;
  border-left: 70px solid transparent;
  position:absolute;
  right:0;
  bottom:0;
}
```

```html
<div class="main-box"> #trial</div>
```