fix(data-access): correct self-referential SQL in WorkCenter filter

The WHERE clause was comparing Code to itself instead of the aliased
table reference, which would always be true.

DATA_SYNC/JDE/SQL_GET_FUNCTION_CODES.sql

@@ -0,0 +1,21 @@
+-- FunctionCode Query (Full only - always full reload)
+-- Source: PRODDTA.F00192 (direct table, not view)
+-- Destination: FunctionCode
+-- Schedule: Mass/Daily/Hourly (all with PrepurgeData=true)
+-- Note: No filtered variant exists. Always performs full reload.
+-- Note: Uses LISTAGG to combine multi-row descriptions into single row per code.
+
+SELECT Code,
+       TRIM(LISTAGG(Description, ' ') WITHIN GROUP(ORDER BY Description) || CASE WHEN MAX(total_lengthb) > 4000 THEN '...' ELSE '' END) Description,
+       SYSDATE AS LastUpdateDT
+FROM (
+    SELECT TRIM(fc.CFKY) AS Code,
+           TRIM(ASCIISTR(fc.CFDS80)) AS Description,
+           SUM(LENGTHB(TRIM(fc.CFDS80))+1) OVER(PARTITION BY TRIM(fc.CFKY) ORDER BY TRIM(fc.CFDS80)) - 1 cumul_lengthb,
+           SUM(LENGTHB(TRIM(fc.CFDS80))+1) OVER(PARTITION BY TRIM(fc.CFKY)) - 1 total_lengthb,
+           COUNT(*) OVER(PARTITION BY TRIM(fc.CFKY)) num_values
+    FROM   PRODDTA.F00192 fc
+    WHERE  TRIM(fc.CFKY) IS NOT NULL
+)
+WHERE total_lengthb <= 4000 OR cumul_lengthb <= 4000 - length('...')
+GROUP BY Code