Strip precision from TIMESTAMP data types in %ROWTYPE fields

ALL_TAB_COLUMNS.DATA_TYPE includes precision for TIMESTAMP and
INTERVAL types (e.g., TIMESTAMP(6) WITH LOCAL TIME ZONE) even when
declared without explicit precision. Strip it to match the exact
strings expected by type mapping in oci_connection.rb, jdbc_connection.rb,
and procedure_call.rb.

Uses the same approach as table.rb: data_type.sub(/\(\d+\)/, "")

Co-Authored-By: Jochen Schug <4573581+joschug@users.noreply.github.com>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: 3 people

lib/plsql/procedure.rb

@@ -397,6 +397,9 @@ def get_field_definitions(argument_metadata) # :nodoc:
 
           col_no, col_name, col_type_name, col_length, col_precision, col_scale, col_char_length, col_char_used = r
 
+          # remove scale (n) from data_type (returned for TIMESTAMPs and INTERVALs)
+          col_type_name = col_type_name.sub(/\(\d+\)/, "")
+
           fields[col_name.downcase.to_sym] = {
             position: col_no.to_i,
             data_type: col_type_name,

spec/plsql/procedure_spec.rb

@@ -2427,6 +2427,44 @@ def new_candidate(status)
   end
 end
 
+describe "Function with TIMESTAMP columns in %ROWTYPE" do
+  before(:all) do
+    plsql.connect! CONNECTION_PARAMS
+    plsql.execute "DROP FUNCTION test_timestamp_fn" rescue nil
+    plsql.execute "DROP TABLE test_timestamp_tbl" rescue nil
+    plsql.execute <<-SQL
+      CREATE TABLE test_timestamp_tbl (
+        id NUMBER,
+        ts TIMESTAMP,
+        ts_tz TIMESTAMP WITH TIME ZONE,
+        ts_ltz TIMESTAMP WITH LOCAL TIME ZONE
+      )
+    SQL
+    plsql.execute <<-SQL
+      CREATE OR REPLACE FUNCTION test_timestamp_fn(p_rec test_timestamp_tbl%ROWTYPE)
+        RETURN NUMBER
+      IS
+      BEGIN
+        RETURN p_rec.id;
+      END;
+    SQL
+  end
+
+  after(:all) do
+    plsql.execute "DROP FUNCTION test_timestamp_fn" rescue nil
+    plsql.execute "DROP TABLE test_timestamp_tbl" rescue nil
+    plsql.logoff
+  end
+
+  it "should strip precision from TIMESTAMP data types in %ROWTYPE fields" do
+    procedure = PLSQL::Procedure.find(plsql, :test_timestamp_fn)
+    fields = procedure.arguments[0][:p_rec][:fields]
+    expect(fields[:ts][:data_type]).to eq("TIMESTAMP")
+    expect(fields[:ts_tz][:data_type]).to eq("TIMESTAMP WITH TIME ZONE")
+    expect(fields[:ts_ltz][:data_type]).to eq("TIMESTAMP WITH LOCAL TIME ZONE")
+  end
+end
+
 describe "Function with TABLE OF %ROWTYPE parameter defined in package" do
   before(:all) do
     plsql.connect! CONNECTION_PARAMS