kerumen / knex-db2 Goto Github PK

Disclaimer: this library is under active development. Use at your own risk.

Limitations

Currently this dialect has limited functionality compared to the Knex built-in dialects. Below are some of the limitations:

• No transaction support
• No streaming support
• Possibly other missing functionality

Supported functionality

• Query building
• Query execution (see Limitations)

Installing

npm install knex-db2

Dependencies

npm install odbc see ODBC dependencies if you run into any issues

npm install knex

Usage

const Knex = require('knex')
const Db2Dialect = require('knex-db2')

const knex = Knex({
	client: Db2Dialect,
	connection: {
		host: 'localhost',
		database: 'knextest',
		port: 50000,
		user: 'db2inst1',
		password: 'db2inst1-pwd',
		driver: '{IBM Cli Driver}',
		connectionStringParams: {
			ALLOWPROCCALLS: 1,
			CMT: 0
		}
	},
	pool: {
		min: 2,
		max: 10
	}
})

const query = knex
	.select('*')
	.from('table1')
	.where('x', 'y')


query
	.then(result => console.log(result))
	.catch(err => console.error(err))
	.finally(() => process.exit())

ODBC dependencies

• make: sudo apt install make
• g++: sudo apt install g++
• unix odbc: sudo apt-get install unixodbc unixodbc-dev

Configuring your driver

If you don't know the name of your installed driver, then look in look in odbcinst.ini. You can find the full path of the file by running odbcinst -j. There you should see an entry like the one below:

[IBM i Access ODBC Driver 64-bit]       <= driver name enclosed in square brackets
Description=IBM i Access for Linux 64-bit ODBC Driver
Driver=/opt/ibm/iaccess/lib64/libcwbodbc.so
Setup=/opt/ibm/iaccess/lib64/libcwbodbcs.so
Threading=0
DontDLClose=1
UsageCount=1

If that still doesn't work, then unixodbc is probably looking for the config files in the wrong directory. A common case is that the configs are in /etc but your system expects them to be somewhere else. In such case, override the path unixodbc looks in via the ODBCSYSINI and ODBCINI environment variables. E.g., ODBCINI=/etc ODBCSYSINI=/etc.

Installing default driver

Download driver

https://github.com/ibmdb/node-ibm_db#systemDetails

Install driver

• Extract downloaded file. This will create a clidriver folder with the driver contents
• Copy this folder to wherever your system keeps drivers. If you're not sure where to put it, just copy it to /opt/ibm.
• Add the configuration your /etc/odbcinst.ini file. Below is what the contents of the file should look like if your odbc path is /opt

[IBM Cli Driver]
Description=IBM CLI Driver for Linux 64-bit
Driver=/opt/ibm/clidriver/lib/libdb2.soSetup=libdb2.so.1
hreading=0
DontDLClose=1
UsageCount=1