#selfjoin

[blogmirchi200]

SQL query interview questions for both freshers and experienced.

SQL query interview questions for both freshers and experienced. Read the full article

[satvatholistics]

One of the toughest things in life is the ability to forgive and let go. It is more important for our own personal peace and wellbeing than for others, that we have to forgive. Equally important is to forgive your own selfJoin us on our next Sound Bath session as we together help you relax and make you aware and overcome your feelings of remorse, forgive and let go. In the deeply relaxed state, it is easy to achieve this.

[helrialmia]

Third

first

second

"It hurts?" - Keith carefully touch Shiro's stump only fingertips when he trying to weaken firm knots of muscles on shoulders. 

"No, not now", - Shiro groans when thin fingers bury in especially strong knot, bringing a pleasant pain to his muscles. 

"But when you don't take your hand off by weeks…" 

"Yeah, it's hurt. Not like when I get this". 

"Hmmm. Is this better than pushups?" 

"Why you ask?" - Shiro snort and give him ironic look. Keith smile and yawns, remind Shiro that now is middle of night: "Oh, we must go to bed". 

"Probably. But…" - Keith grins when his hands take cheeks Shiro's ass and squeezes. 

"Keeeeeith" 

"What?" - Keith give him innocent smile and Shiro sighed: 

"We not…" 

"Not what? If you want I will stop but I think this", - Keith held out his hand and touched already hard Shiro's cock, - "say 'yes' to me, isn't it?" 

"Yes, it's yes, but it's not only about sex…" - Shiro turn around to look on Keith face. 

"Shiro", - Keith gave him one of his rare soft look: - "I know it. God, don't be so stupid, I love you, dork! I love you even we was in Garrison and if you don't feel same way…" 

Shiro frozen at moment and embraced Keith: "Keith… I love you too. But I'm don't dork", - said he pouting his lips. 

Keith laughing: "Yeah, of course. Now kiss me and stop talking". 

"Bossy". 

"And proud this". 

It destroyed last borders between they and Shiro gulp kisses Keith's lips and left darkening marks on his neck as if his life depended on it. Keith don't be disagree arched in his hand and give him beautiful moans when his dick rubbed against Shiro's abs. 

"You have lube?" 

"You want?" - Keith be little surprised and Shiro step back: 

"Oh, if you don't, we could stay on some hand-jobs, it's okay with me…" 

"No, I want, I just don't expected… you know, all way. I left lube in my room, but we can do this with something else, I… may be I use my ass to way out fairly often, so…" - Keith shy and don't look at Shiro's face, who looked at him with some amusement. 

"I think it's be me. Anyway we need a lube, I don't want hurt you". 

"You? Oh", - Keith reddened so much when understand that Shiro softly laughed. 

"If you want". 

"I think I will save this offer for the next call. Than go, we can wash up after". 

"Okay, help me?" - Shiro smile when Keith took towel and began to carefully wipe him, stopped to left kiss for his scars.

four

[sagar-jaybhay]

SQL Join | Inner | Left | Right | Outer | Self | Cross Join 2019

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SQL Join | Inner | Left | Right | Outer | Self | Cross Join 2019

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SQL Join By Sagar Jaybhay

Join statement is used to combine data or rows from more than one table which is based on a common field between them. In general 2 tables are related to each other by using foreign key constrains.

There are different types of join

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Inner Join

Outer Join

Cross Join

SQL Join

In this Outer Join is divided into 3 sub joins.

Left Join or left outer join

Right Outer Join or Right Join

Full Join or Full Outer Join.

See below image we use this 2 tables for our join examples. In that 2 tables we have departmentid is common field or column.

Tables to Refer Join

Inner Join

Inner Join will return only matching rows from 2 tables where a condition is matching and unmatched rows simply eliminated. Returns records that have matching values in both tables. Matching rows between 2 tables are only selected.

Inner Join In SQL

General Syntax

SELECT table1.column1,table1.column2,table2.column1,.... FROM table1 INNER JOIN table2 ON table1.matching_column = table2.matching_column;

Actual Query

select * from Employee inner join Department on Employee.DepartmentID=Department.DepartmentID

Inner Join Example

The above query selects all the columns from both table Employee and Department and we have condition added which is they are having equal department ID.

The result fetches by this query are only matched department id if the id is not present in the department table or vice versa then these rows are not populating in the result of the inner join query.

The ultimate meaning of the inner join is only given a matching row between these 2 tables.

Left outer Join or Left Join

The left join returns all the matching rows + nonmatching rows from the left table. In this the rows for which there is no matching row on the right side, the resultset will contain null. Left join also called a left outer join.

In nutshell, we get a complete left table and only matching row from the right table.

General Syntax of a left join:

SELECT table1.column1,table1.column2,table2.column1,.... FROM table1 LEFT JOIN table2 ON table1.matching_column = table2.matching_column;

Left Join or Left Outer Join

Actual Query

select * from Employee as e left join Department on e.DepartmentID=Department.DepartmentID

Result Of Left Join or Left Outer Join

Right Outer Join Or Right Join:

The right join returns all the matching rows + non-matching rows from the right table

Right Join or Right Outer Join

General Syntax:

SELECT table1.column1,table1.column2,table2.column1,.... FROM table1 RIGHT JOIN table2 ON table1.matching_column = table2.matching_column;

Right join also called as right outer join. The rows for which there is no matching row on the left side, the result-set will contain null.

Actual Query

select * from Employee as e right join Department on e.DepartmentID=Department.DepartmentID order by Department.DepartmentID desc

Right Join Result Of Query

Full Outer Join or Full Join

Full join returns all rows from both left and right tables and it includes non-matching rows also. Full join create a result set by combining both left and right to join. The rows for which no matching rows found it will give null values.

Full Outer Join Or Full Join

General Syntax

SELECT table1.column1,table1.column2,table2.column1,.... FROM table1 FULL JOIN table2 ON table1.matching_column = table2.matching_column;

Actual Query

select * from Employee as e full join Department on e.DepartmentID=Department.DepartmentID order by Department.DepartmentID desc

Result Of Full Join Or Full Outer Join

Cross Join

It produces the Cartesian product of 2 tables which is involved in the join. In the above examples, we have Employee table and Department table in Employee table we have 1001 rows and in Department table, we have 11 rows then the output of this join contains

11,011 rows.

In this, if you use on syntax means condition it will throw an error.

Cross Join Result

Self  Join

join means a table join to itself and this is called self-join. It is useful for querying hierarchical data or comparing rows within the same table. A self-join is not any different type of join. Most of the time when the table has a FOREIGN KEY which references its own PRIMARY KEY.

A self-join may use an inner join or left join. When you write a query for self-join at that time remember to write alias for table else it will throw an error.

Create table statement for creating a table.

create table selfjoin (empid int,name varchar(300),managerid int)

after creating a table we can add rows to this table

insert into selfjoin values (1,'sagar',3); insert into selfjoin values (2,'ram',1); insert into selfjoin values (3,'ravi',3); insert into selfjoin values (4,'sham',1); insert into selfjoin values (5,'naga',6); insert into selfjoin values (6,'saga',5);

General Syntax

SELECT column_name(s) FROM table1 T1, table1 T2 WHERE condition;

In our example, we need to find out who is a whose manager.

Actual Query

select a.name,b.name from selfjoin as a inner join selfjoin as b on a.managerid=b.empid

[satvatholistics]

One of the toughest things in life is the ability to forgive and let go. It is more important for our own personal peace and wellbeing than for others, that we have to forgive. Equally important is to forgive your own selfJoin us on our next Sound Bath session as we together help you relax and make you aware and overcome your feelings of remorse, forgive and let go. In the deeply relaxed state, it is easy to achieve this.