![]() ORDER BY urse_name DESC Join 4 Tables with GROUP BY clause If you want to join all four tables and select records based on course_name in alphabetical order then you use the ORDER BY clause. INNER JOIN subchapters ON chapters.chapter_id = subchapters.chapter_id If you want to join all four tables and select those records that have subject_name values are ‘HTML’ then you can use where clause. after learning it, you will be able to use LEFT JOIN, RIGHT JOIN & FULL JOIN keywords. Now, you will learn to join 4 tables with different conditions using the INNER JOIN keyword. If you need to join 4 tables using FULL JOIN, you will get the result in a new table with or without matching values in all tables.įULL JOIN table2 ON table1.table1_id = table2.table1_idįULL JOIN table3 ON table2.table2_id = table3.table2_id įULL JOIN table4 ON table3.table3_id = table4.table3_id įULL JOIN subjects ON urse_id = urse_idįULL JOIN chapters ON subjects.subject_id = chapters.subject_idįULL JOIN subchapters ON chapters.chapter_id = subchapters.chapter_id Join 4 Tables with Conditions RIGHT JOIN subchapters ON chapters.chapter_id = subchapters.chapter_id FULL JOIN 4 Tables RIGHT JOIN chapters ON subjects.subject_id = chapters.subject_id RIGHT JOIN table4 ON table3.table3_id = table4.table3_id RIGHT JOIN table3 ON table2.table2_id = table3.table2_id RIGHT JOIN table2 ON table1.table1_id = table2.table1_id If you need to join 4 tables using INNER JOIN, you will get the result in a new table with matching values in all right tables. LEFT JOIN subchapters ON chapters.chapter_id = subchapters.chapter_id RIGHT JOIN 4 Tables LEFT JOIN chapters ON subjects.subject_id = chapters.subject_id LEFT JOIN table4 ON table3.table3_id = table4.table3_id LEFT JOIN table3 ON table2.table2_id = table3.table2_id LEFT JOIN table2 ON table1.table1_id = table2.table1_id If you need to join 4 tables using LEFT JOIN, you will get the result in a new table with matching values in all left tables. INNER JOIN chapters ON subjects.subject_id = chapters.subject_id INNER JOIN table4 ON table3.table3_id = table4.table3_id INNER JOIN table3 ON table2.table2_id = table3.table2_id INNER JOIN table2 ON table1.table1_id = table2.table1_id If you need to join 4 tables using INNER JOIN, you will get the result in a new table with only matching values in all tables. This table will be joined to chapters table based on a common column chapter_id. This table will be joined to subjects table based on a common column subject_id. This table will be joined to courses table based on a common column course_id. Now, See the structure of the following tables. Each table is related to each other with the Foreign keys. So, Let’s discuss it with the four tables like courses, subjects, chapters, subchapters. You can understand SQL join query for 4 tables with this example. All 4 tables may have the same or the different numbers of rows or columns.A common may have the same or different datatype & name.The common column may have matching values.Each table must contain a common column.All the 4 tables must be stabilized a relationship with a foreign key. ![]() To join 4 tables, You should keep mind the following points – How to Join Tables in SQL The Important Points Don’t worry, Here we will learn to use all these keywords for joining four tables – ![]() You can join 4 tables in SQL using any one of the following keywords. If you need to join four tables in SQL, you are reading the right tutorial that will be very useful for your project. You are going to learn SQL JOIN 4 tables with a simple example.
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