mghildiy edited a comment on pull request #1368:
URL: https://github.com/apache/cassandra/pull/1368#issuecomment-1001043882
I think there is still some thing I am missing in code.
I modified one of the existing test as:
```
createTable("CREATE TABLE %s (a tinyint, b smallint, c int, d bigint, e
float, f double, g varint, h decimal, i text, j text, PRIMARY KEY(a, b, c))");
execute("INSERT INTO %S (a, b, c, d, e, f, g, h, i, j) VALUES (1, 2, 3, 4,
5.5, 6.5, 7, 8.5, 'John', 'Doe')");
// Test additions
UntypedResultSet rs = execute("SELECT a + a, b + a, c + a, d + a, e + a, f +
a, g + a, h + a, i + j FROM %s WHERE a = 1 AND b = 2 AND c = 1 + 2");
```
During debugging for above, I observe that Collection<Function> instance
returned by FunctionResolver.collectCandidates for i and j doesn't have the
function for our desired combination (text/ascii, text/ascii).
**Note**:
In OperationFcts.java, I see NumericOperationFunction,
TemporalOperationFunction implemented. Maybe I need to implement a similar
class for string types.
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