I am using MS SQLServer and trying to insert a month/year combination to a table like this:

```
INSERT INTO MyTable VALUES (1111, 'item_name', '9/1998')

```

apparently, the above command cannot work since

```
Conversion failed when converting date and/or time from character string.

```

Because `9/1998` is a bad format. I want to fix this and this column of the table will show something like:

```
9/1998
12/1998
(other records with month/year format) 
...

```

Can someone help me with this? 

thank you