Question

我在查询中的同一列上有多个like子句。是否可以在结果集中包含like子句值？例如

SELECT * FROM address ADDR WHERE 
addr.line LIKE '%ONE%' 
OR addr.line LIKE '%TWO%'
OR addr.line LIKE '%THREE%'
OR addr.line LIKE '%FOUR%';

结果集包含所有地址，包括ONE，TWO，THREE，FOUR。现在我希望看到结果集如

Address1ONE | ONE
Address2TWO | TWO
THREEaddr   | THREE

任何线索？ -R

Answer 1

SELECT addr.*,
CASE WHEN addr.line LIKE '%ONE%'  THEN 'ONE'
  WHEN addr.line LIKE '%TWO%'  THEN 'TWO'
  WHEN addr.line LIKE '%THREE%'  THEN 'THREE'
  WHEN addr.line LIKE '%FOUR%'  THEN 'FOUR' 
  ELSE 'Unknown'  -- redundant since other values filtered out by WHERE...
 END AS address_type 
 FROM address ADDR WHERE 
addr.line LIKE '%ONE%' 
OR addr.line LIKE '%TWO%'
OR addr.line LIKE '%THREE%'
OR addr.line LIKE '%FOUR%';

在结果列表中包含like子句值

1 个答案: