Get data by joining table does not work in oracle - oracle

Question

I have 2 tables where I want to join it and gets its data. For ex: Table A consists of Error Code and the description of its code is in Table B.
So the value of Error Code is stored like ,1, ,2, ,1,2 in table A.
tbl_fiber_invalid_trans_data -> Table A
TBL_INVALID_ERROR_DATA -> Table B.
I tried joining like below but the Remarks was all blank
SELECT a.SPAN_ID,MAINTENANCE_ZONE_NAME,a.MAINTENANCE_ZONE_CODE,a.R4G_STATE_NAME,
a.NETWORK_CATEGORY,a.NETWORK_TYPE,a.CONSTRUCTION_METHODOLOGY,
a.INVENTORY_STATUS_CODE,a.OWNERSHIP_TYPE_CODE,a.ROUTE_NAME,a.INTRACITY_LINK_ID ,
a.CALCULATED_LENGTH, REPLACE(a.REMARKS, ',1', '1') as REMARKS
FROM tbl_fiber_invalid_trans_data a
left JOIN TBL_INVALID_ERROR_DATA t
ON a.REMARKS = t.ID;
Let me know where I am wrong. and how to replace all those comma separated values
update
Table:tbl_fiber_invalid_trans_data
Name Null Type
------------------------ ---- ---------------
SPAN_ID NVARCHAR2(100)
MAINTENANCE_ZONE_NAME NVARCHAR2(100)
MAINTENANCE_ZONE_CODE NVARCHAR2(50)
R4G_STATE_NAME NVARCHAR2(50)
STATE_NAME NVARCHAR2(50)
NETWORK_CATEGORY NVARCHAR2(100)
NETWORK_TYPE NVARCHAR2(100)
CONSTRUCTION_METHODOLOGY NVARCHAR2(50)
INVENTORY_STATUS_CODE NVARCHAR2(20)
OWNERSHIP_TYPE_CODE NVARCHAR2(20)
ROUTE_NAME NVARCHAR2(100)
INTRACITY_LINK_ID NVARCHAR2(100)
CALCULATED_LENGTH NUMBER(38,8)
LAST_UPDATED_BY NVARCHAR2(100)
LAST_UPDATED_DATE DATE
REMARKS NVARCHAR2(1000)
Table:TBL_INVALID_ERROR_DATA
Name Null Type
-------- ---- --------------
ID NUMBER(18,8)
ERR_CODE NVARCHAR2(500)
Sample data as followed
Table 1
[![img1][1]][1]
Sample data table 2
[![enter image description here][2]][2]

Answer 1

Here's a simplified example that shows how you can extract integers from a comma separated list (REMARKS in tbl_fiber_invalid_trans_data), and then join that to the error codes list (TBL_INVALID_ERROR_DATA) to get the messages:
WITH codes AS (
SELECT DISTINCT SPAN_ID, REGEXP_SUBSTR(remarks, '\d+', 1, level) AS code
FROM tbl_fiber_invalid_trans_data
CONNECT BY REGEXP_SUBSTR(remarks, '\d+', 1, level) IS NOT NULL
)
SELECT t1.*, t2.err_code
FROM tbl_fiber_invalid_trans_data t1
JOIN codes c ON c.SPAN_ID = t1.SPAN_ID
LEFT JOIN TBL_INVALID_ERROR_DATA t2 ON t2.id = c.code
ORDER BY t1.SPAN_ID
Output (for my simplified demo):
SPAN_ID MAINTENANCE_ZONE_NAME REMARKS ERR_CODE
1 Zone 1 ,1 Span id length too short
2 Zone 2 ,2 Inventory suspended
3 Zone 3 ,1,2 Span id length too short
3 Zone 3 ,1,2 Inventory suspended
4 Zone 4 ,2,1 Span id length too short
4 Zone 4 ,2,1 Inventory suspended
5 Zone 5 null null
If you want all the errors for a zone in one line, you can aggregate them in a second CTE and JOIN to that instead:
WITH codes AS (
SELECT DISTINCT SPAN_ID, REGEXP_SUBSTR(remarks, '\d+', 1, level) AS code
FROM tbl_fiber_invalid_trans_data
CONNECT BY REGEXP_SUBSTR(remarks, '\d+', 1, level) IS NOT NULL
),
msgs AS (
SELECT SPAN_ID, LISTAGG(err_code, ', ') WITHIN GROUP (ORDER BY code) AS err_codes
FROM codes c
LEFT JOIN TBL_INVALID_ERROR_DATA t2 ON t2.id = c.code
GROUP BY SPAN_ID
)
SELECT t1.*, m.err_codes
FROM tbl_fiber_invalid_trans_data t1
JOIN msgs m ON m.SPAN_ID = t1.SPAN_ID
ORDER BY t1.SPAN_ID
Output
SPAN_ID MAINTENANCE_ZONE_NAME REMARKS ERR_CODES
1 Zone 1 ,1 Span id length too short
2 Zone 2 ,2 Inventory suspended
3 Zone 3 ,1,2 Span id length too short, Inventory suspended
4 Zone 4 ,2,1 Span id length too short, Inventory suspended
5 Zone 5 null null
Demo on dbfiddle

Answer 2

You need a join with LIKE as follows:
ON a.REMARKS || ',' like '%,'|| t.ID || ',%';
Update
You must use the following query:
SELECT SPAN_ID,
MAINTENANCE_ZONE_NAME,
MAINTENANCE_ZONE_CODE,
R4G_STATE_NAME,
NETWORK_CATEGORY,
NETWORK_TYPE,
CONSTRUCTION_METHODOLOGY,
INVENTORY_STATUS_CODE,
OWNERSHIP_TYPE_CODE,
ROUTE_NAME,
INTRACITY_LINK_ID,
CALCULATED_LENGTH,
LISTAGG(ID,',') WITHIN GROUP (ORDER BY ID) AS REMARKS,
LISTAGG(ERR_CODE,',') WITHIN GROUP (ORDER BY ID) AS ERR_CODE
FROM
(SELECT DISTINCT A.SPAN_ID,
MAINTENANCE_ZONE_NAME,
A.MAINTENANCE_ZONE_CODE,
A.R4G_STATE_NAME,
A.NETWORK_CATEGORY,
A.NETWORK_TYPE,
A.CONSTRUCTION_METHODOLOGY,
A.INVENTORY_STATUS_CODE,
A.OWNERSHIP_TYPE_CODE,
A.ROUTE_NAME,
A.INTRACITY_LINK_ID,
A.CALCULATED_LENGTH,
T.ID,
T.ERR_CODE
FROM TBL_FIBER_INVALID_TRANS_DATA A
LEFT JOIN TBL_INVALID_ERROR_DATA T
ON A.REMARKS || ',' LIKE '%,' || T.ID || ',%')
GROUP BY SPAN_ID,
MAINTENANCE_ZONE_NAME,
MAINTENANCE_ZONE_CODE,
R4G_STATE_NAME,
NETWORK_CATEGORY,
NETWORK_TYPE,
CONSTRUCTION_METHODOLOGY,
INVENTORY_STATUS_CODE,
OWNERSHIP_TYPE_CODE,
ROUTE_NAME,
INTRACITY_LINK_ID,
CALCULATED_LENGTH