Question

598
COMPUTER SCIENCE WITH PYTHO
14.4
JOINS
salud plant .
A join is a query that combines rows from two or more tables1. In a join-query, more
table are listed in FROM clause. The function of combining data from multiple tables
joining
Table St
SQL can produce data from several related tables by performing
either a physical or virtual join of the tables.
A. Billed
The WHERE clause is most often used to perform the JOIN function
where two or more tables have common columns.
Pat
Consider the following example :
Penis
SELECT patient_no, description, normal_charge, chargeable La
FROM billed, item
tables being joined one can
B. Ite
WHERE billed.item_code = item.item_code ;
Bill
Ite
join condition
The above query is joining two tables billed and item (see their
structures on the left) by equating their item_codes. The select_list
consists of fields coming from both the tables. When two or more
tables have a column with the same name, the name can be qualified
by using the table name combined with the period (.) in referring to
the column, e.g., billed.patient_no. Note that columns with unique


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Answer 1

Answer:

kya hai yaar

Explanation:

jaake soja..