kmatt

def df_to_sql_fast(df, table_name, numeric_columns, date_columns, append_or_replace, conn):
    """
    Appends or overwrites a SQL Server table 
    using data from a Pandas DataFrame.
    Submits df records at once for faster performance
    compared to df_to_sql.

    Parameters:
        df (DataFrame): df used to create/append table
        table_name (str): Name of existing SQL Server table

kmatt

[cmdletbinding()]
Param(
    [Parameter(Mandatory=$true)]
    [string[]]$servers,
    
    [ValidateScript({
        if(-Not ($_ | Test-Path )) {
            throw "Folder does not exist"
        }
        return $true

kmatt

Here are some helpful commands for managing ZFS and ZPool on Ubuntu

VDEV

Useful for populating /etc/zfs/vdev_id.conf:

printDisks() {
    for i in /dev/sd[b-i]; do
        fdisk -l $i

kmatt

An opinionated list of excellent Clojure learning materials

These resources (articles, books, and videos) are useful when you're starting to learn the language, or when you're learning a specific part of the language. This an opinionated list, no doubt. I've compiled this list from writing and teaching Clojure over the last 10 years.

• 🔴 Mandatory (for both beginners and intermediates)
• 🟩 For beginners
• 🟨 For intermediates

Table of contents

1. Getting into the language

kmatt

# Alternative to_sql() *method* for mssql+pyodbc or mssql+pymssql
#
# adapted from https://pandas.pydata.org/docs/user_guide/io.html#io-sql-method
import json

import pandas as pd
import sqlalchemy as sa


def mssql_insert_json(table, conn, keys, data_iter):

kmatt

# version 1.2 - 2022-11-01
import pandas as pd
import sqlalchemy as sa


def df_upsert(data_frame, table_name, engine, schema=None, match_columns=None):
    """
    Perform an "upsert" on a SQL Server table from a DataFrame.

    Constructs a T-SQL MERGE statement, uploads the DataFrame to a

kmatt

Create a file:
$ vim /Users/Shared/logoutHook.sh

File content:
#!/bin/bash
say 'Hasta la vista baby!'

Set execution permission:
$ sudo chmod +x /Users/Shared/logoutHook.sh

kmatt

# ========= PROMPT =========
# Version control information
autoload -Uz vcs_info
precmd() { vcs_info }
# Format the vcs_info_msg_0_ variable
zstyle ':vcs_info:git:*' formats ' %b '

# Render the prompt
setopt PROMPT_SUBST

kmatt

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project:

kmatt

/*
ClickHouse client version 1.1.53996.
Connecting to localhost:9000.
Connected to ClickHouse server version 1.1.53996.
*/

:) CREATE TABLE IF NOT EXISTS `employee` (
:-]   `empid` Int32,
:-]   `deptid` Int32,
:-]   `salary` Int64