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% Packages
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%\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
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% Document Info
\author{lolitskevin}
\pdfinfo{
  /Title (122a-midterm2.pdf)
  /Creator (Cheatography)
  /Author (lolitskevin)
  /Subject (122a-midterm2 Cheat Sheet)
}

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% Commands
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% Header and Footer
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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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\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{122a-midterm2 Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{lolitskevin} via \textcolor{DarkBackground}{\uline{cheatography.com/61137/cs/15834/}}}
\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}lolitskevin \\
  \uline{cheatography.com/lolitskevin} \\
  \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 18th May, 2018.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
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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{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{selecting without having}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{SELECT d.did, d.budget, avg(e.salary) FROM Emp e, Dept d, Works w WHERE e.eid=w.did and w.did=d.did and w.pcttime\textgreater{}=40 GROUP BY d.did,d.budget;} \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}{selecting with joins}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{SELECT u.user\_id, u.first\_name, u.last\_name \newline FROM user u natural join class c natural join takes t natural join student s \newline WHERE c.dept = 'CS' and s.major = 'ART' \newline GROUP BY u.user\_id \newline HAVING COUNT(u.user\_id) \textgreater{}= 4;} \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}{selecting with fancy joins}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{SELECT u.user\_id, u.email, s.user\_id as sid \newline FROM user u left join student s on u.user\_id = s.user\_id WHERE s.user\_id is null;} \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}{union}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{SELECT first\_name, last\_name \newline FROM customer \newline UNION \newline SELECT first\_name, last\_name \newline FROM staff \newline ORDER BY 1, 2;} \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}{create/drop view}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{DROP VIEW CSStudentView; \newline  \newline CREATE VIEW CSStudentView(user\_id, first\_name, last\_name, class\_no, dept, cno, grade, title, level) \newline AS \newline SELECT s.user\_id, u.first\_name, u.last\_name, c.class\_no, c.dept, c.cno, t.grade, co.title, co.level \newline FROM student s natural join user u natural join class c natural join takes t natural join course co \newline WHERE s.user\_id = u.user\_id \newline GROUP BY user\_id;} \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}{create/drop trigger}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{DROP TRIGGER update\_popularity; \newline  \newline DELIMITER // \newline CREATE TRIGGER update\_popularity AFTER INSERT ON Likes FOR EACH ROW \newline BEGIN \newline     UPDATE Post \newline 		SET popularity = popularity + 1 \newline 		WHERE Post.post\_id = NEW.post\_id; \newline END; // \newline  \newline DELIMITER ;} \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}{trigger with if}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{delimiter //  \newline CREATE TRIGGER NoLowerAge BEFORE UPDATE ON Emp FOR EACH ROW  \newline BEGIN  \newline IF NEW.age \textless{} OLD.age  \newline THEN SET NEW.age = OLD.age;  \newline END IF;  \newline END;//  \newline delimiter ;} \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}{relational algebra}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{π bid ((σ age ​=​ 35 ​∧​ rating \textgreater{}= 5 (Sailor)) ​⨝​ Reserves) ∩ π bid ((σ rating \textless{} 5 (Sailor)) ​⨝ Reserves))% Row Count 3 (+ 3)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{insert / delete}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{INSERT INTO products (productCode, name, quantity, price) VALUES ('PEC', 'Pencil 2B', 10000, 0.48), ('PEC', 'Pencil 2H', 8000, 0.49); \newline  \newline DELETE FROM products WHERE price \textgreater{} 0.4;} \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}{available operators}}  \tn
\SetRowColor{white}
\mymulticolumn{1}{x{5.377cm}}{AND, OR, NOT, XOR, IN, NOT IN, BETWEEN, NOT BETWEEN, IS NULL, IS NOT NULL, AS (ALIAS), ORDER BY .. ASC DESC, LIMIT  \newline % Row Count 3 (+ 3)
aggregate functions: COUNT, MAX, MIN, AVG, SUM, STD, GROUP\_CONCAT% Row Count 5 (+ 2)
} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}