DECLARE
v_test_nbr NUMBER;
v_check_exists NUMBER;
BEGIN
BEGIN
v_test_nbr := to_number(:P6_TEXT_FIELD);
EXCEPTION
WHEN OTHERS THEN
-- or catch 1722 (invalid number) and 6502 (char to number conversion error)
v_test_nbr := NULL;
END;
IF v_test_nbr IS NOT NULL
THEN
-- if v_test_nbr is not null then the field should be numerically valid
-- if it isn't then this code would be skipped and this validation
-- will not throw an error.
-- However, the previous validation will still fail when text is entered,
-- so this shouldn't matter.
BEGIN
SELECT 1
INTO v_check_exists
FROM my_table
WHERE column_name = :P6_TEXT_FIELD;
EXCEPTION
WHEN no_data_found THEN
v_check_exists := 0;
END;
IF v_check_exists = 1
THEN
RETURN 'A record with this key already exists';
END IF;
END IF;
RETURN NULL;
END;
No. | Subject | Author | Date | Views |
---|---|---|---|---|
86 | CREATE VIEW | admin | 2016.05.13 | 218 |
85 | eeeeee | admin | 2018.06.21 | 217 |
84 | If you want to use EXISTS in a PL/SQL function returning BOOLEAN | admin | 2018.05.19 | 215 |
83 | 3D Pie Chart | admin | 2016.05.17 | 214 |
82 | Process | admin | 2018.05.05 | 211 |
81 | IF/ELSE ... CASE WHEN | admin | 2018.06.25 | 208 |
80 | use a validation function for an element in apex 5.0 | admin | 2018.05.19 | 204 |
79 | Name Show | admin | 2016.04.28 | 203 |
78 | MISSIONARY_SUB | admin | 2018.06.25 | 198 |
77 | All Data DELETE from Table | admin | 2018.05.10 | 198 |
76 | How to convert DATE to NUMBER | admin | 2018.05.27 | 197 |
75 | 영수증 2023 | admin | 2024.01.04 | 193 |
74 | TABLE PRINT | admin | 2018.06.18 | 185 |
73 | Apex setup procedure | admin | 2016.04.28 | 180 |
72 | Captcha Test | admin | 2016.04.18 | 176 |
71 | CREATING A TABLE / SEQUENCE / TRIGGER | admin | 2016.04.28 | 172 |
70 | CREATE TABLESPACE | admin | 2016.04.28 | 170 |
69 | UPDATE PROCESS | admin | 2016.04.28 | 167 |
68 | EXPORT & IMPORT | admin | 2016.05.01 | 166 |
67 | SQL SELECT DISTINCT Statement | admin | 2016.04.29 | 160 |