# Example thing group queries
<a name="example-thinggroup-queries"></a>

Queries are specified in a query string using a query syntax and passed to the [https://docs.amazonaws.cn/iot/latest/apireference/API_SearchIndex.html](https://docs.amazonaws.cn/iot/latest/apireference/API_SearchIndex.html) API. The following table lists some example query strings.


| Query string | Result | 
| --- | --- | 
|  abc  | Queries for "abc" in any field. | 
|  thingGroupName:myGroupThingName  | Queries for a thing group with name "myGroupThingName". | 
|  thingGroupName:my\*  | Queries for thing groups with names that begin with "my". | 
|  thingGroupName:ab?  | Queries for thing groups with names that have "ab" plus one additional character (for example: "aba", "abb", "abc", and so on). | 
|  attributes.myAttribute:75  | Queries for thing groups with an attribute named "myAttribute" that has the value 75. | 
|  attributes.myAttribute:[75 TO 80]  | Queries for thing groups with an attribute named "myAttribute" whose value falls within a numeric range (75–80, inclusive). | 
|  attributes.myAttribute:[75 TO 80]  | Queries for thing groups with an attribute named "myAttribute" whose value falls within the numeric range (>75 and <=80). | 
|  attributes.myAttribute:["abcd" TO "abcf"]  | Queries for thing groups with an attribute named "myAttribute" whose value is within an alphanumeric string range. This query returns thing groups with a "serialNumber" attribute with values "abcd", "abce", or "abcf". | 
|  attributes.myAttribute:i\*t  | Queries for thing groups with an attribute named "myAttribute" whose value is 'i', followed by any number of characters, followed by 't'. | 
|  attributes.attr1:abc AND attributes.attr2<5 NOT attributes.attr3>10  | Queries for thing groups that combine terms using Boolean expressions. This query returns thing groups that have an attribute named "attr1" with a value "abc", an attribute named "attr2" that's less than 5, and an attribute named "attr3" that's not greater than 10. | 
|  NOT attributes.myAttribute:cde  | Queries for thing groups where the attribute named "myAttribute" is not "cde". | 
|  parentGroupNames:(myParentThingGroupName)  |  Queries for thing groups whose parent group name matches "myParentThingGroupName". | 
|  parentGroupNames:(myParentThingGroupName OR myRootThingGroupName)  | Queries for thing groups whose parent group name matches "myParentThingGroupName" or "myRootThingGroupName". | 
|  parentGroupNames:(myParentThingGroupNa\*)  | Queries for thing groups whose parent group name begins with "myParentThingGroupNa". |