refactor: match the ROUND and current-time names where they are read

With main merged, the conversion constants file reached 2,005 lines, over
the 2,000-line limit. The names sit in output_names.rs as match literals,
as calls.rs writes them.

Author: kvlonge

crates/sqlquack-rules/src/conversion/_helpers/queries/output_names.rs

@@ -7,7 +7,7 @@ use crate::conversion::_helpers::support::tree::{
 };
 use crate::conversion::constants::{
     OUTPUT_NAMED_AGGREGATES, OUTPUT_NAMED_ARITHMETIC, OUTPUT_NAMED_CAST_ENDINGS,
-    OUTPUT_NAMED_CURRENT_TIME, OUTPUT_NAMED_FUNCTIONS, OUTPUT_NAMED_ROUND,
+    OUTPUT_NAMED_FUNCTIONS,
 };
 
 /// Whether an unaliased item written as `text` has a shape whose name receipts record.
@@ -38,9 +38,12 @@ pub(crate) fn recorded_name_shape(item: &Value, text: &str) -> bool {
         }
         "function" if arguments.is_empty() => {
             only(&["name", "args", "no_parens"])
-                && OUTPUT_NAMED_CURRENT_TIME.contains(&text.to_ascii_uppercase().as_str())
+                && matches!(
+                    text.to_ascii_uppercase().as_str(),
+                    "CURRENT_DATE()" | "CURRENT_DATE" | "CURRENT_TIMESTAMP()"
+                )
         }
-        "function" if named(&[OUTPUT_NAMED_ROUND]) => {
+        "function" if named(&["ROUND"]) => {
             only(&["name", "args"])
                 && arguments.get(2).is_none()
                 && arguments.first().is_some_and(plain_column)

crates/sqlquack-rules/src/conversion/constants.rs

@@ -1998,8 +1998,3 @@ pub(crate) const OUTPUT_NAMED_FUNCTIONS: &[&str] = &["LOWER", "UPPER", "COALESCE
 pub(crate) const OUTPUT_NAMED_ARITHMETIC: &[&str] = &["add", "sub", "mul", "div"];
 /// The cast target spellings whose unaliased column names receipts record.
 pub(crate) const OUTPUT_NAMED_CAST_ENDINGS: &[&str] = &[" AS INTEGER)", "::INTEGER"];
-/// ROUND, whose unaliased column names receipts record for a column and an integer scale.
-pub(crate) const OUTPUT_NAMED_ROUND: &str = "ROUND";
-/// The current-time items, as written upper-cased, whose unaliased column names receipts record.
-pub(crate) const OUTPUT_NAMED_CURRENT_TIME: &[&str] =
-    &["CURRENT_DATE()", "CURRENT_DATE", "CURRENT_TIMESTAMP()"];