1. 新建用户自定义变量database

2. 新建关键字sql

3. 用例中调用关键字

附上代码
自定义变量

*** Variables ***
${database}       host='192.168.0.124',port=3306,user='root',password='Pass1234',database='ziyun-iot' \ \ \

自定义关键字

*** Settings ***
Resource          ../sys_Keyword.txt

*** Variables ***
${sheet_name}     PBOX升级计划

*** Keywords ***
sql
    Connect To Database Using Custom Params    pymysql    ${database}
    ${result}    query    SELECT id,collection_id FROM `t_collector_version` ORDER BY id    desc LIMIT    1;
    log many    ${result}
    ${cvid}    Set variable    ${result[0][0]}
    ${cpid}    Set variable    ${result[0][1]}
    Disconnect From Database
    [Return]    ${cvid}    ${cpid}

测试用例调用

*** Settings ***
Resource          ../sys_Keyword.txt
Resource          ./Keyword.txt

*** Variables ***

*** Test Cases ***
Class_01
    sql
    log    sql[0]