"avg(s.id[1])",
		"coalesce(s.id[1], 2, 2 + 3)",

		"cast(s as string)",
		"cast(s AS INT)",
		"cast(s as DECIMAL)",
		"extract(YEAR from '2018-01-09')",
		"extract(month from '2018-01-09')",

		"extract(hour from '2018-01-09')",
		"extract(day from '2018-01-09')",
		"substring('abcd' from 2 for 2)",
		"substring('abcd' from 2)",
		"substring('abcd' , 2 , 2)",

		"substring('abcd' , 22 )",

2018/12/26 17:49:36 listening on http://localhost:8080/
```

> NOTE: for a reasonable test outcome, make sure the assumed user has at least permission/policy to list all buckets. That policy would look like below:

```
{
  "version": "2012-10-17",
  "statement": [
    {
      "effect": "Allow",
      "action": [

go run client-grants.go -cid PoEgXP6uVO45IsENRngDXj5Au5Ya -csec eKsw6z8CtOJVBtrOWvhRWL4TUCga

##### Credentials
{
 "accessKey": "IRBLVDGN5QGMDCMO1X8V",
 "secretKey": "KzS3UZKE7xqNdtRbKyfcWgxBS6P1G4kwZn4DXKuY",
 "expiration": "2018-08-21T15:49:38-07:00",

go run client-grants.go -cid PoEgXP6uVO45IsENRngDXj5Au5Ya -csec eKsw6z8CtOJVBtrOWvhRWL4TUCga

##### Credentials
{
 "accessKey": "IRBLVDGN5QGMDCMO1X8V",
 "secretKey": "KzS3UZKE7xqNdtRbKyfcWgxBS6P1G4kwZn4DXKuY",
 "expiration": "2018-08-21T15:49:38-07:00",

	rulesCase4 := make(Rules)
	rulesCase4.Add(NewPattern("2010*", ""), TargetID{"1", "webhook"})
	rules2Case4 := make(Rules)
	rules2Case4.Add(NewPattern("2010*", ""), TargetID{"1", "webhook"})
	expectedResultCase4 := make(Rules)
	expectedResultCase4.Add(NewPattern("2010*", ""), TargetID{"1", "webhook"})

	rulesCase5 := make(Rules)
	rulesCase5.Add(NewPattern("2010*", ""), TargetID{"1", "webhook"})

n:TopLocksInfo","admin:OBDInfo","admin:BandwidthMonitor"],"Resource":["arn:aws:s3:::*"]}]},"readonly":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:GetBucketLocation","s3:GetObject"],"Resource":["arn:aws:s3:::*"]}]},"readwrite":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:*"],"Resource":["arn:aws:s3:::*"]}]},"writeonly":{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:PutObject"],"Resource":["arn:aws:s3:::*"]}]}}`,

		//...

    _ETREE_EXCEPTIONS = (ParseError, AttributeError, ValueError, TypeError)
else:
    _ETREE_EXCEPTIONS = (SyntaxError, AttributeError, ValueError, TypeError)

_STS_NS = {'sts': 'https://sts.amazonaws.com/doc/2011-06-15/'}


class STSElement(object):
    """STS aware XML parsing class. Wraps a root element name and
    cElementTree.Element instance. Provides STS namespace aware parsing
    functions.

    """

            query = {}
            query['Action'] = 'AssumeRoleWithClientGrants'
            query['Token'] = creds['access_token']
            query['DurationSeconds'] = creds['expires_in']
            query['Version'] = '2011-06-15'

            query_components = []
            for key in query:
                if query[key] is not None:
                    query_components.append("%s=%s" % (key, query[key]))

custom commands {{- range .Values.customCommands }} runCommand {{ .command }} {{- end }} {{- end }} minio/templates/_helper_policy.tpl {{- $statements_length := len .statements -}} {{- $statements_length := sub $statements_length 1 -}} { "Version": "2012-10-17", "Statement": [ {{- range $i, $statement := .statements }} { "Effect": "Allow", "Action": [ "{{ $statement.actions | join "\",\n\"" }}" ]{{ if $statement.resources }}, "Resource": [ "{{ $statement.resources | join "\",\n\"" }}" ]{{ end }} }{{...

custom commands {{- range .Values.customCommands }} runCommand {{ .command }} {{- end }} {{- end }} minio/templates/_helper_policy.tpl {{- $statements_length := len .statements -}} {{- $statements_length := sub $statements_length 1 -}} { "Version": "2012-10-17", "Statement": [ {{- range $i, $statement := .statements }} { "Effect": "Allow", "Action": [ "{{ $statement.actions | join "\",\n\"" }}" ]{{ if $statement.resources }}, "Resource": [ "{{ $statement.resources | join "\",\n\"" }}" ]{{ end }} }{{...