json()
Description:
Parse a string, a record, a sequence or a table sequence of JSON format.
Syntax:
json(x)
Note:
If parameter x is a JSON string, the function parses it into a table sequence to return; if parameter x is a record, a sequence or a table sequence, the function parses it into a JSON string to return.
The format of JSON string is [{F:v,…},…], where v is the value of F and a string constant should be quoted.
Parameter:
|
x |
A JSON string/record/sequence |
Option:
|
@v |
Treat parameter x as an expression and calculate its result |
|
@t |
Arrange the returned result set as a same-structure table sequence |
Return value:
Record/Sequence/Table sequence/JSON string
Example:
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|
A |
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1 |
="{name:'China',province:[{name:'Heilongjiang',cities: {city:['Harbin','Daqing']}},{name:'Guangdong', cities:{city:['Guangzhou','Shenzhen','Zhuhai']}},{name:'Taiwan',cities: {city:['Taipei','Kaohsiung']}},{name:'Xinjiang',cities:{city:['Urumqi']}}]} " |
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2 |
=json(A1) |
A1 is a JSON string, which is parsed into a table sequence and return the result:
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3 |
=demo.query("select EID,NAME,SURNAME from EMPLOYEE") |
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4 |
=json(A3) |
A3 is a table sequence, which is parsed into a JSON string and return the result:
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5 |
="{ number:rand(10)}" |
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6 |
=json(A5) |
Result:
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7 |
=json@v(A5) |
The @v option treats rand(10) as an expression and calculates it, and the function returns random numbers within 10. |
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8 |
="[{ID:1,NAME:aa,GENDER:F},{GENDER:M,NAME:bb,ID:2}]" |
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9 |
=json@t(A8) |
@t option enables arranging the result set as a same-structure table sequence.
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