Question

I am trying to create a nested SELECT SQL statment. I store all value and id and want to select rows that satisfy multiple values. How can I generate a SELECT statement using Java? For example,

ID VALUE
1  RED
2  BIG
1  SMALL
1  SMOOTH
2  TALL

…..

To select an item that is both red and small the statement would be:

SELECT * 
FROM table 
WHERE table.value = RED AND 
       id IN (SELECT * 
              FROM table 
              WHERE table.value = SMALL AND id IN (...))

Answer 1

This type of problem is called Relational Division

SELECT ID
FROM tableName
WHERE VALUE IN ('SMALL','SMOOTH')
GROUP BY ID
HAVING COUNT(*) = 2

• SQLFiddle Demo

the query above will result 1 since the ID contains both records.

If no unique constraint was enforce on value for every ID, DISTINCT is required.

SELECT ID
FROM tableName
WHERE VALUE IN ('SMALL','SMOOTH')
GROUP BY ID
HAVING COUNT(DISTINCT VALUE) = 2

• SQLFiddle Demo
• SQLFiddle Demo (with duplicate)

OTHER(s)

• SQL of Relational Division