接受的答案使用条件DBMS_RANDOM.VALUE IS NOT NULL这是不合适的。 它只是防止循环，但是一个简单的问题会出现， 如何和何时dbms_random.VALUE可以为空？ 从逻辑上讲，它永远不会是NULL 。

更合适的解决scheme是使用sys.odciNumberList并防止循环循环。

例如，

build立

SQL> CREATE TABLE t ( 2 ID NUMBER GENERATED ALWAYS AS IDENTITY, 3 text VARCHAR2(100) 4 ); Table created. SQL> SQL> INSERT INTO t (text) VALUES ('word1, word2, word3'); 1 row created. SQL> INSERT INTO t (text) VALUES ('word4, word5, word6'); 1 row created. SQL> INSERT INTO t (text) VALUES ('word7, word8, word9'); 1 row created. SQL> COMMIT; Commit complete. SQL> SQL> SELECT * FROM t; ID TEXT ---------- ---------------------------------------------- 1 word1, word2, word3 2 word4, word5, word6 3 word7, word8, word9 SQL>

所需查询：

SQL> SELECT t.id, 2 trim(regexp_substr(t.text, '[^,]+', 1, lines.column_value)) text 3 FROM t, 4 TABLE (CAST (MULTISET 5 (SELECT LEVEL FROM dual CONNECT BY LEVEL <= regexp_count(t.text, ',')+1) 6 AS sys.odciNumberList 7 ) 8 ) lines 9 ORDER BY id 10 / ID TEXT ---------- -------------------------------------------------- 1 word1 1 word2 1 word3 2 word4 2 word5 2 word6 3 word7 3 word8 3 word9 9 rows selected.

使用XMLTABLE的备用解决scheme：

SQL> SELECT id, 2 trim(COLUMN_VALUE) text 3 FROM t, 4 xmltable(('"' 5 || REPLACE(text, ',', '","') 6 || '"')) 7 / ID TEXT ---------- ------------------------ 1 word1 1 word2 1 word3 2 word4 2 word5 2 word6 3 word7 3 word8 3 word9 9 rows selected. SQL>

有很多方法可以完成这个任务，比如MODEL子句。 有关更多示例，请参阅将逗号分隔的string拆分为表格