update:

- pgsql 获取表名, 获取表字段(todo), 获取数据库名
refactor:
- 自动化代码与自动化代码历史 代码规范化
- mysql 获取表名, 获取表字段, 获取数据库名
- enter 代码优化

server/service/system/sys_auto_code_mysql.go

@@ -0,0 +1,55 @@
+package system
+
+import (
+	"github.com/flipped-aurora/gin-vue-admin/server/global"
+	"github.com/flipped-aurora/gin-vue-admin/server/model/system/response"
+)
+
+var AutoCodeMysql = new(autoCodeMysql)
+
+type autoCodeMysql struct{}
+
+// GetDB 获取数据库的所有数据库名
+// Author [piexlmax](https://github.com/piexlmax)
+// Author [SliverHorn](https://github.com/SliverHorn)
+func (s *autoCodeMysql) GetDB() (data []response.Db, err error) {
+	var entities []response.Db
+	sql := "SELECT SCHEMA_NAME AS `database` FROM INFORMATION_SCHEMA.SCHEMATA;"
+	err = global.GVA_DB.Raw(sql).Scan(&entities).Error
+	return entities, err
+}
+
+// GetTables 获取数据库的所有表名
+// Author [piexlmax](https://github.com/piexlmax)
+// Author [SliverHorn](https://github.com/SliverHorn)
+func (s *autoCodeMysql) GetTables(dbName string) (data []response.Table, err error) {
+	var entities []response.Table
+	sql := `select table_name as table_name from information_schema.tables where table_schema = ?`
+	err = global.GVA_DB.Raw(sql, dbName).Scan(&entities).Error
+	return entities, err
+}
+
+// GetColumn 获取指定数据库和指定数据表的所有字段名,类型值等
+// Author [piexlmax](https://github.com/piexlmax)
+// Author [SliverHorn](https://github.com/SliverHorn)
+func (s *autoCodeMysql) GetColumn(tableName string, dbName string) (data []response.Column, err error) {
+	var entities []response.Column
+	sql := `
+	SELECT COLUMN_NAME        column_name,
+       DATA_TYPE          data_type,
+       CASE DATA_TYPE
+           WHEN 'longtext' THEN c.CHARACTER_MAXIMUM_LENGTH
+           WHEN 'varchar' THEN c.CHARACTER_MAXIMUM_LENGTH
+           WHEN 'double' THEN CONCAT_WS(',', c.NUMERIC_PRECISION, c.NUMERIC_SCALE)
+           WHEN 'decimal' THEN CONCAT_WS(',', c.NUMERIC_PRECISION, c.NUMERIC_SCALE)
+           WHEN 'int' THEN c.NUMERIC_PRECISION
+           WHEN 'bigint' THEN c.NUMERIC_PRECISION
+           ELSE '' END AS data_type_long,
+       COLUMN_COMMENT     column_comment
+	FROM INFORMATION_SCHEMA.COLUMNS c
+	WHERE table_name = ?
+	  AND table_schema = ?
+	`
+	err = global.GVA_DB.Raw(sql, tableName, dbName).Scan(&entities).Error
+	return entities, err
+}