| Item | Pre-migration version | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 9.5 | 9.6 | 10 | 11 | 12 | 13 | 12 SP1/13 SP1 | 14 | 14 | 15 | 15 SP1 | 15 SP2 | |
| Changing the OID of the Data Type (NCHAR type) that Handles National Characters | Y | Y | Y | Y | Y | Y | Y | Y | Y | N | N | N | 
| Changed the Specification Method of the Application Connection Switch Feature | Y | Y | Y | Y | Y | Y | Y | Y | Y | N | N | N | 
| Changes in ecpg/ecobpg Handling of Zero-Length Unicode Identifiers | Y | Y | Y | Y | Y | Y | Y | Y | Y | N | N | N | 
| Changing the display result when data masking is applied to NaN, infinity, -infinity | Y | Y | Y | Y | Y | Y | Y | N | N | N | N | N | 
| Changing the Valid Range of Identifiers Defined by the DECLARE STATEMENT statement | Y | Y | Y | Y | Y | Y | Y | N | N | N | N | N | 
| Y | Y | Y | Y | Y | Y | Y | N | N | N | N | N | |
| Y | Y | Y | Y | Y | Y | Y | N | N | N | N | N | |
| Y | Y | Y | Y | Y | N | N | N | N | N | N | N | |
| Y | Y | Y | Y | Y | N | N | N | N | N | N | N | |
| Changed to Error when Running an Operator or Function that Returns non Data Types for Masking Type | Y | Y | Y | Y | N | N | N | N | N | N | N | N | 
| Changing the method of specifying the application connection switch feature | Y | Y | N | N | N | N | N | N | N | N | N | N | 
| PostgreSQL compatibility of embedded SQL applications in C and COBOL | Y | Y | N | N | N | N | N | N | N | N | N | N | 
| Y | Y | N | N | N | N | N | N | N | N | N | N | |
| Changing how to use the features compatible with Oracle databases | Y | N | N | N | N | N | N | N | N | N | N | N | 
Y: Incompatibility exists
N: Incompatibility does not exist