```

fix(database): 修复SQLite迁移中自增主键的定义问题

- 修复了自增列同时标记为主键时重复添加PRIMARY KEY约束的问题
- 确保自增主键列只添加一次PRIMARY KEY约束
- 优化了复合主键约束的添加逻辑，避免与自增约束冲突
- 修正了自增主键的类型定义为INTEGER以符合SQLite规范
```

database/drivers/sqlite/sqlite_migration.go

@@ -52,14 +52,16 @@ func (m *Migration) CreateTable(ctx context.Context, table string, columns map[s
 	var primaryKeys []string
 	for name, def := range columns {
 		colDef := m.buildColumnDefinition(name, def)
-		if def.PrimaryKey {
+		// Only add to primaryKeys if it's not an auto-increment column
+		// (auto-increment columns already have PRIMARY KEY in their definition)
+		if def.PrimaryKey && !def.AutoIncrement {
 			primaryKeys = append(primaryKeys, database.QuoteIdentifier(name))
 		}
 		colDefs = append(colDefs, "    "+colDef)
 	}
 
-	// Add primary key constraint if needed
+	// Add composite primary key constraint if needed (for non-auto-increment keys)
-	if len(primaryKeys) > 0 {
+	if len(primaryKeys) > 1 {
 		colDefs = append(colDefs, fmt.Sprintf("    PRIMARY KEY (%s)", strings.Join(primaryKeys, ", ")))
 	}
 
@@ -74,30 +76,27 @@ func (m *Migration) buildColumnDefinition(name string, def *database.ColumnDefin
 	var parts []string
 	parts = append(parts, database.QuoteIdentifier(name))
 
-	// Handle SQLite-specific types
+	// Handle SQLite-specific types for auto-increment primary key
-	dbType := def.Type
-	if def.AutoIncrement && def.PrimaryKey {
-		if dbType == "INT" || dbType == "INTEGER" {
-			dbType = "INTEGER"
-		}
-	}
-	parts = append(parts, dbType)
-
 	if def.PrimaryKey && def.AutoIncrement {
-		parts = append(parts, "PRIMARY KEY AUTOINCREMENT")
+		// SQLite requires INTEGER type for AUTOINCREMENT
-	} else {
+		parts = append(parts, "INTEGER PRIMARY KEY AUTOINCREMENT")
-		if !def.Null {
+		return strings.Join(parts, " ")
-			parts = append(parts, "NOT NULL")
+	}
-		}
 
-		if def.Unique && !def.PrimaryKey {
+	// Regular column definition
-			parts = append(parts, "UNIQUE")
+	parts = append(parts, def.Type)
-		}
 
-		if def.Default != nil {
+	if !def.Null {
-			defaultValue := formatDefaultValue(def.Default)
+		parts = append(parts, "NOT NULL")
-			parts = append(parts, fmt.Sprintf("DEFAULT %s", defaultValue))
+	}
-		}
+
+	if def.Unique && !def.PrimaryKey {
+		parts = append(parts, "UNIQUE")
+	}
+
+	if def.Default != nil {
+		defaultValue := formatDefaultValue(def.Default)
+		parts = append(parts, fmt.Sprintf("DEFAULT %s", defaultValue))
 	}
 
 	return strings.Join(parts, " ")

database/drivers/sqlitecgo/sqlitecgo.go

@@ -50,3 +50,9 @@ func (d *Driver) New(core *database.Core, node *database.ConfigNode) (database.D
 func (d *Driver) GetChars() (charLeft string, charRight string) {
 	return quoteChar, quoteChar
 }
+
+// GetMigration returns a Migration instance implementing the Migration interface.
+// Note: sqlitecgo driver does not have migration support yet, returns nil.
+func (d *Driver) GetMigration() database.Migration {
+	return nil
+}

database/gdb_migration_auto.go

@@ -9,6 +9,8 @@ package database
 import (
 	"context"
 	"fmt"
+	"os"
+	"path/filepath"
 	"reflect"
 	"strings"
 	"time"
@@ -46,6 +48,13 @@ func (am *AutoMigrateCore) migrateEntity(ctx context.Context, entity any) error
 		return fmt.Errorf("no columns found for table %s", tableName)
 	}
 
+	// For SQLite, ensure the database file directory exists
+	if am.db.GetConfig().Type == "sqlite" {
+		if err := am.ensureSQLiteDirectory(); err != nil {
+			return fmt.Errorf("failed to prepare SQLite database: %w", err)
+		}
+	}
+
 	// Check if table exists
 	hasTable, err := am.db.HasTable(ctx, tableName)
 	if err != nil {
@@ -450,3 +459,41 @@ func IsZeroValue(v any) bool {
 	}
 	return false
 }
+
+// ensureSQLiteDirectory ensures the SQLite database file directory exists.
+func (am *AutoMigrateCore) ensureSQLiteDirectory() error {
+	config := am.db.GetConfig()
+	if config.Type != "sqlite" {
+		return nil
+	}
+
+	// Get the database file path from config.Name or config.Link
+	dbPath := config.Name
+	if dbPath == "" && config.Link != "" {
+		// Parse link format: sqlite::@file(./data/company.db)
+		if strings.Contains(config.Link, "@file(") {
+			start := strings.Index(config.Link, "@file(") + 6
+			end := strings.Index(config.Link[start:], ")")
+			if end > 0 {
+				dbPath = config.Link[start : start+end]
+			}
+		}
+	}
+
+	if dbPath == "" {
+		return fmt.Errorf("SQLite database path is empty")
+	}
+
+	// Get directory path
+	dir := filepath.Dir(dbPath)
+
+	// Check if directory exists
+	if _, err := os.Stat(dir); os.IsNotExist(err) {
+		// Create directory with all parents
+		if err := os.MkdirAll(dir, 0755); err != nil {
+			return fmt.Errorf("failed to create directory %s: %w", dir, err)
+		}
+	}
+
+	return nil
+}