我需要在循环中动态生成列名,并使用PLSQL访问oracle表中的列。我该怎么做?
DECLARE
varValue VARCHAR(20);
CURSOR c IS
SELECT * FROM TEST1;
BEGIN
FOR i IN c LOOP
FOR j IN 1..5
LOOP
EXECUTE IMMEDIATE 'SELECT ''NAME1'||to_Char(j)||''' from dual' INTO varValue;
dbms_output.put_line(j);
dbms_output.put_line(i.varValue);
END LOOP;
END LOOP;
END;
实际问题是,我需要通过游标(c)给出每行(i)的单元格值,例如i.name11,i.name12 .... i.name1100。在每个单元中部署的逻辑是相同的。所以我需要这里使用的列名,即动态生成name11。这已经完成并存储到变量varValue。现在我如何访问单元格i.varValue,以便在循环中生成var值。
错误如下:
ORA-06550: line 14, column 34:
PLS-00302: component 'VARVALUE' must be declared
ORA-06550: line 14, column 11:
PL/SQL: Statement ignored
答案 0 :(得分:0)
DECLARE
varValue VARCHAR(20);
CURSOR c IS
SELECT * FROM TEST1;
BEGIN
FOR i IN c LOOP
FOR j IN 1..5
LOOP
EXECUTE IMMEDIATE 'SELECT ''NAME1'||to_Char(j)||''' from dual' INTO varValue;
dbms_output.put_line(j);
dbms_output.put_line('NAME1'||to_Char(j)||' : '||varValue);
END LOOP;
END LOOP;
END;