\documentclass[10pt,a4paper]{article} % Packages \usepackage{fancyhdr} % For header and footer \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 %\usepackage[utf8x]{inputenc} % For unicode character support \usepackage[T1]{fontenc} % Without this we get weird character replacements \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{jasperdelaat} \pdfinfo{ /Title (db-rules.pdf) /Creator (Cheatography) /Author (jasperdelaat) /Subject (DB rules Cheat Sheet) } % Lengths and widths \addtolength{\textwidth}{6cm} \addtolength{\textheight}{-1cm} \addtolength{\hoffset}{-3cm} \addtolength{\voffset}{-2cm} \setlength{\tabcolsep}{0.2cm} % Space between columns \setlength{\headsep}{-12pt} % Reduce space between header and content \setlength{\headheight}{85pt} % If less, LaTeX automatically increases it \renewcommand{\footrulewidth}{0pt} % Remove footer line \renewcommand{\headrulewidth}{0pt} % Remove header line \renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit % 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 \newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns \newcommand{\tn}{\tabularnewline} % Required as custom column type in use % Font and Colours \definecolor{HeadBackground}{HTML}{333333} \definecolor{FootBackground}{HTML}{666666} \definecolor{TextColor}{HTML}{333333} \definecolor{DarkBackground}{HTML}{487BA3} \definecolor{LightBackground}{HTML}{F3F6F9} \renewcommand{\familydefault}{\sfdefault} \color{TextColor} % Header and Footer \pagestyle{fancy} \fancyhead{} % Set header to blank \fancyfoot{} % Set footer to blank \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}} } \end{tabulary} \columnbreak \begin{tabulary}{11cm}{L} \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{DB rules Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{jasperdelaat} via \textcolor{DarkBackground}{\uline{cheatography.com/121163/cs/22086/}}} \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}jasperdelaat \\ \uline{cheatography.com/jasperdelaat} \\ \end{tabulary} \vfill \columnbreak \begin{tabulary}{5.8cm}{L} \SetRowColor{FootBackground} \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}} \\ \vspace{-2pt}Published 18th March, 2020.\\ Updated 19th March, 2020.\\ Page {\thepage} of \pageref{LastPage}. \end{tabulary} \vfill \columnbreak \begin{tabulary}{5.8cm}{L} \SetRowColor{FootBackground} \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}} \\ \SetRowColor{white} \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{multicols*}{3} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{General rules}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Engels} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Unieke naam zonder gereserveerde MSSQL keywords} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Namen maximaal 30 karakters lang} \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{snake\_casing} \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{SQL keywoorden altijd met hoofdletters (SELECT, WHERE)} \tn % Row Count 6 (+ 2) % Row 5 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Altijd AS gebruiken bij aliassen} \tn % Row Count 7 (+ 1) % Row 6 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Aliassen volledig uitschrijven, niet één letter} \tn % Row Count 8 (+ 1) % Row 7 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Joins altijd specificeren welke join het is} \tn % Row Count 9 (+ 1) % Row 8 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Joins sorteren op volgorde: LEFT, RIGHT, INNER} \tn % Row Count 10 (+ 1) % Row 9 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Where clause altijd op een nieuwe regel} \tn % Row Count 11 (+ 1) % Row 10 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{FROM altijd maar op één tabel} \tn % Row Count 12 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Select}} \tn \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{GOOD:}} \newline % Row Count 1 (+ 1) SELECT \newline % Row Count 2 (+ 1) projects.name AS project\_name, \newline % Row Count 3 (+ 1) COUNT(backings.id) AS backings\_count \newline % Row Count 4 (+ 1) ... \newline % Row Count 5 (+ 1) {\bf{BAD:}} \newline % Row Count 6 (+ 1) SELECT \newline % Row Count 7 (+ 1) projects.name project\_name, \newline % Row Count 8 (+ 1) COUNT(backings.id) backings\_count \newline % Row Count 9 (+ 1) ...% Row Count 10 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Where}} \tn \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{GOOD:}} \newline % Row Count 1 (+ 1) SELECT \newline % Row Count 2 (+ 1) name, \newline % Row Count 3 (+ 1) goal \newline % Row Count 4 (+ 1) FROM projects AS projects \newline % Row Count 5 (+ 1) WHERE \newline % Row Count 6 (+ 1) country = 'US' \newline % Row Count 7 (+ 1) AND deadline \textgreater{}= '2015-01-01' \newline % Row Count 8 (+ 1) ... \newline % Row Count 9 (+ 1) {\bf{BAD:}} \newline % Row Count 10 (+ 1) SELECT \newline % Row Count 11 (+ 1) name, \newline % Row Count 12 (+ 1) goal \newline % Row Count 13 (+ 1) FROM projects AS projects \newline % Row Count 14 (+ 1) WHERE country = 'US' AND deadline \textgreater{}= '2015-01-01' \newline % Row Count 16 (+ 2) ...% Row Count 17 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Tables}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Namen in meervoud} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Geen prefix} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Koppeltabel niet table1\_table2, correcte naam geven} \tn % Row Count 4 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{0.94563 cm} x{4.03137 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Achtervoegsels}} \tn % Row 0 \SetRowColor{LightBackground} \_id & unieke identifier \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \_total & totaal of som van andere veden \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \seqsplit{\_number} & voor numerieke velden \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} \_name & voor naamvelden \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} \_date & datumvelden \tn % Row Count 5 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Join Sorting}} \tn \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{GOOD:}} \newline % Row Count 1 (+ 1) INNER JOIN backings AS backings ON ... \newline % Row Count 2 (+ 1) INNER JOIN users AS users ON ... \newline % Row Count 3 (+ 1) INNER JOIN locations AS locations ON ... \newline % Row Count 4 (+ 1) LEFT JOIN backer\_rewards AS backer\_rewards ON ... \newline % Row Count 5 (+ 1) LEFT JOIN ... \newline % Row Count 6 (+ 1) {\bf{BAD:}} \newline % Row Count 7 (+ 1) LEFT JOIN backer\_rewards AS backer\_rewards ON backings \newline % Row Count 9 (+ 2) INNER JOIN users AS users ON ... \newline % Row Count 10 (+ 1) LEFT JOIN ... \newline % Row Count 11 (+ 1) INNER JOIN locations AS locations ON ...% Row Count 12 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{From}} \tn \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{GOOD:}} \newline % Row Count 1 (+ 1) SELECT \newline % Row Count 2 (+ 1) projects.name AS project\_name, \newline % Row Count 3 (+ 1) COUNT(backings.id) AS backings\_count \newline % Row Count 4 (+ 1) FROM projects AS projects \newline % Row Count 5 (+ 1) INNER JOIN backings AS backings ON backings.project\_id = projects.id \newline % Row Count 7 (+ 2) ... \newline % Row Count 8 (+ 1) {\bf{BAD:}} \newline % Row Count 9 (+ 1) SELECT \newline % Row Count 10 (+ 1) projects.name AS project\_name, \newline % Row Count 11 (+ 1) COUNT(backings.id) AS backings\_count \newline % Row Count 12 (+ 1) FROM projects AS projects, backings AS backings \newline % Row Count 13 (+ 1) WHERE \newline % Row Count 14 (+ 1) backings.project\_id = projects.id \newline % Row Count 15 (+ 1) ...% Row Count 16 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Columns}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Enkelvoudige naam} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Id velden: tabelnaam\_id} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Geen column met de naam van de tabel} \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Foreign key velden: tabelnaam\_veldnaam} \tn % Row Count 4 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Stored procedures}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Prefix sp\_} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{Naam moet een werkwoord/handeling bevatten} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Comments alleen indien echt nodig, deze dan boven de select zetten} \tn % Row Count 4 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Join Specificeren}} \tn \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{GOOD:}} \newline % Row Count 1 (+ 1) SELECT \newline % Row Count 2 (+ 1) projects.name AS project\_name, \newline % Row Count 3 (+ 1) COUNT(backings.id) AS backings\_count \newline % Row Count 4 (+ 1) FROM projects AS projects \newline % Row Count 5 (+ 1) INNER JOIN backings AS backings ON ... \newline % Row Count 6 (+ 1) INNER JOIN ... \newline % Row Count 7 (+ 1) LEFT JOIN backer\_rewards AS backer\_rewards ON ... \newline % Row Count 8 (+ 1) LEFT JOIN ... \newline % Row Count 9 (+ 1) {\bf{BAD:}} \newline % Row Count 10 (+ 1) SELECT \newline % Row Count 11 (+ 1) projects.name AS project\_name, \newline % Row Count 12 (+ 1) COUNT(backings.id) AS backings\_count \newline % Row Count 13 (+ 1) FROM projects AS projects \newline % Row Count 14 (+ 1) JOIN backings AS backings ON ... \newline % Row Count 15 (+ 1) LEFT JOIN backer\_rewards AS backer\_rewards ON ... \newline % Row Count 16 (+ 1) LEFT JOIN ...% Row Count 17 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Case}} \tn \SetRowColor{white} \mymulticolumn{1}{x{5.377cm}}{{\bf{GOOD:}} \newline % Row Count 1 (+ 1) CASE WHEN category = 'Art' \newline % Row Count 2 (+ 1) THEN backer\_id \newline % Row Count 3 (+ 1) ELSE NULL \newline % Row Count 4 (+ 1) END \newline % Row Count 5 (+ 1) {\bf{BAD:}} \newline % Row Count 6 (+ 1) CASE \newline % Row Count 7 (+ 1) WHEN category = 'Art' \newline % Row Count 8 (+ 1) THEN backer\_id \newline % Row Count 9 (+ 1) ELSE NULL \newline % Row Count 10 (+ 1) END% Row Count 11 (+ 1) } \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}