"libai">
本函数可以将“目标字符串”以“指定字符串”进行拆分,并通过表结构返回结果。代码如下: CREATE OR REPLACE TYPE str_split IS TABLE OF VARCHAR2 (4000). CREATE OR REPLACE FUNCTION splitstr(p_string IN VARCHAR2, p_delimiter IN VARCHAR2) RETURN str_split PIPELINED AS v_length NUMBER := LENGTH(p_string). v_start NUMBER := 1. v_index NUMBER. BEGIN WHILE(v_start <.= v_length) LOOP v_index := INSTR(p_string, p_delimiter, v_start). IF v_index = 0 THEN PIPE ROW(SUBSTR(p_string, v_start)). v_start := v_length 1. ELSE PIPE ROW(SUBSTR(p_string, v_start, v_index - v_start)). v_start := v_index 1. END IF. END LOOP. RETURN. END splitstr. 创建完毕后,我们来测试一下,例如执行如下SQL: 0select * from table(splitstr( Hello,Cnblogs! , , )). 其输出结果为一个两行的表,如下图: 将行转为列显示: 0select a.column_value v1,b.column_value v2 from (0select * from (0select rownum rn,t.* from table(splitstr( Hello,Cnblogs! , , )) t)) a, (0select * from (0select rownum rn,t.* from table(splitstr( Hello,Cnblogs! , , )) t)) b where a.rn=1 and b.rn=2