SQL Advanced

SQL Advanced

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SQL Advanced:

SQL TOP: TOP is used to specify the number of rows to display in the result.

SQL LIKE: LIKE is used in the WHERE clause to search for a pattern.

SQL Wildcards: Wildcards are special characters that are used to perform special searches.

SQL IN: IN to select multiple values ​​in a WHERE clause.

SQL BETWEEN: BETWEEN is used in the WHERE clause to select values ​​from a range of data.

SQL ALIAS: ALIAS is used to rename a table or column.

SQL JOINS: JOIN can query data from 2 or more tables.

SQL INNER JOIN: INNER JOIN is used to combine each row in a table with each row in another table.

SQL LEFT JOIN: LEFT JOIN is used to combine the values ​​of the first table with the values ​​of the second table.

SQL RIGHT JOIN: RIGHT JOIN is used to combine the values ​​of the first table with the values ​​of the second table.

SQL FULL JOIN: FULL JOIN is used to combine the values ​​of the first table with the values ​​of the second table.

SQL UNION: UNION is used to accumulate the results of two SELECT statements.

SQL UNION ALL: SQL UNION ALL is used to accumulate the results of two SELECT statements, even rows will be repeated.

SQL SELECT INTO: SELECT INTO is used to copy data from one table to another table.

SQL CREATE DATABASE: CREATE DATABASE is used to create databases.

SQL RESTRICTIONS: Restrictions are used to limit the data type of a column.

SQL NOT NULL: NOT NULL is used to specify that a column does not accept NULL.

SQL UNIQUE: UNIQUE is used to uniquely identify each row in a table

UNIQUE SQL ALTER TABLE: ALTER TABLE to add UNIQUE UNIQUE to a column of a table, after being created.

SQL PRIMARY KEY: PRIMARY KEY is used to uniquely identify each row in a table.

SQL FOREIGN KEY: FOREIGN KEY is used to identify a column that is primary key in another table.

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