取决于数据的一致性-假设要在第一列与第二列中显示的内容之间用一个空格隔开:
WITH TEST_DATA AS
(SELECT 'LOREM IPSUM' COLUMN_A FROM DUAL)
SELECT SUBSTR(t.COLUMN_A, 1, INSTR(t.COLUMN_A, ' ')-1) AS COLUMN_A,
SUBSTR(t.COLUMN_A, INSTR(t.COLUMN_A, ' ')+1) AS COLUMN_B
FROM test_data T;
您还可以在REGEX中使用以下查询:
WITH TEST_DATA AS
(SELECT 'LOREM IPSUM' COLUMN_A FROM DUAL)
SELECT REGEXP_SUBSTR(t.COLUMN_A, '[^ ]+', 1, 1) COLUMN_A,
REGEXP_SUBSTR(t.COLUMN_A, '[^ ]+', 1, 2) COLUMN_B
FROM test_data T;
Oracle 10g +具有正则表达式支持,根据您需要解决的情况提供更大的灵活性。它也有一个正则表达式子字符串方法…
3字分割:
WITH TEST_DATA AS
(SELECT 'LOREM IPSUM DIMSUM' COLUMN_A FROM DUAL)
SELECT REGEXP_SUBSTR(t.COLUMN_A, '[^ ]+', 1, 1) COLUMN_A,
REGEXP_SUBSTR(t.COLUMN_A, '[^ ]+', 1, 2) COLUMN_B,
REGEXP_SUBSTR(t.COLUMN_A, '[^ ]+', 2, 3) COLUMN_C
FROM test_data T;
参考: