Cypher 25 show commands updates (#1090)

* Update createStatement for key constraints
* Add optional keyword `PROPERTY` for `SHOW [NODE | REL[ATIONSHIP]]
[PROPERTY] UNIQUE[NESS] CONSTRAINTS` filtering
* Update return type and default values for some columns for `SHOW
TRANSACTIONS`

---------

Co-authored-by: Jens Pryce-Åklundh <[email protected]>

Author: Hunterness

modules/ROOT/pages/clauses/transaction-clauses.adoc

@@ -34,28 +34,28 @@ a| The transaction ID. label:default-output[]
 m| STRING
 
 m| currentQueryId
-a| The ID of the query currently executing in this transaction, or an empty `STRING` if no query is currently executing. label:default-output[]
+a| The ID of the query currently executing in this transaction, or `null` if no query is currently executing. label:default-output[]
 m| STRING
 
 m| connectionId
 a| The ID of the database connection attached to the transaction or an empty `STRING` for embedded connections. label:default-output[]
 m| STRING
 
 m| clientAddress
-a| The client address of the connection issuing the transaction or an empty `STRING` if unavailable. label:default-output[]
+a| The client address of the connection issuing the transaction or `null` if unavailable. label:default-output[]
 m| STRING
 
 m| username
 a| The username of the user executing the transaction. label:default-output[]
 m| STRING
 
 m| currentQuery
-a| The query text of the query currently executing in this transaction, or an empty `STRING` if no query is currently executing. label:default-output[]
+a| The query text of the query currently executing in this transaction, or `null` if no query is currently executing. label:default-output[]
 m| STRING
 
 m| startTime
 a| The time at which the transaction was started. label:default-output[]
-m| STRING
+m| ZONED DATETIME
 
 m| status
 a| The current status of the transaction (`Terminated`, `Blocked`, `Closing`, or `Running`). label:default-output[]
@@ -67,7 +67,7 @@ m| DURATION
 
 m| outerTransactionId
 a|
-The ID of this transaction's outer transaction, if such exists, otherwise an empty `STRING`.
+The ID of this transaction's outer transaction, if such exists, otherwise `null`.
 For details, see xref:subqueries/subqueries-in-transactions.adoc[`CALL { ... } IN TRANSACTIONS`].
 m| STRING
 
@@ -76,27 +76,28 @@ a| Any metadata associated with the transaction, or an empty map if there is non
 m| MAP
 
 m| parameters
-a| A map containing all the parameters used by the query currently executing in this transaction, or an empty map if no query is currently executing.
+a| A map containing all the parameters used by the query currently executing in this transaction, or `null` if no query is currently executing.
 m| MAP
 
 m| planner
 a|
-The name of the Cypher planner used to plan the query currently executing in this transaction, or an empty `STRING` if no query is currently executing.
+The name of the Cypher planner used to plan the query currently executing in this transaction, or `null` if no query is currently executing.
 For details, see xref::planning-and-tuning/query-tuning.adoc#cypher-planner[Cypher planner].
 m| STRING
 
 m| runtime
-a| The name of the Cypher runtime used by the query currently executing in this transaction, or an empty `STRING` if no query is currently executing. For details, see xref::planning-and-tuning/runtimes/index.adoc[Cypher runtime].
+a| The name of the Cypher runtime used by the query currently executing in this transaction, or `null` if no query is currently executing.
+For details, see xref::planning-and-tuning/runtimes/index.adoc[Cypher runtime].
 m| STRING
 
 m| indexes
-a| The indexes utilised by the query currently executing in this transaction, or an empty list if no query is currently executing.
+a| The indexes utilised by the query currently executing in this transaction, or `null` if no query is currently executing.
 m| LIST<MAP>
 
 
 m| currentQueryStartTime
-a| The time at which the query currently executing in this transaction was started, or an empty `STRING` if no query is currently executing.
-m| STRING
+a| The time at which the query currently executing in this transaction was started, or `null` if no query is currently executing.
+m| ZONED DATETIME
 
 m| protocol
 a|
@@ -111,7 +112,7 @@ m| STRING
 
 
 m| currentQueryStatus
-a| The current status of the query currently executing in this transaction (`parsing`, `planning`, `planned`, `running`, or `waiting`), or an empty `STRING` if no query is currently executing.
+a| The current status of the query currently executing in this transaction (`parsing`, `planning`, `planned`, `running`, or `waiting`), or `null` if no query is currently executing.
 m| STRING
 
 m| statusDetails
@@ -249,8 +250,8 @@ SHOW TRANSACTIONS
 |===
 | database | transactionId | currentQueryId | connectionId | clientAddress | username | currentQuery | startTime | status | elapsedTime
 
-| "neo4j" | "neo4j-transaction-6" | "query-664" | "" | "" | "" | "SHOW TRANSACTIONS" | "2022-06-14T10:02:45.568Z" | "Running" | PT0.038S
-| "neo4j" | "neo4j-transaction-4" | "query-663" | "" | "" | "" | "MATCH (n) RETURN n" | "2022-06-14T10:02:45.546Z" | "Running" | PT0.06S
+| "neo4j" | "neo4j-transaction-6" | "query-664" | "" | null | "" | "SHOW TRANSACTIONS" | "2022-06-14T10:02:45.568Z" | "Running" | PT0.038S
+| "neo4j" | "neo4j-transaction-4" | "query-663" | "" | null | "" | "MATCH (n) RETURN n" | "2022-06-14T10:02:45.546Z" | "Running" | PT0.06S
 
 10+d|Rows: 2
 |===
@@ -325,7 +326,7 @@ SHOW TRANSACTIONS "neo4j-transaction-3"
 |===
 | database | transactionId | currentQueryId | connectionId | clientAddress | username | currentQuery | startTime | status | elapsedTime
 
-| "neo4j" | "neo4j-transaction-3" | "query-1" | "" | "" | "" | "MATCH (n) RETURN n" | "2021-10-20T08:29:39.423Z" | "Running" | PT2.603S
+| "neo4j" | "neo4j-transaction-3" | "query-1" | "" | null | "" | "MATCH (n) RETURN n" | "2021-10-20T08:29:39.423Z" | "Running" | PT2.603S
 
 10+d|Rows: 1
 |===