PSQL to DSQL

.zshrc

function dsql {
    local auth_token
    auth_token=$(aws dsql generate-db-connect-admin-auth-token \
        --region us-east-1 \
        --expires-in 3600 \
        --hostname CLUSTER_ENDPOINT_URL) || { echo "Failed to generate auth token" >&2; return 1; }

    if [ -z "$auth_token" ]; then
        echo "Auth token is empty" >&2
        return 1
    fi

    PGPASSWORD="$auth_token" PGSSLMODE=require psql \
        --dbname postgres \
        --username admin \
        --host CLUSTER_ENDPOINT_URL
}

Throw this in your ~/.zshrc (or relevant shell config file) to easily connect to your DSQL instance with PSQL. It will grab an authentication token and use that to connect.

Be sure to replace 'CLUSTER_ENDPOINT_URL' with your actual endpoint URL.

If you need a certain AWS profile, set AWS_PROFILE= before aws dsql ... on line 3.

Adopted from the SQL client connection docs page here.