8000 Multi line prepared statement · Issue #1 · danneu/pg-extra · GitHub
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mikef-traction opened this issue Mar 29, 2017 · 3 comments
Closed

Multi line prepared statement #1

mikef-traction opened this issue Mar 29, 2017 · 3 comments

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@mikef-traction
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mikef-traction commented Mar 29, 2017 •
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Appreciate your work on this repo.
Working on my first koa/vuejs/node/postgres project so apologies if this is a silly question. I have large bulk inserts to perform. ie:
INSERT INTO
foo (col1,col2,col3)
VALUES
(1,2,3),
(4,5,6),
(7,8,9),
......
I'm not sure how to build out very long sql statements. I've attempted something like brianc/node-postgres#530 (comment) but I get an error that client.query expects either sql or __raw within client.query.

Could you suggest a way to build out the query? Could be many many lines long. Cheers.
@mikef-traction mikef-traction changed the title Multi line prepared statment Multi line prepared statement Mar 29, 2017
@danneu
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danneu commented Mar 30, 2017 •
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I personally use a query builder like knex for more dynamic queries, like an INSERT with an arbitrary amount of VALUES or a /search endpoint that may have any number of filters.

const knex = require('knex')

exports.insertUsers = function (users) {
    const sqlString = knex('users')
        .insert(users.map((u) => ({ uname: u.uname })))
        .toString()
    return client._query(sqlString)
}

I should update the README to provide examples like this.

Notice that, in pg-extra, client._query() bypasses the sql/_unsafe requirement.

@mikef-traction
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That is awesome. Thanks!

@danneu
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danneu commented Apr 25, 2017

Updated the readme with this example.

This is the same thing you'd do whether you use pg-extra or the underlying pg module directly since you can't create a dynamic query with INSERT INTO ... VALUES ($1, $2), ($3, $4), ... syntax.

@danneu danneu closed this as completed Apr 25, 2017
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