如何从SQL查询（JOOQ）获取列参数

Question

I have a question if it is possible to get parameters from SQL query in JOOQ -java.

I am using something like this:

for (Query query: sqlQueries){
    for (Param param: query.getParams().values()) {
         System.out.println("P: "+ param.getName());
    }
}

SQL query:

...
insert into `filetest` (`Priezvisko`, `Meno`, `Vek`) values ('Kotov', 'Peter', '22');
insert into `filetest` (`Priezvisko`, `Meno`, `Vek`) values ('Alhambra', 'Seat', '33');
insert into `filetest` (`Priezvisko`, `Meno`, `Vek`) values ('F50', 'Ferrari', '100');

Will process like that (output):

P: Kotov
P: Peter
P: 22
P: Alhambra
P: Seat
P: 33
P: F50
P: Ferrari
P: 100

What I also need is to get output with column names like this:

P: Priezvisko
P: Meno
P: Vek
P: Kotov
P: Peter
P: 22
... rest

Is it possible because I could not figure it out how? If I can ask is it even possible to get tableName from query ? ('filetest' in our example)

Why I need this is to get those paramaters to create CSV file (SQL -> CSV) From mentioned SQL create CSV:

Meno,Priezvisko,Vek
"Peter","Kotov","22"
"Seat","Alhambra","33"
"Ferrari","F50","100"

Answer 1

The fact that a specific parameter happens to be "linked" to a column in your SQL statement is a rather arbitrary assumption of yours. A simple example that would break your assumption is this statement:

insert into `filetest` (`Priezvisko`, `Meno`, `Vek`) 
values ((select 'Kotov' from dual where 1 = 0), 'Peter', '22');

This statement would now contain 5 parameters:

P: Kotov -- Relevant
P: 1     -- Irrelevant
P: 0     -- Irrelevant
P: Peter -- Relevant
P: 22    -- Relevant

You probably want to work with the generated FiletestRecord , which is essentially a Map<Field<?>, ?> that can be translated to INSERT or UPDATE statements by calling record.insert() or record.update() or

ctx.insertInto(FILETEST).set(filetestRecord).execute();