### Code Reference
- URL:https://blog.csdn.net/paul50060049/article/details/78811957
- DESC:oracle long to char转换(oracle 11g 10g)
- Last Update:2020-7-17 22:00
- Time:2020-7-17 22:00 Tittle:oracle long to char转换(oracle 11g 10g)
- Version:001
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oracle long to char转换(oracle 11g 10g)
-- 验证long to char select a.column_name, b.constraint_name, b.constraint_type, instr(fun_long2char(b.constraint_name, a.owner), ' IS NOT NULL') from dba_cons_columns a, dba_constraints b where a.constraint_name = b.constraint_name and a.owner = b.owner and b.constraint_type in ('P', 'R', 'U', 'C', 'V', 'O', 'H', 'F', 'S') and instr(fun_long2char(b.constraint_name, a.owner), ' IS NOT NULL') = 0 -- 转化方法 create or replace function fun_long2char(pv_constraintname in varchar2, pv_owner in varchar2) return varchar2 as lv_text varchar2(32000); begin select search_condition into lv_text from dba_constraints t where upper(t.constraint_name) = upper(pv_constraintname) and upper(t.owner) = upper(pv_owner); lv_text := substr(nvl(lv_text, ''), 1, 500); return lv_text; end fun_long2char;
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