Add 2.3.0-to-2.4.0 upgrade: re-apply growth/VLF columns

Servers that upgraded to 2.3.0 before PR #625 shipped don't have
the is_percent_growth, growth_pct, and vlf_count columns. This
re-applies the idempotent ALTER TABLE from the 2.2.0-to-2.3.0
upgrade for those servers.

Author: erikdarlingdata

upgrades/2.3.0-to-2.4.0/01_add_growth_vlf_columns.sql

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+/*
+Copyright 2026 Darling Data, LLC
+https://www.erikdarling.com/
+
+Upgrade from 2.3.0 to 2.4.0
+Re-applies growth/VLF columns for servers that upgraded to 2.3.0 before PR #625 shipped
+Adds growth settings and VLF count columns to collect.database_size_stats:
+
+database_size_stats:
+  - is_percent_growth: new column (bit NULL) — true when auto-growth is percent-based
+  - growth_pct:        new column (integer NULL) — raw growth percent value (set when is_percent_growth = 1)
+  - vlf_count:         new column (integer NULL) — VLF count for log files (NULL for data files)
+*/
+
+SET ANSI_NULLS ON;
+SET ANSI_PADDING ON;
+SET ANSI_WARNINGS ON;
+SET ARITHABORT ON;
+SET CONCAT_NULL_YIELDS_NULL ON;
+SET QUOTED_IDENTIFIER ON;
+SET NUMERIC_ROUNDABORT OFF;
+SET IMPLICIT_TRANSACTIONS OFF;
+SET STATISTICS TIME, IO OFF;
+GO
+
+USE PerformanceMonitor;
+GO
+
+/*
+database_size_stats: add growth settings and VLF count columns
+*/
+IF OBJECT_ID(N'collect.database_size_stats', N'U') IS NOT NULL
+BEGIN
+    PRINT 'Checking collect.database_size_stats columns...';
+
+    IF NOT EXISTS
+    (
+        SELECT
+            1/0
+        FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE TABLE_SCHEMA = N'collect'
+        AND   TABLE_NAME = N'database_size_stats'
+        AND   COLUMN_NAME = N'is_percent_growth'
+    )
+    BEGIN
+        ALTER TABLE collect.database_size_stats ADD is_percent_growth bit NULL;
+        PRINT '  is_percent_growth: added (bit NULL)';
+    END;
+
+    IF NOT EXISTS
+    (
+        SELECT
+            1/0
+        FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE TABLE_SCHEMA = N'collect'
+        AND   TABLE_NAME = N'database_size_stats'
+        AND   COLUMN_NAME = N'growth_pct'
+    )
+    BEGIN
+        ALTER TABLE collect.database_size_stats ADD growth_pct integer NULL;
+        PRINT '  growth_pct: added (integer NULL)';
+    END;
+
+    IF NOT EXISTS
+    (
+        SELECT
+            1/0
+        FROM INFORMATION_SCHEMA.COLUMNS
+        WHERE TABLE_SCHEMA = N'collect'
+        AND   TABLE_NAME = N'database_size_stats'
+        AND   COLUMN_NAME = N'vlf_count'
+    )
+    BEGIN
+        ALTER TABLE collect.database_size_stats ADD vlf_count integer NULL;
+        PRINT '  vlf_count: added (integer NULL)';
+    END;
+
+    PRINT 'database_size_stats complete.';
+END;
+ELSE
+BEGIN
+    PRINT 'collect.database_size_stats not found — skipping.';
+END;
+GO
+
+PRINT 'Upgrade 03_add_growth_vlf_columns complete.';
+GO

upgrades/2.3.0-to-2.4.0/upgrade.txt

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+01_add_growth_vlf_columns.sql