通过从变量执行语句从存储过程获取 SQLCODE 和 SQLSTATE

Question

我有这个：

CREATE OR replace PROCEDURE log_test
                                 ( IN QUERY VARCHAR(24576),
                                   IN LOGTBL varchar(20) ) LANGUAGE SQL
BEGIN
DECLARE v_select_query VARCHAR(24576);
DECLARE v_query VARCHAR(24576);
DECLARE v_logtbl varchar(20);
DECLARE v_errormsg varchar(2048);
DECLARE v_time TIMESTAMP;
DECLARE v_temp_select varchar(1024);
DECLARE stmt STATEMENT;
DECLARE SQLCODE INTEGER DEFAULT 0;
DECLARE SQLSTATE CHAR(5) DEFAULT '00000';
DECLARE CONTINUE HANDLER 
FOR SQLEXCEPTION,SQLWARNING,NOT FOUND
    SET v_sqlcode = SQLCODE;




set v_select_query  = 'Set (?) = ('||QUERY||')';
set v_query  = 'Set (?) = ('||QUERY||')';
set v_bezug  = bezug;
set v_logtbl = logtbl;
set v_time   = CURRENT TIMESTAMP;



PREPARE stmt from v_select_query;

EXECUTE stmt into v_temp_select;

END @

语句查询为

 select count(*) from testtbl;

并且在没有 sqlstate 捕获它的情况下工作。

结果是我想在语句成功或失败时将sqlcode保存在变量中。但是现在我只收到一条错误消息，在“”意外令牌“”之后。

关于如何解决这个问题有什么想法吗？我稍后想通过插入到另一个 table.

来记录 sqlcode

DB2 Windows v10.5

感谢您的帮助

Answer 1

根据评论，修复代码中的语法错误。下面的示例将针对 Db2-LUW 进行编译，但您的代码中还有其他错误和问题，您稍后会在测试中发现这些错误和问题。

CREATE OR replace PROCEDURE log_test
( IN QUERY VARCHAR(24576),
  IN LOGTBL varchar(20) ) 
LANGUAGE SQL
specific log_test
BEGIN
    DECLARE SQLCODE INTEGER DEFAULT 0;
    DECLARE SQLSTATE CHAR(5) DEFAULT '00000';
    DECLARE v_select_query VARCHAR(24576);
    DECLARE v_query VARCHAR(24576);
    DECLARE v_logtbl varchar(20);
    DECLARE v_errormsg varchar(2048);
    DECLARE v_time TIMESTAMP;
    DECLARE v_temp_select varchar(1024);
    DECLARE v_sqlcode INTEGER;
    DECLARE v_sqlstate CHAR(5);
    DECLARE v_bezug varchar(1024);

    DECLARE stmt STATEMENT;
    DECLARE CONTINUE HANDLER FOR SQLWARNING,NOT FOUND
        SET v_sqlcode = SQLCODE;
    DECLARE EXIT HANDLER FOR SQLEXCEPTION 
        SET v_sqlstate = SQLSTATE;


    set v_select_query  = 'Set (?) = ('||QUERY||')';
    set v_query  = 'Set (?) = ('||QUERY||')';
    set v_bezug  = 'bezug';
    set v_logtbl = logtbl;
    set v_time   = CURRENT TIMESTAMP;



    PREPARE stmt from v_select_query;

    EXECUTE stmt into v_temp_select;

END@

通过从变量执行语句从存储过程获取 SQLCODE 和 SQLSTATE

Get SQLCODE and SQLSTATE from stored procedure with executing a statement from variable

sql

db2

error-handling

stored-procedures

execute