feat: add arithmetic to benches (#29)

# Rationale for this change
We need to add new some benches now that we have more features.
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# What changes are included in this PR?
Add a new bench query
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# Are these changes tested?
N/A
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crates/proof-of-sql/benches/scaffold/querys.rs

@@ -27,6 +27,21 @@ const MULTI_COLUMN_FILTER_COLUMNS: &[(&str, ColumnType, OptionalRandBound)] = &[
     ),
     ("c", ColumnType::VarChar, None),
 ];
+const ARITHMETIC_TITLE: &str = "Arithmetic";
+const ARITHMETIC_SQL: &str = "SELECT a + b as r0, a * b - 2 as r1, c FROM table WHERE a >= b";
+const ARITHMETIC_COLUMNS: &[(&str, ColumnType, OptionalRandBound)] = &[
+    (
+        "a",
+        ColumnType::BigInt,
+        Some(|size| (size / 10).max(10) as i64),
+    ),
+    (
+        "b",
+        ColumnType::BigInt,
+        Some(|size| (size / 10).max(10) as i64),
+    ),
+    ("c", ColumnType::VarChar, None),
+];
 
 #[allow(clippy::type_complexity)]
 pub const QUERIES: &[(&str, &str, &[(&str, ColumnType, OptionalRandBound)])] = &[
@@ -40,4 +55,5 @@ pub const QUERIES: &[(&str, &str, &[(&str, ColumnType, OptionalRandBound)])] = &
         MULTI_COLUMN_FILTER_SQL,
         MULTI_COLUMN_FILTER_COLUMNS,
     ),
+    (ARITHMETIC_TITLE, ARITHMETIC_SQL, ARITHMETIC_COLUMNS),
 ];