refactor: move dialect-specific logic to dialects and replace mssql alias with sqlsrv

- Move monitoring methods (getActiveQueries, getActiveConnections, getSlowQueries) to DialectInterface
- Move listTables method to DialectInterface
- Move error handling methods (getRetryableErrorCodes, getErrorDescription) to DialectInterface
- Move getInsertSelectColumns method to DialectInterface for MSSQL IDENTITY handling
- Move config methods (buildConfigFromEnv, normalizeConfigParams) to DialectInterface
- Add formatConcatExpression method to DialectInterface for dialect-specific concatenation
- Refactor MonitorManager to use dialect methods instead of match/case
- Refactor TableManager to use dialect->listTables() instead of if statements
- Refactor ErrorUtilityTrait to use trait methods with dialect fallback
- Refactor FileLoader to use dialect->quoteIdentifier() instead of match
- Refactor DmlQueryBuilder to use dialect->getInsertSelectColumns()
- Refactor DialectAbstract::concat() to use formatConcatExpression()
- Refactor InitWizard and BaseCliCommand to use dialect->buildConfigFromEnv()
- Remove mssql alias from DialectRegistry (use only sqlsrv)
- Remove mssql->sqlsrv normalization from BaseCliCommand, InitWizard, ErrorUtilityTrait
- Rename config.mssql.php to config.sqlsrv.php
- Update all references to use sqlsrv driver name
- Update examples and documentation to use sqlsrv instead of mssql

This refactoring follows Open/Closed Principle - new dialects can be added without modifying common classes.

Author: tommyknocker

README.md

@@ -300,7 +300,7 @@ PDODB_DRIVER=mysql php 01-basic/02-simple-crud.php
 # PostgreSQL (update config.pgsql.php with your credentials)
 PDODB_DRIVER=pgsql php 01-basic/02-simple-crud.php
 
-# Microsoft SQL Server (update config.mssql.php with your credentials)
+# Microsoft SQL Server (update config.sqlsrv.php with your credentials)
 PDODB_DRIVER=sqlsrv php 01-basic/02-simple-crud.php
 
 # Test all examples on all available databases
@@ -312,7 +312,7 @@ PDODB_DRIVER=sqlsrv php 01-basic/02-simple-crud.php
 - `mysql` - uses `config.mysql.php`
 - `mariadb` - uses `config.mariadb.php`
 - `pgsql` - uses `config.pgsql.php`
-- `sqlsrv` - uses `config.mssql.php`
+- `sqlsrv` - uses `config.sqlsrv.php`
 
 If config file is missing, falls back to SQLite.
 

examples/01-basic/01-connection.php

@@ -82,7 +82,7 @@ function tryConnect($driver, $configFile) {
 
 // Example 4: Microsoft SQL Server Connection (if config exists)
 echo "4. Connecting to Microsoft SQL Server...\n";
-$mssqlConfig = __DIR__ . '/../config.mssql.php';
+$mssqlConfig = __DIR__ . '/../config.sqlsrv.php';
 $mssql = tryConnect('sqlsrv', $mssqlConfig);
 
 if ($mssql instanceof PdoDb) {
@@ -91,10 +91,10 @@ function tryConnect($driver, $configFile) {
     echo "  Server: {$config['host']}:{$config['port']}\n";
     echo "  Database: {$config['dbname']}\n\n";
 } elseif ($mssql === false) {
-    echo "  (Check your MSSQL server and config.mssql.php settings)\n\n";
+    echo "  (Check your MSSQL server and config.sqlsrv.php settings)\n\n";
 } else {
     echo "  ℹ️  Config not found: $mssqlConfig\n";
-    echo "  (This is OK - MSSQL is optional. Create config.mssql.php to test)\n\n";
+    echo "  (This is OK - MSSQL is optional. Create config.sqlsrv.php to test)\n\n";
 }
 
 // Example 5: Connection pooling (without default connection)
@@ -119,4 +119,4 @@ function tryConnect($driver, $configFile) {
 echo "✓ $result\n\n";
 
 echo "All connection examples completed!\n";
-echo "\nℹ️  Tip: Create config.mysql.php, config.pgsql.php, and config.mssql.php to test all databases\n";
+echo "\nℹ️  Tip: Create config.mysql.php, config.pgsql.php, and config.sqlsrv.php to test all databases\n";

examples/01-basic/README.md

@@ -80,7 +80,7 @@ PDODB_DRIVER=pgsql php 01-connection.php
 
 ### MSSQL
 ```bash
-PDODB_DRIVER=mssql php 01-connection.php
+PDODB_DRIVER=sqlsrv php 01-connection.php
 ```
 
 ## Next Steps

examples/03-advanced/07-window-functions.php

@@ -8,7 +8,7 @@
 
 $driverEnv = getenv('PDODB_DRIVER') ?: 'mysql';
 $config = getExampleConfig();
-$driver = $config['driver'] ?? $driverEnv; // Use driver from config (converts mssql to sqlsrv)
+$driver = $config['driver'] ?? $driverEnv;
 
 echo "=== Window Functions Examples ===\n\n";
 echo "Database: $driver\n\n";

examples/03-advanced/08-basic-cte.php

@@ -10,7 +10,7 @@
 
 $driverEnv = getenv('PDODB_DRIVER') ?: 'sqlite';
 $config = getExampleConfig();
-$driver = $config['driver'] ?? $driverEnv; // Use driver from config (converts mssql to sqlsrv)
+$driver = $config['driver'] ?? $driverEnv;
 
 echo "=== Common Table Expressions (CTEs) Examples ===\n\n";
 echo "Database: $driver\n\n";

examples/03-advanced/09-recursive-cte.php

@@ -10,7 +10,7 @@
 
 $driverEnv = getenv('PDODB_DRIVER') ?: 'sqlite';
 $config = getExampleConfig();
-$driver = $config['driver'] ?? $driverEnv; // Use driver from config (converts mssql to sqlsrv)
+$driver = $config['driver'] ?? $driverEnv;
 
 echo "=== Recursive CTE Examples ===\n\n";
 echo "Database: $driver\n\n";

examples/08-architecture/01-read-write-splitting.php

@@ -17,7 +17,6 @@
 
 $driverEnv = getenv('PDODB_DRIVER') ?: 'mysql';
 $config = getExampleConfig();
-// Use driver from config (converts mssql to sqlsrv)
 $driver = $config['driver'] ?? $driverEnv;
 
 // For SQLite, use a temporary file instead of :memory: for read/write splitting

examples/08-architecture/04-sticky-writes.php

@@ -17,7 +17,6 @@
 
 $driverEnv = getenv('PDODB_DRIVER') ?: 'mysql';
 $config = getExampleConfig();
-// Use driver from config (converts mssql to sqlsrv)
 $driver = $config['driver'] ?? $driverEnv;
 
 // For SQLite, use a temporary file instead of :memory: for read/write splitting

examples/README.md

@@ -42,12 +42,12 @@ PDODB_DRIVER=pgsql php 01-basic/02-simple-crud.php
 
 ### Option 5: Microsoft SQL Server (MSSQL)
 ```bash
-# Edit config.mssql.php with your credentials
+# Edit config.sqlsrv.php with your credentials
 # File already exists in examples/ directory
-nano config.mssql.php
+nano config.sqlsrv.php
 
 # Run with MSSQL
-PDODB_DRIVER=mssql php 01-basic/02-simple-crud.php
+PDODB_DRIVER=sqlsrv php 01-basic/02-simple-crud.php
 ```
 
 ### Test All Examples on All Databases
@@ -69,14 +69,14 @@ PDOdb examples use **separate config files per database**:
 | `config.mysql.php` | MySQL | ✅ Included, update credentials |
 | `config.mariadb.php` | MariaDB | ✅ Included, update credentials |
 | `config.pgsql.php` | PostgreSQL | ✅ Included, update credentials |
-| `config.mssql.php` | Microsoft SQL Server | ✅ Included, update credentials |
+| `config.sqlsrv.php` | Microsoft SQL Server | ✅ Included, update credentials |
 
 **Environment variable `PDODB_DRIVER`** controls which config to use:
 - `sqlite` (default) - loads `config.sqlite.php`
 - `mysql` - loads `config.mysql.php`
 - `mariadb` - loads `config.mariadb.php`
 - `pgsql` - loads `config.pgsql.php`
-- `mssql` - loads `config.mssql.php`
+- `sqlsrv` - loads `config.sqlsrv.php`
 
 **No environment variable?** Defaults to SQLite with `:memory:` database.