Let's say I have a table like
db.define_table("mytable", Field("j", "json"))
with some data like db.mytable.insert(j={"x":1})

Now I want to find all records with x==1.
Of course
db(db.mytable.j["x"]==1)
does not work (but it would be fine).

I have tried some queries like
db.mytable.j.like("%1%")
db('(j-->x)=1')

but nothing did work. web2py creates always a sql-statement with
.... WHERE <Set(j-->X)=1>...

Postgresql does not understand <set - there is an error message
syntax error at or near "<" Where does this "<set..>" come from?
Any ideas?

Regards, Martin

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