Question

如果我的英语不好，我很抱歉。我是PL / SQL的新手，我必须创建一个以这种形式接收字符串分隔值的存储过程：

device_id | table | operation_type | field_1 | field_2| field_n

device_id = Number of a device

table = Table Destiny

operation_type = "I" for insert "U" for update.

field_1 = a field value

field_2 = a field value

field_3 = a field value

field_4 = a field value

字符串的示例可能是这样的：

"555;table_a;I;123;abc;xyz?456;def;uvw?...;...;...;"

; = value colums separator

? = row separator

对于字符串，前三个值仅出现一次，接下来的值是destiny表中插入或更新的数据。

如何获取字符串值并组装查询（插入/更新）？

table_a

field_1 | field_2 | field_3 | field_4

123     | abc     | xyz     | 555 

456     | def     | uvw     | 555

感谢您的帮助，我真的很感激。

Answer 1

试试这个：

create or replace procedure InsertUpdateValues(cad varchar2) is
data_v DBMS_SQL.VARCHAR2_TABLE;
table_name varchar2(75) := regexp_substr(cad,'[^;]+',instr(cad,';',1,1)); --get table name
operation varchar2(1) := regexp_substr(cad,'[^;]+',instr(cad,';',1,2)); --get operation
id number:=to_number(regexp_substr(cad,'[^;]+',1)); --get id (500) in this case 

begin
select regexp_substr(dat,'[^\?]+',1,level,'i') rows_data bulk collect into data_v  from 
(select regexp_substr(cad,'.*',instr(cad,';',1,3)+1) dat from 
dual)
connect by level <= length (regexp_replace (dat , '[^\?]+'))  +1;

for i in 1..data_v.count loop
    if lower(operation) = 'i' then
        execute immediate 'insert into '||table_name||' values (:f1,:f2,:f3,:f4)'
        using regexp_substr(data_v(i),'[^;]+',1,1),regexp_substr(data_v(i),'[^;]+',1,2),regexp_substr(data_v(i),'[^;]+',1,3),id;

    end if;
    if lower(operation) = 'u' then
        execute immediate 'update '||table_name||' set field_2 = :f2, field_3 = :f3 , field_4 = :f4 where field_1 = :f1' using
        regexp_substr(data_v(i),'[^;]+',1,2),regexp_substr(data_v(i),'[^;]+',1,3),id,regexp_substr(data_v(i),'[^;]+',1,1);

    end if;
end loop;

end;

并称之为：

begin
InsertUpdateValues('555;table_a;I;123;abc;xyz?456;def;uvw');
end;

这将插入table_a值：

field_1 | field_2 | field_3 | field_4

123     | abc     | xyz     | 555 

456     | def     | uvw     | 555

oracle存储过程拆分字符串，用于插入或更新到表

1 个答案: