# How to distinguish ”true“ from true（they are all Booleans） **URL:** \ **Category:** Elasticsearch\ **Created:** [October 26, 2021, 10:18am UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676 "2021-10-26T10:18:04Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![casterQ](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/casterq/32/93257_2.png) [@casterQ](https://discuss.elastic.co/u/casterQ)\ **Post date:** [October 26, 2021, 10:18am UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676/1 "2021-10-26T10:18:04Z")
v: 7.10.2 There are some docs in index such as {"tag":"true"} {"tag":true}，the tag is boolean type ...... i want to find out docs with tag==”true“，i tried script query use instanceof but it didn't work ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [October 26, 2021, 12:20pm UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676/2 "2021-10-26T12:20:51Z")
Not sure you can. But what is the problem you want to solve by doing this? > [@casterQ](#): > > v: 7.10.2 Please upgrade. 7.15.1 has been released. ---
**Author:** ![casterQ](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/casterq/32/93257_2.png) [@casterQ](https://discuss.elastic.co/u/casterQ)\ **Post date:** [October 26, 2021, 12:30pm UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676/3 "2021-10-26T12:30:38Z")
Thank you for your reply！ I just want to find out how many docs has "true" （not true）in index and then change them to true，the update pipeline is ready，but i can't judge if all ”true“ has been changed to true。 By the way，a coordinating node has off-heap OOM and been killed by kernel:OOM killer, Do you have any suggestions？thanks a lot。 ---
**Author:** ![casterQ](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/casterq/32/93257_2.png) [@casterQ](https://discuss.elastic.co/u/casterQ)\ **Post date:** [October 28, 2021, 1:25am UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676/4 "2021-10-28T01:25:07Z")
Are you there？ ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [October 28, 2021, 5:10am UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676/5 "2021-10-28T05:10:37Z")
But why do you need this? Is there any problem of having `true` or `"true"` in the `_source`? As I said, I don't know how you could do this. For the other question, please open a new discussion as it's unrelated. ---
**Author:** ![stephenb](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/stephenb/32/40856_2.png) [@stephenb](https://discuss.elastic.co/u/stephenb)\ **Post date:** [October 28, 2021, 5:16am UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676/6 "2021-10-28T05:16:33Z")
What is important is the mapping of the actual field Do you have it mapped as a `boolean` or as a `text` or `keyword`. The `_source` is really irrelevant ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 25, 2021, 5:17am UTC](https://discuss.elastic.co/t/how-to-distinguish-true-from-true-they-are-all-booleans/287676/7 "2021-11-25T05:17:03Z")
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