```yaml
in:
{% include 'conn' %}
{% include 'query' %}
out:
  type: stdout

```

_conn.yml.liquid

```yaml
# dummy
  type: postgresql
  host: 127.0.0.1
  user: user
  password: pass
  database: embulk_test
```

_query.yml.liquid

```yaml
# dummy
  query: "select * from auto_inc_test"
```

## dummyがない場合

```
embulk preview -G config4.yml.liquid
2016-07-05 20:58:18.816 +0900: Embulk v0.8.9
mapping values are not allowed here
 in 'string', line 9, column 10:
        query: "select * from auto_inc_test"
             ^

	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchValue(org/yaml/snakeyaml/scanner/ScannerImpl.java:871)
	at org.yaml.snakeyaml.scanner.ScannerImpl.fetchMoreTokens(org/yaml/snakeyaml/scanner/ScannerImpl.java:360)
	at org.yaml.snakeyaml.scanner.ScannerImpl.checkToken(org/yaml/snakeyaml/scanner/ScannerImpl.java:226)
	at org.yaml.snakeyaml.parser.ParserImpl$ParseBlockMappingKey.produce(org/yaml/snakeyaml/parser/ParserImpl.java:558)
	at org.yaml.snakeyaml.parser.ParserImpl.peekEvent(org/yaml/snakeyaml/parser/ParserImpl.java:158)
	at org.yaml.snakeyaml.parser.ParserImpl.checkEvent(org/yaml/snakeyaml/parser/ParserImpl.java:143)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(org/yaml/snakeyaml/composer/Composer.java:226)
	at org.yaml.snakeyaml.composer.Composer.composeNode(org/yaml/snakeyaml/composer/Composer.java:155)
	at org.yaml.snakeyaml.composer.Composer.composeMappingNode(org/yaml/snakeyaml/composer/Composer.java:231)
	at org.yaml.snakeyaml.composer.Composer.composeNode(org/yaml/snakeyaml/composer/Composer.java:155)
	at org.yaml.snakeyaml.composer.Composer.composeDocument(org/yaml/snakeyaml/composer/Composer.java:122)
	at org.yaml.snakeyaml.composer.Composer.getSingleNode(org/yaml/snakeyaml/composer/Composer.java:105)
	at org.yaml.snakeyaml.constructor.BaseConstructor.getSingleData(org/yaml/snakeyaml/constructor/BaseConstructor.java:120)
	at org.yaml.snakeyaml.Yaml.loadFromReader(org/yaml/snakeyaml/Yaml.java:481)
	at org.yaml.snakeyaml.Yaml.load(org/yaml/snakeyaml/Yaml.java:400)
	at org.embulk.config.ConfigLoader.fromYamlString(org/embulk/config/ConfigLoader.java:66)
	at java.lang.reflect.Method.invoke(java/lang/reflect/Method.java:498)
	at RUBY.read_config(/Users/hsato/.embulk/bin/embulk!/embulk/runner.rb:129)
	at RUBY.preview(/Users/hsato/.embulk/bin/embulk!/embulk/runner.rb:32)
	at RUBY.run(/Users/hsato/.embulk/bin/embulk!/embulk/command/embulk_run.rb:304)
	at RUBY.<top>(/Users/hsato/.embulk/bin/embulk!/embulk/command/embulk_main.rb:2)
	at org.jruby.RubyKernel.require(org/jruby/RubyKernel.java:937)
	at RUBY.(root)(uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/rubygems/core_ext/kernel_require.rb:1)
	at Users.hsato.$_dot_embulk.bin.embulk.embulk.command.embulk_bundle.<top>(file:/Users/hsato/.embulk/bin/embulk!/embulk/command/embulk_bundle.rb:51)
	at java.lang.invoke.MethodHandle.invokeWithArguments(java/lang/invoke/MethodHandle.java:627)
	at org.embulk.cli.Main.main(org/embulk/cli/Main.java:23)

Error: mapping values are not allowed here
 in 'string', line 9, column 10:
        query: "select * from auto_inc_test"
             ^
```


```