SHOW
Shows the software version, current session node, and tracing session details.
Shows this information depending on the options selected:
- Software version.
- Current session node.
- Tracing session details captured in the past 24 hours.
Synopsis
SHOW VERSION | HOST | SESSION tracing_session_id
Syntax conventions | Description |
---|---|
UPPERCASE | Literal keyword. |
Lowercase | Not literal. |
Italics |
Variable value. Replace with a user-defined value. |
[] |
Optional. Square brackets ( [] ) surround
optional command arguments. Do not type the square brackets. |
( ) |
Group. Parentheses ( ( ) ) identify a group to
choose from. Do not type the parentheses. |
| |
Or. A vertical bar ( | ) separates alternative
elements. Type any one of the elements. Do not type the vertical
bar. |
... |
Repeatable. An ellipsis ( ... ) indicates that
you can repeat the syntax element as often as required. |
'Literal string' |
Single quotation ( ' ) marks must surround
literal strings in CQL statements. Use single quotation marks to
preserve upper case. |
{ key : value
} |
Map collection. Braces ( { } ) enclose map
collections or key value pairs. A colon separates the key and the
value. |
<datatype1,datatype2> |
Set, list, map, or tuple. Angle brackets ( <
> ) enclose data types in a set, list, map, or tuple.
Separate the data types with a comma. |
cql_statement; |
End CQL statement. A semicolon ( ; ) terminates
all CQL statements. |
[--] |
Separate the command line options from the command arguments with
two hyphens ( -- ). This syntax is useful when
arguments might be mistaken for command line options. |
' <schema> ... </schema>
' |
Search CQL only: Single quotation marks ( ' )
surround an entire XML schema declaration. |
@xml_entity='xml_entity_type' |
Search CQL only: Identify the entity and literal value to overwrite the XML element in the schema and solrConfig files. |
- VERSION
- Show the version for cqlsh, the database, the CQL specification, and native protocol.
- HOST
- Show the node details for the cqlsh session host.
- SESSION tracing_session_id
- Show the activity details for a specific query provided in
tracing_session_id. Session IDs are shown in the query results and
are recorded to the system_traces.sessions table.Note: All queries run from a TRACING enabled cqlsh session are captured in the session and events table and saved for 24 hours. After that time, the tracing information time-to-live expires.
Examples
Show the
version:
SHOW VERSION
Example output, which
varies depending on your
implementation:
[cqlsh 5.0.1 | DSE 6.7.3 | CQL spec 3.4.5 | DSE protocol v2]
Show
the host information for the cqlsh session
host:
SHOW HOST
Returns the host name, IP address, and port of the CQL shell session. For example:
Connected to Test Cluster at 127.0.0.1:9042.
Show
the request activity details for a specific
session:
Sample output from SHOW
SESSION:SHOW SESSION d0321c90-508e-11e3-8c7b-73ded3cb6170
Note: Use
a session ID from the query results or from the system_traces.sessions table.
Tracing session: d0321c90-508e-11e3-8c7b-73ded3cb6170
activity | timestamp | source | source_elapsed
-----------------------------------------------------------------------------------------------------------------------------------------+--------------+-----------+----------------
execute_cql3_query | 12:19:52,372 | 127.0.0.1 | 0
Parsing CREATE TABLE emp (\n empID int,\n deptID int,\n first_name varchar,\n last_name varchar,\n PRIMARY KEY (empID, deptID)\n); | 12:19:52,372 | 127.0.0.1 | 153
Request complete | 12:19:52,372 | 127.0.0.1 | 650
. . .