From 5c1b726f6bdbaae1de67408580101f1194d58b06 Mon Sep 17 00:00:00 2001
From: Ayesha Firdaus <ayesha.firdaus@tigergraph.com>
Date: Sat, 20 Jun 2026 01:36:54 +0530
Subject: [PATCH] DOC-2742-open-cypher-4.2

---
 modules/openCypher-in-gsql/pages/index.adoc   |  6 ++++
 .../pages/func/datetime-functions.adoc        | 25 +++++++++++++++
 modules/querying/pages/func/edge-methods.adoc | 32 +++++++++++++++++++
 .../querying/pages/func/list-functions.adoc   | 32 +++++++++++++++++++
 .../pages/func/mathematical-functions.adoc    | 19 +++++++++++
 5 files changed, 114 insertions(+)

diff --git a/modules/openCypher-in-gsql/pages/index.adoc b/modules/openCypher-in-gsql/pages/index.adoc
index a7d6fb79..fa9a4c43 100644
--- a/modules/openCypher-in-gsql/pages/index.adoc
+++ b/modules/openCypher-in-gsql/pages/index.adoc
@@ -234,6 +234,12 @@ See below for restrictions before version *4.1.2*.
 |type() |Scalar |Returns the string representation of the relationship type.
 |===
 
+
+[NOTE]
+====
+All OpenCypher functions listed below can be used in GSQL mode, and all primitive GSQL functions can be used in OpenCypher mode.
+====
+
 === Expressions
 [cols="1,3"]
 |===
diff --git a/modules/querying/pages/func/datetime-functions.adoc b/modules/querying/pages/func/datetime-functions.adoc
index 1935b5e9..392faefe 100644
--- a/modules/querying/pages/func/datetime-functions.adoc
+++ b/modules/querying/pages/func/datetime-functions.adoc
@@ -218,6 +218,31 @@ Converts a `DATETIME` value to epoch time.
 datetime_to_epoch(to_datetime("1970-01-01 00:01:00")) -> 60
 ----
 
+== timestamp()
+
+=== Syntax
+
+`timestamp()`
+
+=== Description
+
+Returns the difference, measured in milliseconds, between the current time and midnight, January 1, 1970 UTC.
+
+=== Return type
+
+`INT`
+
+=== Parameters
+
+None.
+
+=== Example
+
+[source,text]
+----
+timestamp() -> 1609459200000
+----
+
 == `day()`
 
 [discrete]
diff --git a/modules/querying/pages/func/edge-methods.adoc b/modules/querying/pages/func/edge-methods.adoc
index 6d17dad3..b55ff91d 100644
--- a/modules/querying/pages/func/edge-methods.adoc
+++ b/modules/querying/pages/func/edge-methods.adoc
@@ -222,3 +222,35 @@ GSQL > run query elementId_example()
   ]
 }
 ----
+
+== type()
+
+=== Syntax
+
+`type(e)`
+
+=== Description
+
+Returns the string representation of the edge type.
+
+=== Return type
+
+`STRING`
+
+=== Parameters
+
+|===
+| Parameter | Description | Data type
+
+| `e`
+| The edge whose type will be returned.
+| `EDGE`
+
+|===
+
+=== Example
+
+[source,text]
+----
+type(e) -> "worksFor"
+----
\ No newline at end of file
diff --git a/modules/querying/pages/func/list-functions.adoc b/modules/querying/pages/func/list-functions.adoc
index 24afc468..c97a246f 100644
--- a/modules/querying/pages/func/list-functions.adoc
+++ b/modules/querying/pages/func/list-functions.adoc
@@ -200,3 +200,35 @@ split("aaabcaabca", "abc") -> ["aa", "a", "a"]
 ----
 tail(["a", "b", "c"]) -> ["b", "c"]
 ----
+
+== labels()
+
+=== Syntax
+
+`labels(vertex)`
+
+=== Description
+
+Returns a `LIST<STRING>` containing the string representation of the type of the given vertex.
+
+=== Return type
+
+`LIST<STRING>`
+
+=== Parameters
+
+|===
+| Parameter | Description | Data type
+
+| `vertex`
+| The vertex whose type will be returned.
+| `VERTEX`
+
+|===
+
+=== Example
+
+[source,text]
+----
+labels(v) -> ["person"]
+----
\ No newline at end of file
diff --git a/modules/querying/pages/func/mathematical-functions.adoc b/modules/querying/pages/func/mathematical-functions.adoc
index 6085ff4a..c2b86bd2 100644
--- a/modules/querying/pages/func/mathematical-functions.adoc
+++ b/modules/querying/pages/func/mathematical-functions.adoc
@@ -647,6 +647,25 @@ Return the common logarithm of a number (base 10).
 | Number
 |===
 
+== e()
+
+=== Syntax
+
+`e()`
+
+=== Description
+
+Returns the base of the natural logarithm, e (approximately 2.718281828459045).
+
+=== Return type
+
+`FLOAT`
+
+=== Parameters
+
+None.
+
+
 == Trigonometric
 
 === acos()