Include mysql column comments into generated types

generator/metadata/column_meta_data.go

@@ -7,6 +7,7 @@ type Column struct {
 	IsNullable   bool
 	IsGenerated  bool
 	DataType     DataType
+	Comment      string
 }
 
 // DataTypeKind is database type kind(base, enum, user-defined, array)

generator/mysql/query_set.go

@@ -35,7 +35,8 @@ ORDER BY table_name;
 func (m mySqlQuerySet) GetTableColumnsMetaData(db *sql.DB, schemaName string, tableName string) []metadata.Column {
 	query := `
 SELECT COLUMN_NAME AS "column.Name", 
-	IS_NULLABLE = "YES" AS "column.IsNullable", 
+	IS_NULLABLE = "YES" AS "column.IsNullable",
+	columns.COLUMN_COMMENT as "column.Comment",
 	(EXISTS(
 		SELECT 1
 		FROM information_schema.table_constraints t

generator/template/file_templates.go

@@ -29,10 +29,10 @@ var {{tableTemplate.InstanceName}} = new{{tableTemplate.TypeName}}("{{schemaName
 type {{structImplName}} struct {
 	{{dialect.PackageName}}.Table
 	
-	//Columns
+	// Columns
 {{- range $i, $c := .Columns}}
 {{- $field := columnField $c}}
-	{{$field.Name}} {{dialect.PackageName}}.Column{{$field.Type}}
+	{{$field.Name}} {{dialect.PackageName}}.Column{{$field.Type}} {{- if $c.Comment }} // {{$c.Comment}} {{end}}
 {{- end}}
 
 	AllColumns     {{dialect.PackageName}}.ColumnList
@@ -123,7 +123,7 @@ import (
 type {{$modelTableTemplate.TypeName}} struct {
 {{- range .Columns}}
 {{- $field := structField .}}
-	{{$field.Name}} {{$field.Type.Name}} ` + "{{$field.TagsString}}" + `
+	{{$field.Name}} {{$field.Type.Name}} ` + "{{$field.TagsString}}" + ` {{- if .Comment }} // {{.Comment}} {{end}}
 {{- end}}
 }