Question

psql（9.2.23）我使用用PGsql编写的函数从数据库中获取用户凭据。这是数据库存储的内容。

directory=# select * from entusercredentials;
         lastUpdate         | userName | nAttribute | tag  |    pAttribute    |
         uri
----------------------------+----------+------------+------+------------------+-
----------------------
 2018-12-10 09:18:35.103+00 | admin    | admin      | test | 71A2E03E670C3799 |
admin@acmepacket.com
 2018-12-10 09:18:35.103+00 | apple    | apple      | test | A489BB760335F6F5 |
 2018-12-10 09:18:35.103+00 | user01   | user01     | test | 71A2E03E670C3799 |
 2018-12-10 09:18:35.103+00 | user02   | user02     | test | 71A2E03E670C3799 |
user02@acmepacket.com
 2018-12-10 09:18:35.103+00 | user03   | user03     | test | 71A2E03E670C3799 |
user03@acmepacket.com
(5 rows)

我使用了一个函数来获取数据。当“ uri”不为空时，它可以正常工作，但是我注意到，如果“ uri”为空，则“ nAttribute”和“ pAttribute”将丢失。

directory=# SELECT * FROM sp_fetch_user_credentials('admin', 'test');
 userName | groups  |        sipAddress        | nAttribute |    pAttribute    |
         uri
----------+---------+--------------------------+------------+------------------+
----------------------
 admin    | group01 | sip:admin@acmepacket.com | admin      | 71A2E03E670C3799 |
 admin@acmepacket.com
(1 row)

directory=# SELECT * FROM sp_fetch_user_credentials('apple', 'test');
 userName | groups  |        sipAddress        | nAttribute | pAttribute | uri
----------+---------+--------------------------+------------+------------+-----
 apple    | group01 | sip:apple@acmepacket.com |            |            |
(1 row)

directory=#

这是我的功能：

CREATE OR REPLACE FUNCTION sp_fetch_user_credentials(text, text)
  RETURNS SETOF type_usercredentials AS
$BODY$
DECLARE
        sName ALIAS FOR $1;
        sTag ALIAS FOR $2;
        iCnt int;
        sGroups text;
        select_statement text;
        tmp_grp_rec record;
        tmp_cred_rec record;
        user_cred type_usercredentials;

BEGIN
        SET ENABLE_SEQSCAN = OFF;
        SELECT into tmp_cred_rec * FROM entusercredentials WHERE "nAttribute"= sName AND "tag" = sTag;
        IF (tmp_cred_rec IS NOT NULL) THEN
                IF (tmp_cred_rec."nAttribute" IS NOT NULL) THEN
                        user_cred."nAttribute"  = tmp_cred_rec."nAttribute";
                END IF;
                IF (tmp_cred_rec."pAttribute" IS NOT NULL) THEN
                        user_cred."pAttribute"  = tmp_cred_rec."pAttribute";
                END IF;
                IF (tmp_cred_rec."uri" IS NOT NULL) THEN
                        user_cred."uri" = tmp_cred_rec."uri";
                END IF;
        END IF;

        user_cred."userName" = sName;
        IF (tmp_cred_rec."userName" IS NOT NULL) THEN
                SELECT into user_cred."sipAddress" "sipAddress" FROM entusername WHERE "userName"= tmp_cred_rec."userName" AND "tag"= sTag;
                select_statement = 'SELECT "groupName" FROM entusergroup WHERE
                        "userName"=$q$' || tmp_cred_rec."userName" || '$q$ AND "tag"=''' || sTag || ''' ORDER BY "groupName"';
                iCnt := 0;
                FOR tmp_grp_rec IN EXECUTE select_statement
                LOOP
                   IF (iCnt = 0) THEN
                        sGroups := tmp_grp_rec."groupName";
                   ELSE
                        sGroups := sGroups || '\t' || tmp_grp_rec."groupName";
                   END IF;
                   iCnt := iCnt + 1;
                END LOOP;
                user_cred."groups" := sGroups;
        END IF;
        RETURN  NEXT user_cred;
END;
$BODY$

希望有人可以帮助我。预先感谢。

postgres SQL函数无法获取某些属性

0 个答案: