Use PostgreSQL LIKE % wildcards with RDS Data API?

Question

I'm using RDS Aurora Serverless with PostgreSQL compatibility. I'm trying to write a query that uses the [PostgreSQL LIKE clause](https://www.tutorialspoint.com/postgresql/postgresql_like_clause.htm) with percentage signs as wildcard operators. This is what I'm using right now:

```
SELECT * FROM products WHERE name LIKE '%:productName%'
```

and the productName gets passed into the RDS Data API through a `stringValue` field parameter (since it comes from user input).

```
{ name: 'productName', value: { stringValue: variableFromUserInput } }
```

This doesn't seem to be working since my query always succeeds but returns no results. Is this use case supported with the RDS Data API and am I using this correctly?

Accepted Answer

A parameter inside the quoted value like that doesn't look right. I haven't used this API... but I have used many analogous ones.

Try a test like this:

```
SELECT * FROM products WHERE name LIKE '%' || :productName || '%'
```

That's a more typical way to reference your parameter.

Use PostgreSQL LIKE % wildcards with RDS Data API?

Contenido relevante