Running a query such as

SELECT INTKEY, STRINGKEY, FLOATNUM FROM BQT1.SMALLA WHERE FLOATNUM <> SOME (SELECT FLOATNUM FROM BQT1.SMALLA WHERE STRINGKEY = 10) 

gets translated as

SELECT g_0.IntKey, g_0.StringKey, g_0.FloatNum FROM dvqe..SmallA AS g_0 WHERE g_0.FloatNum <> SOME (SELECT g_1.FloatNum FROM dvqe..SmallA AS g_1 WHERE g_1.StringKey = '10')

and fails with

com.osisoft.rdsa.RdsaException: [PIOLEDBENT] [SQL Parser] [Line 1:100] Missing ) at 'SELECT'
[Line 1:171] Extraneous ')'

Same thing when the SOME keyword is replaced with ANY (as in, ANY is translated to the exact same query, with 'SOME', which is understandable, since they should be equivalent).

This appears to be a bug in Osisoft PI, since issuing the same query with ANY against the datasource (without teiid involvement) works, so I suggest translating SOME as ANY as a workaround.