\documentclass[10pt,a4paper]{article}

% Packages
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\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
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\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{mckoy}
\pdfinfo{
  /Title (postgres-ei20.pdf)
  /Creator (Cheatography)
  /Author (mckoy)
  /Subject (Postgres (EI20) Cheat Sheet)
}

% Lengths and widths
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% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
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\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
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\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
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\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Postgres (EI20) Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{mckoy} via \textcolor{DarkBackground}{\uline{cheatography.com/59730/cs/15641/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}mckoy \\
  \uline{cheatography.com/mckoy} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 30th April, 2018.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
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  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.


\begin{tabularx}{17.67cm}{x{5.6991 cm} x{11.5709 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{GETTING STARTED WITH POSTGRES FROM CLI}}  \tn
% Row 0
\SetRowColor{LightBackground}
START SERVER & `pg\_ctl start -l "\$PGDATA/server.log"` \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
CREATE DATABASE & `createdb -U dev \textless{}DATABASE\textgreater{}` \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
IMPORT & `psql \textless{}DATABASE\textgreater{} \textless{} \textless{}PATH-TO-FILENAME\textgreater{}` \tn 
% Row Count 6 (+ 2)
% Row 3
\SetRowColor{white}
IMPORT \seqsplit{(alternative)} & `psql -U dev -d \textless{}DATABASE\textgreater{} -f \textless{}PATH-TO-FILENAME\textgreater{}` \tn 
% Row Count 8 (+ 2)
% Row 4
\SetRowColor{LightBackground}
SERVER STATUS & `pg\_ctl status` \tn 
% Row Count 9 (+ 1)
% Row 5
\SetRowColor{white}
DROP DATABASE & `dropdb \textless{}DATABASE\textgreater{}` \tn 
% Row Count 10 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{p{1.8997 cm} x{15.3703 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{17.67cm}}{\bf\textcolor{white}{PSQL SHELL LOGIN}}  \tn
% Row 0
\SetRowColor{LightBackground}
Login & `psql -h \textless{}HOSTNAME\textgreater{} -U \textless{}USERNAME\textgreater{} \textless{}DATABASE\textgreater{}` \tn 
% Row Count 2 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{17.67cm}{x{6.7527 cm} x{1.647 cm} x{4.7763 cm} x{3.294 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{4}{x{17.67cm}}{\bf\textcolor{white}{PSQL SHELL META-COMMANDS}}  \tn
% Row 0
\SetRowColor{LightBackground}
List Databases & `: \textbackslash{}l` & this prompt `\textless{}DATABASE\textgreater{}=\#` & means \seqsplit{super-user} \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
Tables in Databases & `: \textbackslash{}d` & this prompt `\textless{}DATABASE\textgreater{}=\textgreater{}` & means normal user \tn 
% Row Count 6 (+ 3)
% Row 2
\SetRowColor{LightBackground}
Public Tables & `: \textbackslash{}dt` & this prompt `\textless{}DATABASE\textgreater{}-\#` & means \seqsplit{continuation} \tn 
% Row Count 9 (+ 3)
% Row 3
\SetRowColor{white}
Public Tables with Size and Description & `: \textbackslash{}dt+` &  &  \tn 
% Row Count 12 (+ 3)
% Row 4
\SetRowColor{LightBackground}
To Exit/Quit & `: \textbackslash{}q` &  &  \tn 
% Row Count 14 (+ 2)
% Row 5
\SetRowColor{white}
Connect to Other & `: \textbackslash{}c` &  &  \tn 
% Row Count 16 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}----}
\end{tabularx}
\par\addvspace{1.3em}



\end{document}