SQL - script - temas sueltos

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	IN conjunto finito / NOT IN conjunto finito		IN conjunto finito / NOT IN conjunto finito
		+	LIMIT (desde,)cuantos
		+
		+	IFNULL
	== Cositas no tan chiquitas ==		== Cositas no tan chiquitas ==
Line 11:		Line 14:
	from formaParte		from formaParte
	group by month(diaFn), year(diaFn);		group by month(diaFn), year(diaFn);
-
-	ROWNUM para MySQL
-	select @rownum:=@rownum+1 rownum, ...
-	from (select @rownum=0), ...
	== Stored procedures ==		== Stored procedures ==
		+
		+
		+	== Vistas ==
		+
	== ¿Más elaborados? ==		== ¿Más elaborados? ==
		+	ROWNUM para MySQL
		+	select @rownum:=@rownum+1 rownum, ...
		+	from (select @rownum=0), ...
		+
	INSERT INTO ... SELECT ...		INSERT INTO ... SELECT ...

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Current revision as of 13:56, 4 May 2009

Contents 1 Cositas chiquitas 2 Cositas no tan chiquitas 3 Stored procedures 4 Vistas 5 ¿Más elaborados?

Cositas chiquitas

LIKE

IN conjunto finito / NOT IN conjunto finito

LIMIT (desde,)cuantos

IFNULL

Cositas no tan chiquitas

Capacidad de agrupar según el resultado de una función. P.ej.

 -- cantidad de funciones por mes
 select month(diaFn) as mes, year(diaFn) as anio, count(*)
 from formaParte
 group by month(diaFn), year(diaFn);

Stored procedures

Vistas

¿Más elaborados?

ROWNUM para MySQL

 select @rownum:=@rownum+1 rownum, ...
 from (select @rownum=0), ... 

INSERT INTO ... SELECT ...