| SubstrFunctionExtension |   | 97% | | 88% | 8 | 31 | 4 | 76 | 3 | 7 | 0 | 1 |
| EqualsIgnoreCaseFunctionExtension | | 90% | | 87% | 4 | 11 | 4 | 20 | 3 | 7 | 0 | 1 |
| ContainsFunctionExtension | | 93% | | 91% | 4 | 14 | 4 | 25 | 3 | 8 | 0 | 1 |
| SplitFunctionExtension | | 97% | | 100% | 3 | 14 | 3 | 31 | 3 | 7 | 0 | 1 |
| RegexpFunctionExtension | | 96% | | 100% | 3 | 14 | 3 | 32 | 3 | 7 | 0 | 1 |
| ReplaceFirstFunctionExtension | | 96% | | 100% | 3 | 14 | 3 | 28 | 3 | 7 | 0 | 1 |
| ReplaceAllFunctionExtension | | 96% | | 100% | 3 | 14 | 3 | 28 | 3 | 7 | 0 | 1 |
| CharAtFunctionExtension | | 96% | | 100% | 3 | 12 | 3 | 24 | 3 | 7 | 0 | 1 |
| RepeatFunctionExtension | | 96% | | 100% | 3 | 13 | 3 | 25 | 3 | 7 | 0 | 1 |
| StrcmpFunctionExtension | | 95% | | 100% | 3 | 12 | 3 | 22 | 3 | 7 | 0 | 1 |
| CoalesceFunctionExtension | | 95% | | 100% | 3 | 12 | 3 | 20 | 3 | 7 | 0 | 1 |
| UnhexFunctionExtension | | 94% | | 100% | 3 | 11 | 3 | 20 | 3 | 7 | 0 | 1 |
| HexFunctionExtension | | 94% | | 100% | 3 | 11 | 3 | 19 | 3 | 7 | 0 | 1 |
| ReverseFunctionExtension | | 93% | | 100% | 3 | 10 | 3 | 16 | 3 | 7 | 0 | 1 |
| LengthFunctionExtension | | 92% | | 100% | 3 | 10 | 3 | 15 | 3 | 7 | 0 | 1 |
| TrimFunctionExtension | | 92% | | 100% | 3 | 10 | 3 | 15 | 3 | 7 | 0 | 1 |
| LowerFunctionExtension | | 92% | | 100% | 3 | 10 | 3 | 15 | 3 | 7 | 0 | 1 |
| UpperFunctionExtension | | 92% | | 100% | 3 | 10 | 3 | 15 | 3 | 7 | 0 | 1 |
| ConcatFunctionExtension | | 91% | | 100% | 3 | 10 | 3 | 14 | 3 | 7 | 0 | 1 |
| SubstrFunctionExtension.SubstrType | | 91% | | n/a | 1 | 4 | 0 | 2 | 1 | 4 | 0 | 1 |
| SubstrFunctionExtension.new Object() {...} | | 87% | | n/a | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 |