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Changes for page 01 Lua Functions

Last modified by Theodore Xu on 2023/10/26 10:51
From version 10.1
edited by Hunter
on 2023/01/15 16:45
Change comment: There is no comment for this version
To version 17.1
edited by Theodore Xu
on 2023/08/24 16:45
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Hunter
1 +XWiki.AiXia
Content
... ... @@ -1508,9 +1508,12 @@
1508 1508  * Obtaining ICCID (read only)
1509 1509  ** addr_getstring("@W_HSW225",15)
1510 1510  * (((
1511 -TSAP settings of Siemens LOGO PLC* (((
1511 +TSAP settings of Siemens LOGO PLC*
1512 +
1513 +(((
1512 1512  addr_setword("@W_0#HSW1200",8192) means set the Local TSAP as 20.00
1513 1513  )))
1516 +
1514 1514  * (((
1515 1515  addr_setword("@W_0#HSW1201",4096) means set the Remote TSAP as 10.00
1516 1516  )))
... ... @@ -1926,125 +1926,69 @@
1926 1926  **For example:**
1927 1927  
1928 1928  {{code language="LUA"}}
1929 -mysql = require"mysqlclient"
1932 +-- Assuming the "mysqlclient" library is properly installed and available
1933 +mysql = require("mysqlclient")
1930 1930  
1931 1931  function DataInitRight()
1932 -
1933 -local dbName = "db_lua1"
1934 -
1935 -local user = "root"
1936 -
1937 -local pwd = "123456"
1938 -
1939 -local host = "192.168.56.186"
1940 -
1941 -local port = 3306
1942 -local character = "UTF8"
1943 -
1944 -mysql.init(dbName, user, pwd, host, port, character)
1945 -
1936 + local dbName = "excel"
1937 + local user = "root"
1938 + local pwd = "XXXXX"
1939 + local host = "192.168.39.146"
1940 + local port = 3306
1941 + local character = "utf8mb3"
1942 +
1943 + mysql.init(dbName, user, pwd, host, port, character)
1946 1946  end
1947 1947  
1948 1948  function ExecFunc()
1949 -
1950 -status, errorString = mysql.exec("delete from tb_lua1 where mykey =
1951 -
1952 -10;")
1953 -
1954 -if nil == status then
1955 -
1956 -print("ExecFunc() error:", errorString)
1957 -
1958 -return -1
1959 -
1960 -else
1961 -
1962 -print("the number of rows affected by the command:", status)
1963 -
1947 + status, errorString = mysql.exec("delete from student where Name = 'XXX';") --Delete statement, column name = table element
1948 + if nil == status then
1949 + print("ExecFunc() error:", errorString)
1950 + return -1
1951 + else
1952 + print("the number of rows affected by the command:", status)
1953 + end
1954 + return 0
1964 1964  end
1965 1965  
1966 -return 0
1967 1967  
1968 -end
1969 -
1970 1970  function ExecWithResultFunc()
1971 -
1972 -status, errorString = mysql.execWithResult("select * from tb_lua1;")
1973 -
1974 -if nil == status then
1975 -
1976 -print("ExecWithResultFunc() error:", errorString)
1977 -
1978 -return -1
1979 -
1980 -else
1981 -
1982 -print("ExecWithResultFunc()
1983 -
1984 -success
1985 -
1986 -: status
1987 -
1988 -type
1989 -
1990 -=
1991 -
1992 -",
1993 -
1994 -type(status))
1995 -
1996 -print("ExecWithResultFunc() success : status len = ", #status)
1997 -
1998 -local num = #status
1999 -
2000 -local i = 1
2001 -
2002 -if num > 0 then
2003 -
2004 -for i = 1, num, 1 do
2005 -
2006 -local var = string.format("select result[%d] :mykey = %d,
2007 -
2008 -value = %s", i, status[i].mykey, status[i].value)
2009 -
2010 -print(var)
2011 -
1959 + status, errorString = mysql.execWithResult("select * from student;")
1960 + if nil == status then
1961 + print("ExecWithResultFunc() error:", errorString)
1962 + return -1
1963 + else
1964 + print("ExecWithResultFunc() success : status type = ", type(status))
1965 + print("ExecWithResultFunc() success : status len = ", #status)
1966 + local num = #status
1967 + local i = 1
1968 + if num > 0 then
1969 + for i = 1, num, 1 do
1970 + local var = string.format("select result[%d] :Num = %d，Name = %s，Age = %d", i, status[i].Num, status[i].Name,status[i].Age) --Iterate through the data in the table, noting whether the elements are strings or numbers
1971 + print(var)
1972 + end
1973 + end
1974 + print("---------------")
1975 + end
1976 + return 0
2012 2012  end
2013 2013  
2014 -end
1979 +function MySQL.main()
1980 + print("script running ...")
1981 + DataInitRight()
2015 2015  
2016 -print("---------------")
1983 + -- use exec demo
1984 + if ExecFunc() < 0 then
1985 + return
1986 + end
2017 2017  
2018 -end
1988 + -- use execWithResult demo
1989 + if ExecWithResultFunc() < 0 then
1990 + return
1991 + end
2019 2019  
2020 -return 0
1993 + print("script running success")
2021 2021  end
2022 -
2023 -function luaMysql_apiTest.main()
2024 -
2025 -print("script running ...")
2026 -
2027 -DataInitRight()
2028 -
2029 ---use exec demo
2030 -
2031 -if ExecFunc() < 0 then
2032 -
2033 -return
2034 -
2035 -end
2036 -
2037 ---use execWithResult demo
2038 -
2039 -if ExecWithResultFunc() < 0 then
2040 -
2041 -return
2042 -
2043 -end
2044 -
2045 -print("script running success")
2046 -
2047 -end
2048 2048  {{/code}}
2049 2049  
2050 2050  = **12 Message summary algorithm** =