搜索列名，而不是整個數據庫SQL

Question

SELECT something 
FROM table1, table2, table 
WHERE tableColumn = "tableName" 

Answer 1

你可以做一些瘋狂，複雜的關於模式的表，如果有必要，但這應該在緊要關頭：

select <something> 
    from table1 
    where 
     tableColumn = "tableName" 
union all 
select <something> 
    from table2 
    where 
     tableColumn = "tableName" 
union all 
select <something> 
    from table3 
    where 
     tableColumn = "tableName" 

只要確保從聯合中的每個查詢中選擇相同類型的列。