ekuiper-new/etc/functions/echo.json

{
	"about": {
		"trial": false,
		"author": {
			"name": "EMQ",
			"email": "contact@emqx.io",
			"company": "EMQ Technologies Co., Ltd",
			"website": "https://www.emqx.io"
		},
		"helpUrl": {
      "en_US": "https://github.com/lf-edge/ekuiper/blob/master/docs/en_US/sqls/custom_functions.md",
      "zh_CN": "https://github.com/lf-edge/ekuiper/blob/master/docs/zh_CN/sqls/custom_functions.md"
		},
		"description": {
			"en_US": "",
			"zh_CN": ""
		}
	},
	"functions": [{
		"name": "echo",
		"example": "echo(col1)",
		"hint": {
			"en_US": "The parameter value is output as it is.",
			"zh_CN": "原样输出参数值。"
		}
	}]
}