如何在Postgresql中编写更新函数(存储过程)？

Question

我想update function在postgresql中创建一个(存储过程),我在google上搜索了很多次,但没有找到更新函数(存储过程)的正确示例.如何在Postgresql中编写更新函数并更改表中的现有数据？

提前致谢.

Example of Function

CREATE OR REPLACE FUNCTION updateuser_login(userloginidp integer, usercategoryidf integer, usertypeidf integer, usertypereferenceidf integer, loginname text, loginpassword text, menutypeidf integer, username text, dashboardconfig text, careprovideridf integer, isactive boolean)
  RETURNS void AS
$BODY$BEGIN
    UPDATE  tbuserlogin
    SET usercategoryidf="@usercategoryidf", 
        usetypeidf="@usertypeidf", 
        usertypereferenceidf="@usertypereferenceidf", 
        loginname="@loginname", 
        loginpassword="@loginpassword", 
        menutypeidf="@menutypeidf", 
        username="@username", 
        dashboardconfig="@dashboardconfig", 
        careprovideridf="@careprovideridf", 
        isactive="@isactive"
    WHERE   userloginidp = "@userloginidp";
END$BODY$
  LANGUAGE plpgsql VOLATILE
  COST 100;
ALTER FUNCTION updateuser_login(integer, integer, integer, integer, text, text, integer, text, text, integer, boolean)
  OWNER TO postgres;

Answer 1

您可以在PGXN网站的源代码中找到这类内容的优秀示例:

https://github.com/pgxn/pgxn-manager/tree/master/sql

来自用户sql文件的示例:

CREATE OR REPLACE FUNCTION update_user(
    nickname   LABEL,
    full_name  TEXT   DEFAULT NULL,
    email      EMAIL  DEFAULT NULL,
    uri        URI    DEFAULT NULL,
    twitter    CITEXT DEFAULT NULL
) RETURNS BOOLEAN LANGUAGE plpgsql SECURITY DEFINER AS $$
/*

    % SELECT update_user(
        nickname  := 'theory',
        full_name := 'David E. Wheeler',
        email     := 'justatheory@pgxn.org',
        uri       := 'http://www.justatheory.com/',
        twitter   :- 'theory'
    );
     update_user 
    ?????????????
     t

Update the specified user. The user must be active. The nickname cannot be
changed. The password can only be changed via `change_password()` or
`reset_password()`. Pass other attributes as:

full_name
: The full name of the user.

email
: The email address of the user. Must be a valid email address as verified by
  [Email::Valid](http://search.cpan.org/perldoc?Email::Valid).

uri
: Optional URI for the user. Should be a valid URI as verified by
  [Data::Validate::URI](http://search.cpan.org/perldoc?Data::Validate::URI).

twitter
: Optional Twitter username. A leading "@" wil be removed.

Returns true if the user was updated, and false if not.

*/
BEGIN
    UPDATE users
       SET full_name      = COALESCE(update_user.full_name, users.full_name),
           email          = COALESCE(update_user.email,     users.email),
           uri            = COALESCE(update_user.uri,       users.uri),
           twitter        = COALESCE(trim(leading '@' FROM update_user.twitter), users.twitter),
           updated_at     = NOW()
     WHERE users.nickname = update_user.nickname
       AND users.status   = 'active';
    RETURN FOUND;
END;
$$;

Answer 2

Postgresql 读取双引号作为列名。将其替换为单引号，或者您可以只使用您的参数。

CREATE OR REPLACE FUNCTION updateuser_login(userloginidp integer,
usercategoryidf integer, usertypeidf integer, usertypereferenceidf
integer, loginname text, loginpassword text, menutypeidf integer,
username text, dashboardconfig text, careprovideridf integer, isactive
boolean)   RETURNS void AS 
$BODY$
BEGIN
    UPDATE  tbuserlogin
    SET usercategoryidf = '@usercategoryidf', 
        usetypeidf = '@usertypeidf', 
        usertypereferenceidf = '@usertypereferenceidf', 
        loginname = '@loginname', 
        loginpassword = '@loginpassword', 
        menutypeidf = '@menutypeidf', 
        username = '@username', 
        dashboardconfig = '@dashboardconfig', 
        careprovideridf = '@careprovideridf', 
        isactive = '@isactive'
    WHERE   userloginidp = '@userloginidp'; 
END;
$BODY$   
LANGUAGE plpgsql VOLATILE   
COST 100; 
ALTER FUNCTION updateuser_login(integer, integer, integer, integer, text, text, integer, text, text, integer, boolean)   
OWNER TO postgres;