创建一个FUNCTION
CREATE OR REPLACE FUNCTION isnumeric(str IN VARCHAR2)
RETURN NUMBER
IS
v_str FLOAT;
BEGIN
IF str IS NULL
THEN
RETURN 0;
ELSE
BEGIN
SELECT TO_NUMBER (str)
INTO v_str
FROM DUAL;
EXCEPTION
WHEN INVALID_NUMBER
THEN
RETURN 0;
END;
RETURN 1;
END IF;
END isnumeric;
根据FUNCTION查找无效数字,并修改。
select * from table_name where isnumeric(column_name) = 0
PL/SQL prompts "ORA-01722: invalid number, find the invalid number
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