zclllyybb commented on code in PR #3220:
URL: https://github.com/apache/doris-website/pull/3220#discussion_r2749184178
##########
docs/sql-manual/sql-functions/scalar-functions/map-functions/map-concat.md:
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@@ -0,0 +1,168 @@
+---
+{
+ "title": "MAP_CONCAT",
+ "language": "en"
+}
+---
+
+## Description
+
+Concatenates multiple maps into a single map. When concatenating maps with
different key or value types, the function finds common types for keys and
values.
+
+:::info Note
+Supported since Apache Doris 4.0.4.
Review Comment:
don't add this for dev docs
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