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Code Issues

Documentation for improvement CORE-2452 : Add Role Name in input parameters for EXECUTE STATEMENT

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hvlad 2009-05-14 10:37:51 +00:00
parent e1470cb689
commit e001741d4b
1 changed files with 13 additions and 9 deletions
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20
doc/sql.extensions/README.execute_statement2
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@ -15,6 +15,7 @@ Syntax and notes :
[WITH AUTONOMOUS | COMMON TRANSACTION]
[AS USER <user_name>]
[PASSWORD <password>]
[ROLE <role_name>]
[WITH CALLER PRIVILEGES]
[INTO <variables>]
@ -23,6 +24,7 @@ Syntax and notes :
[WITH AUTONOMOUS | COMMON TRANSACTION]
[AS USER <user_name>]
[PASSWORD <password>]
[ROLE <role_name>]
[WITH CALLER PRIVILEGES]
- Duplicate clauses are not allowed
@ -49,10 +51,11 @@ Syntax and notes :
- if ON EXTERNAL DATA SOURCE clause is omitted then
a) statement will be executed against current (local) database
b) if AS USER clause is omitted or <user_name> equal to CURRENT_USER
and if ROLE clause is omitted or <role_name> equal to CURRENT_ROLE
then the statement is executed in current connection context
c) if <user_name> not equal to CURRENT_USER then the statement is executed in separate
connection established inside the same engine instance (i.e. created new internal
connection without Y-Valve and remote layers).
c) if <user_name> not equal to CURRENT_USER or <role_name> not equal to CURRENT_ROLE
then the statement is executed in separate connection established inside the same
engine instance (i.e. created new internal connection without Y-Valve and remote layers).
- <connection_string> is usual connection string accepted by isc_attach_database,
i.e. [<host_name><protocol_delimiter>]database_path.
@ -76,16 +79,17 @@ Syntax and notes :
- if AS USER clause is omitted then CURRENT_USER is used
- if PASSWORD clause is omitted then
a) if <user_name> is omitted, NULL or equal to CURRENT_USER value
a) if <user_name> is omitted, NULL or equal to CURRENT_USER value and
if <role_name> is omitted, NULL or equal to CURRENT_ROLE value
then trusted autentication is performed, and
a1) for current connection (ON EXTERNAL DATA SOURCE is omitted) -
CURRENT_USER is effective user account
CURRENT_USER\CURRENT_ROLE is effective user account and role
a2) for local database (<connection_string> refers to the current database) -
CURRENT_USER is effective user account
CURRENT_USER\CURRENT_ROLE is effective user account and role
a3) for remote database - operating system account under which engine
process is currently run is effective user account.
b) else only isc_dpb_user_name will be present in DPB and native autentication
is performed.
b) else only isc_dpb_user_name (and isc_dpb_sql_role_name) will be present in DPB and
native autentication is performed.
- if WITH CALLER PRIVILEGES is specified and ON EXTERNAL DATA SOURCE is omitted, then
the statement is prepared using additional privileges of caller stored procedure or trigger