Gbase 8C access authority query function (II)

has_column_privilege(user, table, column, privilege)

describe ： Specify whether the user has access to the column .

surface 1  Parameter type description

Parameter name	Legal input type
user	name, oid
table	text, oid
column	text, smallint
privilege	text

Return type ：Boolean

has_column_privilege(table, column, privilege)

describe ： Whether the current user has access to the column , Legal parameter types are shown in table 1.

Return type ：Boolean

remarks ：has_column_privilege Check whether the user accesses a column in a specific way . Its parameters are similar to has_table_privilege, You can add columns by column name or attribute number . The type of access you want must be SELECT、INSERT、UPDATE、COMMENT or REFERENCES Some combinations of .

Having the table level permission of the table implies having the column level permission of each column of the table .

has_cek_privilege(user, cek, privilege)

describe ： Specify whether the user has access column encryption key CEK Authority . The parameters are described as follows .

surface 2 Parameter type description

Parameter name	Legal input type	describe	Value range
user	name,oid	user	User name or id.
cek	text,oid	Column encryption key	Column encryption key name or id.
privilege	text	jurisdiction	USAGE： Allow the use of the specified column encryption key . DROP： Allow to delete the specified column encryption key .

Return type ：Boolean

has_cmk_privilege(user, cmk, privilege)

describe ： Specify whether the user has access to the client encryption master key CMK Authority . The parameters are described as follows .

surface 3 Parameter type description

Parameter name	Legal input type	describe	Value range
user	name,oid	user	User name or id.
cmk	text,oid	Client encryption master key	Client encryption master key name or id.
privilege	text	jurisdiction	USAGE： Allow the specified client encryption master key . DROP： Allow to delete the specified client encryption master key .

Return type ：Boolean

has_database_privilege(user, database, privilege)

describe ： Specify whether the user has access to the database . The parameters are described as follows .

surface 4  Parameter type description

Parameter name	Legal input type
user	name, oid
database	text, oid
privilege	text

Return type ：Boolean

has_database_privilege(database, privilege)

describe ： Whether the current user has access to the database , See table for legal parameter types 4.

Return type ：Boolean

remarks ：has_database_privilege Check whether users can access the database in a specific way . Its parameters are similar has_table_privilege. The access permission type must be CREATE、CONNECT、TEMPORARY、ALTER、DROP、COMMENT or TEMP（ Equivalent to TEMPORARY） Some combinations of .