oracle 临时表和动态SQL

最新推荐文章于 2025-05-29 17:14:21 发布

最新推荐文章于 2025-05-29 17:14:21 发布 · 474 阅读

文章标签：

#SQL #Oracle

此博客展示了一段Oracle存储过程代码。该存储过程接收两个字符串参数，先检查临时表是否存在，若不存在则创建，接着插入数据，查询数据并输出，最后删除表中数据、提交事务并删除表。若过程中出现异常，会捕获并输出错误信息。

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create or replace procedure sp_tmp_test(v_col1 in varchar2,v_col2 in varchar2)
as
v_num NUMBER;
v_char varchar2(10);
sql_text varchar2(2000);
sql_text1 varchar2(2000);
notes varchar2(500);
p_nError NUMBER;
V_ERROR_MESSAGE VARCHAR2(500);

BEGIN
select count(*) into v_num from user_tables where table_name='T_TEMP';

--create temporary table
execute immediate 'CREATE GLOBAL TEMPORARY TABLE T_TEMP (
COL1 VARCHAR2(10),
COL2 VARCHAR2(10)
) ON COMMIT delete ROWS';

--insert data
sql_text:='insert into t_temp values(:1,:2)';
execute immediate sql_text using v_col1,v_col2;
--sql_text1:='select col1 into :1 from t_temp ';
--execute immediate sql_text1 using v_num;
--select col1 into v_num from t_temp;
execute immediate 'select col1 from t_temp' into v_char;

dbms_output.put_line(v_char);
execute immediate 'delete from t_temp';
commit;
execute immediate 'drop table t_temp';
EXCEPTION
WHEN OTHERS THEN
execute immediate 'drop table t_temp';
p_nError := SQLCODE;
V_ERROR_MESSAGE := sqlerrm;
dbms_output.put_line('error: ' || p_nError || ' ' || sqlerrm(p_nError));
END;