server_version(); is unsupported in redshift

redshift migration is not working because of unsupported function `server_version()`.

[ ] Bug report

Current behavior

Since redshift is postgres compliance, i'm using db-migrate-pg in my node.js application for redshift.

When i ran migrate script, i'm getting below error from redshift db. Here is my verbose looks like:

sangeeth@sangeeth-kumar ~/Desktop/analytics-api $ ./node_modules/.bin/db-migrate up --config cfg/database.json --verbose
[INFO] Detected and using the projects local version of db-migrate. '/home/sangeeth/Desktop/analytics-api/node_modules/db-migrate/index.js'
[INFO] Using dev settings: { driver: 'pg',
  database: 'analytics',
  user: 'master',
  password: '******',
  host: '*****',
  port: '****' }
[INFO] require: db-migrate-pg
[INFO] connecting
[INFO] connected
[SQL] show server_version_num
[SQL] show server_version
[ERROR] error: must be superuser to examine "server_version"
    at Connection.parseE (/home/sangeeth/Desktop/analytics-api/node_modules/pg/lib/connection.js:553:11)
    at Connection.parseMessage (/home/sangeeth/Desktop/analytics-api/node_modules/pg/lib/connection.js:378:19)
    at Socket.<anonymous> (/home/sangeeth/Desktop/analytics-api/node_modules/pg/lib/connection.js:119:22)
    at emitOne (events.js:116:13)
    at Socket.emit (events.js:211:7)
    at addChunk (_stream_readable.js:263:12)
    at readableAddChunk (_stream_readable.js:250:11)
    at Socket.Readable.push (_stream_readable.js:208:10)
    at TCP.onread (net.js:607:20)

So we can see the error is thrown from redshift.

I had asked this in SO. Link to stackoverflow question

Got to know that show server_version(); is unsupported postgres function in redshift and they suggested to patch the library to work with select version(); instead.

analytics=# select version();
                                                         version                                                          
--------------------------------------------------------------------------------------------------------------------------
 PostgreSQL 8.0.2 on i686-pc-linux-gnu, compiled by GCC gcc (GCC) 3.4.2 20041017 (Red Hat 3.4.2-6.fc3), Redshift 1.0.2915
(1 row)

Expected behavior

Can you help me out, how to migrate my sql scripts in redshift? Or How to patch server_version to use select version?

Environment


db-migrate version: 0.11.1
db-migrate-pg: 0.4.0
redshift: 1.0.2915
PostgreSQL 8.0.2

Additional information:
- Node version: 8.11.1
- Platform:  Linux



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I'm using db-migrate-redshift - repo link now.

But it is hangs up on select version() as version when i do migrate. Here is my verbose:

$ db-migrate up --config cfg/database.json --verbose
[INFO] Detected and using the projects local version of db-migrate. '/home/sangeeth/Desktop/myGitRepos/analytics-api/node_modules/db-migrate/index.js'
[INFO] Using dev settings: { driver: 'redshift',
  database: '*****',
  user: '*****',
  password: '******',
  host: '******' }
[INFO] require: db-migrate-redshift
[INFO] connecting
[INFO] connected
[SQL] select version() as version
[ERROR] Error: connect ETIMEDOUT 54.161.156.200:5432
    at Object._errnoException (util.js:1022:11)
    at _exceptionWithHostPort (util.js:1044:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1198:14)
error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

@wzrdtales , Could you able to help me out?

db-migrate / node-db-migrate