Ohne Titel

Manipulación Avanzada

sintaxis mysql

Indices

vistas

Procedimientos Almacenados

Disparadores

Consultas Avanzadas

Subconsultas

CREATE [ONLINE|OFFLINE] [UNIQUE|FULLTEXT|SPATIAL] INDEX index_name

[index_type]

ON tbl_name (index_col_name,...)

[index_option] ...

CREATE INDEX nombre_indice ON nombrede_tabla(columna [columna2...]);

CREATE INDEX estaríamos creando uno o varios índices ordinarios en una tabla existente.

CREATE FULLTEXT INDEX nombre_indice ON nombre_tabla(columna [columna2...]);

CREATE VIEW IF NOT EXISTS nombre_de_la_vista AS consulta_de_seleccion;

CREATE TRIGGER nombre_disp momento_disp evento_disp ON nombre_tabla FOR EACH ROW sentencia_disp

CREATE PROCEDURE proc_sacar_clientes_tipo (IN tipoCliente INT)

-> BEGIN

-> SELECT * FROM clientes WHERE tipo = tipoCliente;

-> END

Inner Join

SELECT column_name(s) FROM table1 INNER JOIN table2 ON table1.column_name=table2.column_name;

Left Join

SELECT column_name(s) FROM table1 LEft JOIN table2 ON table1.column_name=table2.column_name;

Right Join

SELECT column_name(s) FROM table1 RIGHT JOIN table2 ON table1.column_name=table2.column_name;

DELETE FROM t1 WHERE s11 > ANY (SELECT COUNT(*) /* no hint */ FROM t2 WHERE NOT EXISTS (SELECT * FROM t3 WHERE ROW(5*t2.s1,77)= (SELECT 50,11*s1 FROM t4 UNION SELECT 50,77 FROM (SELECT * FROM t5) AS t5)));