АКТУАЛИЗИРАНЕ НА ВЛОЖЕН СЛУЧАЙ

Синтаксисът за UPDATE изявление е:

Update_set_clause ::=

Не можете да направите:

UPDATE table_name
CASE WHEN ... THEN SET ...
     WHEN ... THEN SET ...

Вероятно ще бъде по-лесно да го разделите на множество изрази:

UPDATE TEMP_PARSE_EXIST
SET ADT_ACT = 'CASE 1',
    V_NUM   = REGEXP_SUBSTR(REGEXP_SUBSTR(ADRS, '^\w+(\s?-\s?)\w+'), '\d+$')
WHERE ADT_ACT IS NULL
AND   REGEXP_LIKE(REGEXP_SUBSTR(ADRS, '^\w+(\s?-\s?)\w+\s\w+', 'i'), '(ABBEY|ACRES|ALLÉE|ALLEY|AUT|AUTOROUTE|AV|AVE|AVENUE|BAY|BEACH|BEND|BLVD|BOUL|BOULEVARD|BYPASS|WYND)$', 'i')
AND   REGEXP_LIKE(REGEXP_SUBSTR(ADRS, '^\w+(\s?-\s?)\w+'), '^\w+(\s?-\s?)\d+$');

UPDATE TEMP_PARSE_EXIST
SET ADT_ACT = 'CASE 2',
    V_STREET_NAME = REGEXP_SUBSTR(REGEXP_SUBSTR(ADRS, '^\w+(\s?-\s?)\w+'), '\d+(ST|ND|RD|TH)$')
WHERE ADT_ACT IS NULL
AND   REGEXP_LIKE(REGEXP_SUBSTR(ADRS, '^\w+(\s?-\s?)\w+\s\w+', 'i'), '(ABBEY|ACRES|ALLÉE|ALLEY|AUT|AUTOROUTE|AV|AVE|AVENUE|BAY|BEACH|BEND|BLVD|BOUL|BOULEVARD|BYPASS|WYND)$', 'i')
AND   REGEXP_LIKE(REGEXP_SUBSTR(ADRS, '^\w+(\s?-\s?)\w+'), '^\w+(\s?-\s?)\d+(ST|ND|RD|TH)$');

...

Актуализация :

Регулярните изрази могат да бъдат опростени (или поне да се намали дублирането и влагането на изразите):

UPDATE TEMP_PARSE_EXIST
SET ADT_ACT = 'CASE 2',
    V_STREET_NAME = REGEXP_SUBSTR( ADRS, '^\w+(\s?-\s?)(\d+(ST|ND|RD|TH))', 1, 1, 'i', 2 )
WHERE ADT_ACT IS NULL
AND   REGEXP_LIKE( '^\w+(\s?-\s?)\d+(ST|ND|RD|TH)\s\w*(ABBEY|ACRES|ALLÉE|ALLEY|AUT|AUTOROUTE|AV|AVE|AVENUE|BAY|BEACH|BEND|BLVD|BOUL|BOULEVARD|BYPASS|WYND)', 'i' );