{
  "name": "join",
  "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/query_language_elements.md",
      "zh_CN": "https://github.com/lf-edge/ekuiper/blob/master/docs/zh_CN/sqls/query_language_elements.md"
    },
    "description": {
      "en_US": "An operation to combine rows from two or more tables, based on a related column between them.",
      "zh_CN": "用于基于两个或多个表之间的相关列连接行的操作。"
    }
  },
  "properties": [{
    "name": "from",
    "default": "",
    "optional": false,
    "control": "text",
    "type": "string",
    "hint": {
      "en_US": "From table name",
      "zh_CN": "来源表的名字"
    },
    "label": {
      "en_US": "From",
      "zh_CN": "来源表"
    }
  },{
    "name": "joins",
    "optional": false,
    "control": "list",
    "type": "list_object",
    "hint": {
      "en_US": "Join conditions",
      "zh_CN": "连接条件"
    },
    "label": {
      "en_US": "Joins",
      "zh_CN": "连接"
    },
    "default": [
      {
        "name": "name",
        "default": "",
        "optional": false,
        "control": "text",
        "type": "string",
        "hint": {
          "en_US": "Join table name",
          "zh_CN": "连接的表名"
        },
        "label": {
          "en_US": "Table Name",
          "zh_CN": "表名"
        }
      },
      {
        "name": "type",
        "default": "",
        "optional": false,
        "control": "text",
        "type": "string",
        "values": [
          "inner",
          "left",
          "right",
          "full",
          "cross"
        ],
        "hint": {
          "en_US": "Join type",
          "zh_CN": "连接类型"
        },
        "label": {
          "en_US": "Type",
          "zh_CN": "类型"
        }
      },
      {
        "name": "on",
        "default": "",
        "optional": false,
        "control": "text",
        "type": "string",
        "hint": {
          "en_US": "join condition expression",
          "zh_CN": "连接条件语句"
        },
        "label": {
          "en_US": "Condition",
          "zh_CN": "条件"
        }
      }
    ]
  }],
  "node": {
    "display": true,
    "category": "operator",
    "input": {
      "type": "collection",
      "rowType": "single",
      "collectionType": "single"
    },
    "output": {
      "type": "collection",
      "strategy": "append"
    },
    "icon": "iconPath",
    "label": {
      "en": "Join",
      "zh": "连接"
    }
  }
}