1. 实现配置文件解析

2. 实现数据库连接

vendor/gorm.io/gorm/clause/insert.go

@@ -0,0 +1,39 @@
+package clause
+
+type Insert struct {
+	Table    Table
+	Modifier string
+}
+
+// Name insert clause name
+func (insert Insert) Name() string {
+	return "INSERT"
+}
+
+// Build build insert clause
+func (insert Insert) Build(builder Builder) {
+	if insert.Modifier != "" {
+		builder.WriteString(insert.Modifier)
+		builder.WriteByte(' ')
+	}
+
+	builder.WriteString("INTO ")
+	if insert.Table.Name == "" {
+		builder.WriteQuoted(currentTable)
+	} else {
+		builder.WriteQuoted(insert.Table)
+	}
+}
+
+// MergeClause merge insert clause
+func (insert Insert) MergeClause(clause *Clause) {
+	if v, ok := clause.Expression.(Insert); ok {
+		if insert.Modifier == "" {
+			insert.Modifier = v.Modifier
+		}
+		if insert.Table.Name == "" {
+			insert.Table = v.Table
+		}
+	}
+	clause.Expression = insert
+}