\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{delfinap} \pdfinfo{ /Title (sql-cheatsheet.pdf) /Creator (Cheatography) /Author (delfinap) /Subject (sql cheatsheet 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}{FF4F4F} \definecolor{LightBackground}{HTML}{FFF4F4} \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{sql cheatsheet Cheat Sheet}}}} \\ \normalsize{by \textcolor{DarkBackground}{delfinap} via \textcolor{DarkBackground}{\uline{cheatography.com/195226/cs/40849/}}} \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}delfinap \\ \uline{cheatography.com/delfinap} \\ \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 16th October, 2023.\\ 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}{p{0.4977 cm} p{0.4977 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{SQL}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{Lenguaje declarativo no imperativo basado en conjuntos, es decir relacionalmente completo.​} \tn % Row Count 2 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{data types}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{FLOAT} \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \mymulticolumn{2}{x{5.377cm}}{INTEGRERS} \tn % Row Count 2 (+ 1) % Row 2 \SetRowColor{LightBackground} CHAR(2) & 'abc ' \tn % Row Count 3 (+ 1) % Row 3 \SetRowColor{white} VARCHAR(10) & 'abc' \tn % Row Count 4 (+ 1) % Row 4 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{NULL} \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}{Selct query}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{SELECT col1, col2 AS alias \newline FROM table \newline JOIN table2 ON table1.col = table2.col \newline WHERE condition \newline GROUP BY column\_name \newline HAVING condition \newline ORDER BY col1 ASC|DESC;} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{FROM}}: origenes de los datos \newline {\bf{WHERE}}: limita registros donde es verdadero. \textgreater{}, \textless{}, =, \textless{}\textgreater{}, \textgreater{}=, \textless{}=, \newline LIKE, NOT, IN, BETWEEN etc. \newline {\bf{GROUP BY}}: Especifica el criterio por el cual la tabla va a ser agrupada y calcula los resultados de las funciones estadísticas definidas en la sentencia SELECT.​ \newline El {\bf{HAVING}} filtra los resultados del group by.} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{p{0.74655 cm} x{4.23045 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{basicos}} \tn % Row 0 \SetRowColor{LightBackground} {\bf{DDL}} & leng de definicion de datos \tn % Row Count 2 (+ 2) % Row 1 \SetRowColor{white} \seqsplit{create} & `CREATETABLE t (id INT, constraint pk\_nombre PRIMARY KEY());` \tn % Row Count 4 (+ 2) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{drop} \tn % Row Count 5 (+ 1) % Row 3 \SetRowColor{white} alter & `ALTER TABLE tablename ADD columnname datatype;` \tn % Row Count 7 (+ 2) % Row 4 \SetRowColor{LightBackground} {\bf{DML}} & leng de manipulacion de datos \tn % Row Count 9 (+ 2) % Row 5 \SetRowColor{white} \mymulticolumn{2}{x{5.377cm}}{select} \tn % Row Count 10 (+ 1) % Row 6 \SetRowColor{LightBackground} \seqsplit{insert} & `INSERT INTO tablename (col1)VALUES (val);` \tn % Row Count 12 (+ 2) % Row 7 \SetRowColor{white} \seqsplit{update} & `UPDATE tablename SET col1 = val1 WHERE condition;` \tn % Row Count 14 (+ 2) % Row 8 \SetRowColor{LightBackground} \seqsplit{delete} & `DELETE FROM tablename WHERE condition;` \tn % Row Count 16 (+ 2) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Clave cantidata}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{Sea una relación R. Entonces una clave candidata de R es un subconjunto de atributos de R, denominado K que cumple con:  } \tn % Row Count 3 (+ 3) % Row 1 \SetRowColor{white} {\bf{Unicidad}}: No existen dos tuplas de R con el mismo valor de atributos para K   & {\bf{Minimalidad}}: No existe un subconjunto de atributos de K que cumplan con la propiedad de unicidad \seqsplit{(Irreductibilidad) } \tn % Row Count 10 (+ 7) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{X} \SetRowColor{DarkBackground} \mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{joins}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{SELECT t1.{\emph{, t2.}} \newline FROM t1 \newline join\_type t2 ON t1.col = t2.col;} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{{\bf{ inner join}} valores de ambas tablas \newline {\bf{ left join}} todos los regitros de la izq y los iguales de la derecha \newline {\bf{right join}} todos los registros de la derecha y los iguales de la izq. \newline {\bf{full join}} todos los registros donde en ambas tablas es igual o no lo es} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{1.14471 cm} x{3.83229 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{funciones de agregación}} \tn % Row 0 \SetRowColor{LightBackground} \seqsplit{avg(expr)} & promedio de valores en columna \tn % Row Count 1 (+ 1) % Row 1 \SetRowColor{white} \seqsplit{count(expr)} & contador de valores dentro del grupo \tn % Row Count 3 (+ 2) % Row 2 \SetRowColor{LightBackground} \seqsplit{max(expr)} & maximo valor en registros \tn % Row Count 4 (+ 1) % Row 3 \SetRowColor{white} \seqsplit{min(expr)} & minimo valor en registros \tn % Row Count 5 (+ 1) % Row 4 \SetRowColor{LightBackground} \seqsplit{sum(expr)} & suma valores dento de grupo \tn % Row Count 6 (+ 1) \hhline{>{\arrayrulecolor{DarkBackground}}--} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{p{0.50347 cm} x{2.97505 cm} x{1.09848 cm} } \SetRowColor{DarkBackground} \mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Operadores de comparación}} \tn % Row 0 \SetRowColor{LightBackground} \seqsplit{Between} & Permite comparar contra un rango de valores incluyéndolos.  & \tn % Row Count 3 (+ 3) % Row 1 \SetRowColor{white} Like & Comparación con máscaras (expresiones regulares). Funciona solo con caracteres & "-{}-{}-\%", "\%-{}-{}-", \tn % Row Count 7 (+ 4) % Row 2 \SetRowColor{LightBackground} \seqsplit{Exists} & determina si el resultado de una subconsulta devolvió registros o no.  & \tn % Row Count 10 (+ 3) % Row 3 \SetRowColor{white} In & `SELECT * FROM customers WHERE id IN ( SELECT DISTINCT customer\_id FROM orders );` & \tn % Row Count 14 (+ 4) \hhline{>{\arrayrulecolor{DarkBackground}}---} \end{tabularx} \par\addvspace{1.3em} \begin{tabularx}{5.377cm}{x{2.4885 cm} x{2.4885 cm} } \SetRowColor{DarkBackground} \mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{views}} \tn % Row 0 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{La vista es como una tabla nueva pero que cada vez que la llamas, lo que hace es ejecutar esa sentencia. . } \tn % Row Count 3 (+ 3) % Row 1 \SetRowColor{white} Existe por su definición en base a una sentencia Select.  & No posee datos propios, estos se obtienen en el momento de su invocación por la ejecución de la sentencia Select en la definición.  \tn % Row Count 10 (+ 7) % Row 2 \SetRowColor{LightBackground} \mymulticolumn{2}{x{5.377cm}}{`CREATE VIEW nombre AS SELECT columnas FROM tabla WHERE condicion\textgreater{} date condicion;`} \tn % Row Count 12 (+ 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}{stored procedures}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{-{}- Define a name and parameters \newline CREATE PROCEDURE Northwind.getEmployee \newline @LastName nvarchar(50), \newline @FirstName nvarchar(50) \newline AS \newline -{}- Define the query to be run \newline SELECT FirstName, LastName, Department \newline FROM \seqsplit{Northwind.vEmployeeDepartment} \newline WHERE FirstName = @FirstName AND LastName = @LastName \newline AND EndDate IS NULL; \newline \newline {\bf{Calling the procedure:}} \newline EXECUTE Northwind.getEmployee N'Ackerman', N'Pilar';} \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}{Triggers}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{CREATE TRIGGER BooksDeleteTrigger \newline ON MyBooksDB.Books \newline AFTER DELETE \newline AS \newline INSERT INTO BooksRecycleBin \newline SELECT * \newline FROM deleted; \newline GO} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{Un {\bf{trigger}}, significa que es una acción que voy a definir que se ejecute cuando pase cierta condición. Lo que permite es generar acciones que automaticen procesos.} \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}{transacciones}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{BEGIN TRANSACTION \newline INSERT INTO \seqsplit{DeletedEmployees(EmployeeID}, DateDeleted, User) \newline (SELECT 123, GetDate(), CURRENT\_USER); \newline DELETE FROM Employees WHERE EmployeeID = 123; \newline COMMIT TRANSACTION} \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}{grant and revoke}} \tn \SetRowColor{LightBackground} \mymulticolumn{1}{x{5.377cm}}{GRANT EXECUTE ON privilegio TO usuario WITH GRANT OPTION (condicional); EXCT agregarMiembro} \tn \hhline{>{\arrayrulecolor{DarkBackground}}-} \end{tabularx} \par\addvspace{1.3em} % That's all folks \end{multicols*} \end{document}