Document max identifier length (#1077)

Author: JPryce-Aklundh

modules/ROOT/pages/appendix/gql-conformance/index.adoc

@@ -1,8 +1,8 @@
 :description: Overview of Cypher's conformance to GQL.
 = GQL conformance
 
-*Last updated*: 13 September 2024 +
-*Neo4j version*: 5.24
+*Last updated*: 24 October 2024 +
+*Neo4j version*: 5.25
 
 GQL is the new link:https://www.iso.org/home.html[ISO] International Standard query language for graph databases.
 

modules/ROOT/pages/appendix/gql-conformance/supported-optional.adoc

@@ -93,6 +93,11 @@ These codes order the features in the table below.
 | xref:patterns/reference.adoc#graph-patterns-rules-variable-references[Graph patterns -> Rules]
 |
 
+| GB01
+| Long identifiers
+| xref:syntax/naming.adoc#identifier-length-limit[Naming rules and recommendations -> Identifier length limit]
+|
+
 | GF01
 | Enhanced numeric functions
 | xref:functions/mathematical-numeric.adoc#functions-abs[`abs()`], xref:functions/mathematical-numeric.adoc#functions-floor[`floor()`], xref:functions/mathematical-logarithmic.adoc#functions-sqrt[`sqrt()`].

modules/ROOT/pages/deprecations-additions-removals-compatibility.adoc

@@ -36,6 +36,27 @@ CREATE DATABASE db OPTIONS { existingDataSeedInstance: ... }
 | The `CREATE DATABASE` option `existingDataSeedInstance` has been deprecated and replaced with the option link:{neo4j-docs-base-uri}/operations-manual/{page-version}/database-administration/standard-databases/create-database/#manage-databases-create-database-options[`existingDataSeedServer`]. The functionality is unchanged.
 |===
 
+=== Updated features
+
+[cols="2", options="header"]
+|===
+| Feature
+| Details
+
+a|
+label:functionality[]
+label:updated[]
+[source, cypher, role="noheader"]
+----
+CREATE (n:Label {property: 'name'}, 
+()-[r:REL_TYPE]->()
+----
+| Neo4j's link:{neo4j-docs-base-uri}/operations-manual/{page-version}/database-internals/store-formats/#store-format-overview[block format] now implements xref:appendix/gql-conformance/index.adoc[GQL's] limit on the maximum length of identifiers.
+
+The maximum limit is set to 16,383 characters in an identifier.
+This means that node labels, relationship types, and property keys cannot include more than 16,383 characters.
+|===
+
 === New features
 
 [cols="2", options="header"]
@@ -53,8 +74,6 @@ CREATE DATABASE db OPTIONS { existingDataSeedServer: ... }
 | The option link:{neo4j-docs-base-uri}/operations-manual/{page-version}/database-administration/standard-databases/create-database/#manage-databases-create-database-options[`existingDataSeedServer`] has been added to `CREATE DATABASE`. The functionality is the same as the deprecated option `existingDataSeedServer`, which this replaces.
 |===
 
-
-
 [[cypher-deprecations-additions-removals-5.24]]
 == Neo4j 5.24
 

modules/ROOT/pages/syntax/naming.adoc

@@ -71,3 +71,11 @@ Here are the recommended naming conventions:
 | Relationship types   | Upper-case, using underscore to separate words     | `:OWNS_VEHICLE` rather than `:ownsVehicle` etc.
 |===
 
+[role=label--new-5.25]
+[[identifier-length-limit]]
+== Length limit of identifiers
+
+Neo4j's link:{neo4j-docs-base-uri}/operations-manual/{page-version}/database-internals/store-formats/#store-format-overview[block format] implements xref:appendix/gql-conformance/index.adoc[GQL's] limit on the maximum length of identifiers.
+
+The maximum limit is set to 16,383 characters in an identifier.
+This means that node labels, relationship types, and property keys cannot include more than 16,383 characters.