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/**/
/// /// Convert dataset data to JSON format /// /// Dataset /// JSON string
Public
Static
String
Getjsonbydataset (Dataset DS)
{ If (DS = Null | DS. Tables. Count 0 | DS. Tables [ 0
This article mainly introduces how JavaScript converts XML into JSON. The example analyzes the XML file operation and format conversion techniques in javascript, which has some reference value, for more information about how to convert XML into JSON, see the example in this article. Share it with you for your reference. The specific method is as follows:
1. The
The example in this article describes the method for dynamically creating a complex table table Jquery+json implementation. Share to everyone for your reference, specific as follows:
function setsubtable () {var obj = Jquery.parsejson ($ ("#SubJsonStrValue"). Val ()); Window.
Allparamters = obj;
var row_str = ""; var span_num = 1 for (var i = 0; i
P
|| Betty |+--------+2 rows in set (0.00 sec)mysql> EXPLAIN SELECT c->>"$.name" AS name > FROM jemp WHERE g > 2\G*************************** 1. row *************************** id: 1 select_type: SIMPLE table: jemp partitions: NULL type: rangepossible_keys: i key: i key_len: 5 ref: NULL rows: 2 filtered: 100.00 Extra: Using where1 row in set, 1 warning (0.00 sec)
will retrieve the required demand_praiseid field and convert it to an array. I will save the uid to an array and then save the array in the converted json field.
I don't know if I have made this project too complicated.
First, after understanding your question, you should ask:There is a data table field of the varchar type. after you obtain the value of this
index of subsequent close bracket found in the JSON string@Type NVARCHAR,--Whether it denotes an object or an array@NextCloseDelimiterChar CHAR (1),--either a '} ' or a '] '@Contents NVARCHAR (MAX),--the unparsed Contents of the bracketed expression@Start INT,--index of the Start of the token that is parsing@end INT,--Index of the end of the token that is parsing@param INT,--The parameter at the end of the next Object/array token@EndOfName INT,--The
Tags: auto address Modify select span key values CTE BeijingRequirements Description :Today I look at the problem of storing JSON data types in MySQL, and for modifying the JSON data,Under this record.Operation Process :1. Create a table with JSON data types, insert the unde
effect was poor. Later, I used the json_encode () function in PHP to query the information,
$ Str is the data to be processed. You can use the following statement to output data in json format,
Here, JSON_NESCAPED_UNICODE refers to the encoding in UNICODE format,
The manual says that "this function can only accept UTF-8-encoded data" in many formats
echo json_encode($row,JSON_UNESCAPED_UNICODE);
The front-end page initiates an ajax request. The core
This article describes how to convert HTML table data to Json format. The following is a good example.
ScriptVar keysArr = new Array ("key0", "key1", "key2 ");Function TableToJson (tableid) {// tableid is the name of the table you want to convert. It is a string, such a
make this project too complicated.
First of all, to understand your problem, you should ask:The field of a data table is a varchar type, after you get the value of this field in PHP, how do you convert the value of this field to an array?Second: If you want to convert the contents of Demand_praiseid to an array, this is going to be based on the structure of yo
),--the value as a string @SequenceNo int,--The sequence number W Ithin a list @name NVARCHAR,--the name as a string @parent_ID INT,--the next parent ID to allocate @lenJSON INT,--the current lengtH of the JSON String @characters NCHAR,--used to convert hex to decimal @result BIGINT,--The value of the hex sy Mbol being parsed @index SMALLINT,--used for parsing the hex value @Escape INT--the index of the ne
symbol being parsed @index SMALLINT,--used for parsing the hex value @Escape INT--the index Of the next escape character DECLARE @Strings table/* In this temporary table we keep all Strings, even the names of The elements, since they is ' escaped ' in a different, and may contain, unescaped, brackets denoting objects or lists . These is replaced in the JSON str
0. DescriptionBecause of the need for personal projects, the data obtained are JSON type and are stored in the MySQL database, because JSON type data is not like normal text data, so there are a lot of issues to be aware of when storing MySQL.On the internet to find a lot of methods, collated a bit more practical and reliable, summed up is the following process:
the root password. wait a few minutes, and zxs. SQL will be imported successfully. this is not enough, because the latin1 encoding is converted to utf8.Finally, stop mysql and overwrite all the files in the test2 directory to the test1 directory we just backed up. in this way, the test1 directory is the converted UTF8 database.Of course, the method is very simple, that is, to separate the latin1 encoded table
avoid syntax errors:
The ajax Request Code is as follows:
var xmlHttp=nullfunction get_pic(str){ /*search the file in mysql table pydot and pydot_g,then give the result to front page.start ajax request*/xmlHttp=GetXmlHttpObject()if (xmlHttp==null) { alert ("Browser does not support HTTP Request") return }var url="Public/Js/json.php";url=url+"?q="+str.innerHTMLurl=url+"sid="+Math.random()//alert(url)xmlHtt
functions to convert IP addresses and numbers
Using two built-in functions
Inet_aton: converts an IP address to a number.
Inet_ntoa: convert a numeric type to an IP address
Make full use of the mysql built-in format Function
Especially when processing character formats, for example, to convert 12345 to 12,345, you onl
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