toJson

swordfish.function.toJson()

Convert a DolphinDB object to JSON format. The result includes 5 key-value pairs: name, form, type, size and value.

For different data forms, the maximum length of the data to be converted differs:

Data Forms	Max Length
matrix	300000
set	300000
vector	300000
dict	300000
table	100000

Parameters:

obj (Constant) – Can be any data type.