EXECUTE AS

Provides a testing mechanism when setting up proxy roles by running CQL commands as another role during a CQL shell session.

To start, use EXECUTE AS <role_name>. The commands run with the permissions of the specified role. To stop, use EXECUTE AS without a role name.

Requires PROXY.EXECUTE on the specified role, see GRANT ROLE.

Synopsis

EXECUTE AS [ <role_name> ]

Syntax legend

Legend
Syntax conventions	Description
UPPERCASE	Literal keyword.
Lowercase	Not literal.
`< >`	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.
`<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.

<role_name>: The name of the role to run the commands as. The commands run with the permissions of the specified role.

Example

Use the read_race role to execute commands:

EXECUTE AS read_race;

Executing queries as read_race.

Perform a query:

SELECT *
FROM cycling.race_times;

 race_name                   | race_time | cyclist_name
-----------------------------+-----------+--------------
 17th Santos Tour Down Under |  19:15:18 | Rohan DENNIS
 17th Santos Tour Down Under |  19:15:20 | Richie PORTE
 17th Santos Tour Down Under |  19:15:38 |  Cadel EVANS
 17th Santos Tour Down Under |  19:15:40 | Tom DUMOULIN

(4 rows)

Stop using the read_race role:

EXECUTE AS

Disabling proxy execution

EXECUTE AS

Synopsis

Example

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