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| 游戏 | SQL Avanzado |
| 分类 | 跑酷竞速 |
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| 下载 | ![]() |
| 介绍 |
Course of advanced SQL, explained step by step, in 40 lessons:
A. - SQL TOP: TOP is used to specify the number of rows to display in the result. 2. - SQL Lite: LIKE is used in the WHERE clause to search for a pattern. 3. - SQL Wildcards: Wildcards (wildcards) are special characters that are used to perform special searches. 4. - SQL IN: IN to select multiple values ??in a WHERE clause. 5. - SQL BETWEEN: BETWEEN is used in the WHERE clause to select values ??from a range of data. 6. - SQL ALIAS is used to rename a table or column. 7. - SQL JOINS: JOINs can query data from 2 or more tables. 8. - SQL INNER JOIN: INNER JOIN is used to combine each row in a table with each row in another table. 9. - SQL LEFT JOIN: LEFT JOIN is used to combine the values ??of the first table with the values ??of the second table. 10. - SQL RIGHT JOIN: RIGHT JOIN is used to combine the values ??of the first table with the values ??of the second table. 11. - SQL FULL JOIN: FULL JOIN is used to combine the values ??of the first table with the values ??of the second table. 12. - SQL UNION: UNION is used to accumulate the results of two SELECT statements. 13. - SQL UNION ALL: SQL UNION ALL is used to accumulate the results of two SELECT statements. 14. - SQL SELECT INTO: SELECT INTO is used to copy data from one table to another table. 15. - SQL CREATE DATABASE: CREATE DATABASE is used to create databases. 16. - SQL RESTRICTIONS: Restrictions are used to limit the data type of a column. 17. - SQL NOT NULL: NOT NULL is used to specify that a column does not accept NULL. 18. - SQL UNIQUE: UNIQUE is used to uniquely identify each row in a table. 19. - UNIQUE SQL ALTER TABLE: ALTER TABLE to add UNIQUE UNIQUE to a column of a table, after being created. 20. - SQL PRIMARY KEY: PRIMARY KEY is used to uniquely identify each row in a table. 21. - SQL FOREIGN KEY: FOREIGN KEY is used to identify a column that is primary key in another table. 22. - SQL CHECK: CHECK to limit the range of values ??in a column. 23. - SQL DEFAULT: DEFAULT default value for a column 24. - SQL CREATE INDEX: CREATE INDEX to create an index on a table. 25. - SQL DROP: DROP serves to remove any item (index, table or database). 26. - SQL TRUNCATE: TRUNCATE is used to erase the data (not structure) of a table 27. - SQL ALTER: ALTER is used to modify the definition of a column in a table. 28. - SQL AUTO INCREMENT: AUTO INCREMENT generating auto-incrementing number for a column in a table. 29. - SQL VIEWS: VIEWS serves to create a virtual table (not an actual table) with the results of a query. 30. - SQL DATES: DATE defines different data types for dates and times. 31. - SQL NULL VALUES: NULL represents an undefined value. 32. - FUNCTIONS SQL NULL: NULL FUNCTIONS used to use NULL values. 33. - SQL DATA TEXT MySQL: MySQL TEXT DATA defines the different formats of text fields for MySQL. 34. - SQL NUMERIC MySQL: MySQL NUMERICAL DATA defines the different formats of numeric fields for MySQL. 35. - SQL DATA DATE MySQL: MySQL DATE DATA defines the different formats for date fields MySQL. ADVANCED SQL is a manual very complete. |
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