fix sqlite reading of empty values

dbueno · dbueno · commit 0f90e2588e3b · 2023-05-16T08:53:22.000-06:00
closes #2411
diff --git a/src/include/souffle/io/ReadStreamSQLite.h b/src/include/souffle/io/ReadStreamSQLite.h
@@ -66,12 +66,12 @@ class ReadStreamSQLite : public ReadStream {
         for (column = 0; column < arity; column++) {
             std::string element;
             if (0 == sqlite3_column_bytes(selectStatement, column)) {
-                element = "n/a";
+                element = "";
             } else {
                 element = reinterpret_cast<const char*>(sqlite3_column_text(selectStatement, column));
 
                 if (element.empty()) {
-                    element = "n/a";
+                    element = "";
                 }
             }
 

Original file line number	Diff line number	Diff line change
`@@ -66,12 +66,12 @@ class ReadStreamSQLite : public ReadStream {`
`66`	`66`	`for (column = 0; column < arity; column++) {`
`67`	`67`	`std::string element;`
`68`	`68`	`if (0 == sqlite3_column_bytes(selectStatement, column)) {`
`69`		`- element = "n/a";`
	`69`	`+ element = "";`
`70`	`70`	`} else {`
`71`	`71`	`element = reinterpret_cast<const char*>(sqlite3_column_text(selectStatement, column));`
`72`	`72`
`73`	`73`	`if (element.empty()) {`
`74`		`- element = "n/a";`
	`74`	`+ element = "";`
`75`	`75`	`}`
`76`	`76`	`}`
`77`	`77`