{"id":78721,"date":"2024-10-01T21:47:59","date_gmt":"2024-10-01T18:17:59","guid":{"rendered":"https:\/\/nabfollower.com\/blog\/sql-101-introduction-to-structured-query-language-3h9e\/"},"modified":"2024-10-01T21:47:59","modified_gmt":"2024-10-01T18:17:59","slug":"sql-101-introduction-to-structured-query-language-3h9e","status":"publish","type":"post","link":"https:\/\/nabfollower.com\/blog\/sql-101-introduction-to-structured-query-language-3h9e\/","title":{"rendered":"SQL 101: \u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 \u0632\u0628\u0627\u0646 \u067e\u0631\u0633 \u0648 \u062c\u0648\u06cc \u0633\u0627\u062e\u062a\u0627\u0631\u06cc\u0627\u0641\u062a\u0647"},"content":{"rendered":"

Summarize this content to 400 words in Persian Lang \u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 DBMS <\/p>\n

\u0633\u06cc\u0633\u062a\u0645 \u0647\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631\u0647\u0627\u06cc\u06cc \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647 \u0631\u0627 \u0645\u06cc\u0632\u0628\u0627\u0646\u06cc \u0645\u06cc \u06a9\u0646\u0646\u062f.<\/p>\n

\u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647<\/p>\n

\u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647\u060c \u062f\u0627\u062f\u0647\/\u0627\u0637\u0644\u0627\u0639\u0627\u062a\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u0633\u0631\u06cc\u0639 \u062f\u0631 \u0647\u0631 \u0632\u0645\u0627\u0646 \u0645\u0639\u06cc\u0646 \u062a\u0648\u0633\u0637 \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631 \u062c\u0645\u0639 \u0622\u0648\u0631\u06cc \u0648 \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u0645\u06cc \u0634\u0648\u062f.
\n\u062f\u0648 \u0646\u0648\u0639 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u0639\u0628\u0627\u0631\u062a\u0646\u062f \u0627\u0632:
\n1. \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647 \u0631\u0627\u0628\u0637\u0647 \u0627\u06cc (\u0630\u062e\u06cc\u0631\u0647 \u0634\u062f\u0647 \u062f\u0631 \u0631\u062f\u06cc\u0641 \u0647\u0627 \u0648 \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc \u062c\u062f\u0627\u0648\u0644).
\n2. \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u063a\u06cc\u0631 \u0631\u0627\u0628\u0637\u0647 \u0627\u06cc (\u0630\u062e\u06cc\u0631\u0647 \u0634\u062f\u0647 \u062f\u0631 \u0641\u0631\u0645 \u06af\u0631\u0627\u0641\u06cc\u06a9\u06cc).<\/p>\n

\u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 SQL<\/p>\n

SQL (Structured Query Language) \u06cc\u06a9 \u0632\u0628\u0627\u0646 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f\u060c \u0630\u062e\u06cc\u0631\u0647 \u0648 \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627 \u062f\u0631 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0631\u0627\u0628\u0637\u0647 \u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n

\u0627\u0646\u0648\u0627\u0639 \u062f\u0627\u062f\u0647 \u0647\u0627<\/p>\n

\u062f\u0627\u062f\u0647 \u0647\u0627 \u062f\u0631 SQL \u062f\u0631 \u062d\u0627\u0644\u062a \u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641 (\u0627\u0646\u0648\u0627\u0639) \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u0634\u0648\u0646\u062f.<\/p>\n

\u0631\u0634\u062a\u0647 \/ \u0645\u062a\u0646 \/ varchar – \u0628\u0631\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0646\u0627\u0645 \u0648 \u0646\u0648\u0634\u062a\u0647 \u0634\u062f\u0647 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0646\u0642\u0644 \u0642\u0648\u0644 (“\u0633\u0644\u0627\u0645”).
\nInt – \u0627\u0639\u062f\u0627\u062f \u0635\u062d\u06cc\u062d \u06a9\u0647 \u0627\u0639\u062f\u0627\u062f \u0635\u062d\u06cc\u062d \u0647\u0633\u062a\u0646\u062f (3\u060c4\u060c56)
\n\u0634\u0646\u0627\u0648\u0631 – \u0627\u0639\u062f\u0627\u062f \u0628\u0627 \u0627\u0639\u0634\u0627\u0631 (1.24\u060c 7.8)
\nBool – Boolean (\u062f\u0631\u0633\u062a\/\u0646\u0627\u062f\u0631\u0633\u062a).<\/p>\n

\u0631\u0648\u0627\u0628\u0637<\/p>\n

\u062f\u0631 SQL\u060c \u0633\u062a\u0648\u0646 \u0647\u0627 \u0641\u06cc\u0644\u062f\u0647\u0627 \u0648 \u0631\u062f\u06cc\u0641 \u0647\u0627 \u0648\u0631\u0648\u062f\u06cc \u0647\u0633\u062a\u0646\u062f.
\n\u0633\u0647 \u0631\u0627\u0628\u0637\u0647 \u0627\u0635\u0644\u06cc \u062f\u0631 \u062c\u062f\u0627\u0648\u0644 \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n

\u06cc\u06a9 \u0628\u0647 \u06cc\u06a9 – \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0628\u0647 \u062f\u06cc\u06af\u0631\u06cc \u0648 \u0628\u0631\u0639\u06a9\u0633 \u0645\u0631\u062a\u0628\u0637 \u0627\u0633\u062a.
\n\u06cc\u06a9 \u0628\u0647 \u0686\u0646\u062f – \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0628\u0627 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u062c\u062f\u0648\u0644 \u0645\u0631\u062a\u0628\u0637 \u0627\u0633\u062a \u0648 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0641\u0642\u0637 \u0628\u0647 \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u0645\u0631\u062a\u0628\u0637 \u0647\u0633\u062a\u0646\u062f.
\nMany to Many – \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627 \u062f\u0631 \u062c\u062f\u0648\u0644 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0628\u0647 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631 \u062f\u0631 \u062c\u062f\u0648\u0644 \u0645\u0631\u062a\u0628\u0637 \u0647\u0633\u062a\u0646\u062f \u0648 \u0628\u0627\u0644\u0639\u06a9\u0633.<\/p>\n

\u062a\u0631\u06a9\u06cc\u0628<\/p>\n

\u0641\u06cc\u0644\u062f\u0647\u0627 \u062f\u0631 SQL \u0686\u0646\u062f \u0648\u06cc\u0698\u06af\u06cc \u0631\u0627 \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u0646\u062f \u06a9\u0647 \u0628\u0647 \u0637\u0648\u0631 \u0645\u0646\u062d\u0635\u0631 \u0628\u0647 \u0641\u0631\u062f \u0622\u0646\u0647\u0627 \u0631\u0627 \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n

\u06a9\u0644\u06cc\u062f \u0627\u0635\u0644\u06cc – \u0647\u0648\u06cc\u062a \u0645\u0646\u062d\u0635\u0631 \u0628\u0647 \u0641\u0631\u062f \u062f\u0631 \u062c\u062f\u0648\u0644.
\n\u06a9\u0644\u06cc\u062f \u062e\u0627\u0631\u062c\u06cc – \u06a9\u0644\u06cc\u062f \u0627\u0635\u0644\u06cc \u062c\u062f\u0648\u0644 \u062f\u06cc\u06af\u0631.
\n\u06a9\u0644\u06cc\u062f \u062a\u0631\u06a9\u06cc\u0628\u06cc – \u062a\u0631\u06a9\u06cc\u0628 \u062f\u0648 \u06a9\u0644\u06cc\u062f \u0628\u0631\u0627\u06cc \u062a\u0634\u06a9\u06cc\u0644 \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u062f\u0631 \u062c\u062f\u0648\u0644.<\/p>\n

\u06a9\u062f\u0647\u0627\u06cc \u0646\u0645\u0648\u0646\u0647<\/p>\n

\u062a\u0645\u0627\u0645 \u062e\u0637\u0648\u0637 \u06a9\u062f \u062f\u0631 SQL \u0628\u0647 \u06cc\u06a9 \u0646\u06cc\u0645 \u06a9\u0648\u0644\u0648\u0646 (;) \u062e\u062a\u0645 \u0645\u06cc \u0634\u0648\u062f.
\n\u0627\u06cc\u062c\u0627\u062f \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647: create database database_name;
\n\u0646\u0638\u0631 \u062f\u0631 sql: — this is a comment
\n\u0646\u0645\u0627\u06cc\u0634 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647: show databases;
\n\u062a\u063a\u06cc\u06cc\u0631\/\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0645\u062a\u0641\u0627\u0648\u062a: use database_name;
\n\u0627\u06cc\u062c\u0627\u062f \u062c\u062f\u0627\u0648\u0644: create table table_name(
\ntable_id INT
\nname TEXT);
\n\u062f\u0631\u062c \u062f\u0627\u062f\u0647 \u0647\u0627 \u062f\u0631 \u062c\u062f\u0648\u0644: Insert into table_name(table_id, name)
\nvalues(1, ‘one’),
\n(2, two)
\n(3, three);<\/p>\n

\u0628\u0631\u0631\u0633\u06cc \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u062c\u062f\u0648\u0644
\nselect * from table_name; – \u0647\u0645\u0647 \u0648\u0631\u0648\u062f\u06cc \u0647\u0627 \u0627\u0632 \u06cc\u06a9 \u062c\u062f\u0648\u0644
\nselect name from table_name; – \u062a\u0645\u0627\u0645 \u0648\u0631\u0648\u062f\u06cc \u0647\u0627\u06cc \u0633\u062a\u0648\u0646 \u0627\u0632 \u06cc\u06a9 \u062c\u062f\u0648\u0644<\/p>\n

\u06a9\u062f\u0647\u0627\u06cc \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627
\n— To get a glimpse of the table contents.
\nselect * from table_name limit 5;
\n— To return distinct – different, unique(avoid duplicates)
\nselect distinct(name) from table_name;
\n— Using group by
\nselect count(*) from table_name
\ngroup by name;
\n— use of where – filter data
\nselect * from table_name
\nwhere name=”one”;<\/p>\n

\u062a\u0648\u0627\u0628\u0639 \u062c\u0645\u0639<\/p>\n

\u062c\u0645\u0639: sum(column_name)<\/p>\n

\u0645\u06cc\u0627\u0646\u06af\u06cc\u0646: avg(column_name)<\/p>\n

\u0634\u0645\u0627\u0631\u0634: count(column_name)<\/p>\n

Select sum(column_name) as total from table_name;
\n— as brings the return with a customized field\/column name<\/p>\n

CTE – \u0628\u06cc\u0627\u0646 \u062c\u062f\u0648\u0644 \u0645\u0634\u062a\u0631\u06a9<\/p>\n

— \u0646\u062a\u0627\u06cc\u062c \u06cc\u06a9 \u067e\u0631\u0633 \u0648 \u062c\u0648 \u06cc\u0627 \u0639\u0628\u0627\u0631\u062a \u062e\u0627\u0635 \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f
\nwith cte_name as(
\nselect * from table_name
\nwhere column_name=”name”);<\/p>\n

\u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 DBMS<\/strong> <\/p>\n

\u0633\u06cc\u0633\u062a\u0645 \u0647\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631\u0647\u0627\u06cc\u06cc \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647 \u0631\u0627 \u0645\u06cc\u0632\u0628\u0627\u0646\u06cc \u0645\u06cc \u06a9\u0646\u0646\u062f.<\/p>\n

\u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647<\/strong><\/p>\n

\u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647\u060c \u062f\u0627\u062f\u0647\/\u0627\u0637\u0644\u0627\u0639\u0627\u062a\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u0633\u0631\u06cc\u0639 \u062f\u0631 \u0647\u0631 \u0632\u0645\u0627\u0646 \u0645\u0639\u06cc\u0646 \u062a\u0648\u0633\u0637 \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631 \u062c\u0645\u0639 \u0622\u0648\u0631\u06cc \u0648 \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u0645\u06cc \u0634\u0648\u062f.
\n\u062f\u0648 \u0646\u0648\u0639 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0648\u062c\u0648\u062f \u062f\u0627\u0631\u062f \u06a9\u0647 \u0639\u0628\u0627\u0631\u062a\u0646\u062f \u0627\u0632:
\n1. \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647 \u0631\u0627\u0628\u0637\u0647 \u0627\u06cc (\u0630\u062e\u06cc\u0631\u0647 \u0634\u062f\u0647 \u062f\u0631 \u0631\u062f\u06cc\u0641 \u0647\u0627 \u0648 \u0633\u062a\u0648\u0646 \u0647\u0627\u06cc \u062c\u062f\u0627\u0648\u0644).
\n2. \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u063a\u06cc\u0631 \u0631\u0627\u0628\u0637\u0647 \u0627\u06cc (\u0630\u062e\u06cc\u0631\u0647 \u0634\u062f\u0647 \u062f\u0631 \u0641\u0631\u0645 \u06af\u0631\u0627\u0641\u06cc\u06a9\u06cc).<\/p>\n

\u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 SQL<\/strong><\/p>\n

SQL (Structured Query Language) \u06cc\u06a9 \u0632\u0628\u0627\u0646 \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0627\u06cc\u062c\u0627\u062f\u060c \u0630\u062e\u06cc\u0631\u0647 \u0648 \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627 \u062f\u0631 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0647\u0627\u06cc \u0631\u0627\u0628\u0637\u0647 \u0627\u06cc \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc \u0634\u0648\u062f.<\/p>\n

\u0627\u0646\u0648\u0627\u0639 \u062f\u0627\u062f\u0647 \u0647\u0627<\/strong><\/p>\n

\u062f\u0627\u062f\u0647 \u0647\u0627 \u062f\u0631 SQL \u062f\u0631 \u062d\u0627\u0644\u062a \u0647\u0627\u06cc \u0645\u062e\u062a\u0644\u0641 (\u0627\u0646\u0648\u0627\u0639) \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u0634\u0648\u0646\u062f.<\/p>\n

    \n
  1. \u0631\u0634\u062a\u0647 \/ \u0645\u062a\u0646 \/ varchar – \u0628\u0631\u0627\u06cc \u0630\u062e\u06cc\u0631\u0647 \u0646\u0627\u0645 \u0648 \u0646\u0648\u0634\u062a\u0647 \u0634\u062f\u0647 \u062f\u0631 \u062f\u0627\u062e\u0644 \u0646\u0642\u0644 \u0642\u0648\u0644 (“\u0633\u0644\u0627\u0645”).<\/li>\n
  2. Int – \u0627\u0639\u062f\u0627\u062f \u0635\u062d\u06cc\u062d \u06a9\u0647 \u0627\u0639\u062f\u0627\u062f \u0635\u062d\u06cc\u062d \u0647\u0633\u062a\u0646\u062f (3\u060c4\u060c56)<\/li>\n
  3. \u0634\u0646\u0627\u0648\u0631 – \u0627\u0639\u062f\u0627\u062f \u0628\u0627 \u0627\u0639\u0634\u0627\u0631 (1.24\u060c 7.8)<\/li>\n
  4. Bool – Boolean (\u062f\u0631\u0633\u062a\/\u0646\u0627\u062f\u0631\u0633\u062a).<\/li>\n<\/ol>\n

    \u0631\u0648\u0627\u0628\u0637<\/strong><\/p>\n

    \u062f\u0631 SQL\u060c \u0633\u062a\u0648\u0646 \u0647\u0627 \u0641\u06cc\u0644\u062f\u0647\u0627 \u0648 \u0631\u062f\u06cc\u0641 \u0647\u0627 \u0648\u0631\u0648\u062f\u06cc \u0647\u0633\u062a\u0646\u062f.
    \n\u0633\u0647 \u0631\u0627\u0628\u0637\u0647 \u0627\u0635\u0644\u06cc \u062f\u0631 \u062c\u062f\u0627\u0648\u0644 \u0646\u0634\u0627\u0646 \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0627\u0633\u062a.<\/p>\n

      \n
    1. \u06cc\u06a9 \u0628\u0647 \u06cc\u06a9 – \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0628\u0647 \u062f\u06cc\u06af\u0631\u06cc \u0648 \u0628\u0631\u0639\u06a9\u0633 \u0645\u0631\u062a\u0628\u0637 \u0627\u0633\u062a.<\/li>\n
    2. \u06cc\u06a9 \u0628\u0647 \u0686\u0646\u062f – \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0628\u0627 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u062c\u062f\u0648\u0644 \u0645\u0631\u062a\u0628\u0637 \u0627\u0633\u062a \u0648 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0641\u0642\u0637 \u0628\u0647 \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u0645\u0631\u062a\u0628\u0637 \u0647\u0633\u062a\u0646\u062f.<\/li>\n
    3. Many to Many – \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627 \u062f\u0631 \u062c\u062f\u0648\u0644 \u0645\u0633\u062a\u0642\u06cc\u0645\u0627\u064b \u0628\u0647 \u0628\u0633\u06cc\u0627\u0631\u06cc \u0627\u0632 \u0641\u06cc\u0644\u062f\u0647\u0627\u06cc \u062f\u06cc\u06af\u0631 \u062f\u0631 \u062c\u062f\u0648\u0644 \u0645\u0631\u062a\u0628\u0637 \u0647\u0633\u062a\u0646\u062f \u0648 \u0628\u0627\u0644\u0639\u06a9\u0633.<\/li>\n<\/ol>\n

      \u062a\u0631\u06a9\u06cc\u0628<\/strong><\/p>\n

      \u0641\u06cc\u0644\u062f\u0647\u0627 \u062f\u0631 SQL \u0686\u0646\u062f \u0648\u06cc\u0698\u06af\u06cc \u0631\u0627 \u0646\u0634\u0627\u0646 \u0645\u06cc \u062f\u0647\u0646\u062f \u06a9\u0647 \u0628\u0647 \u0637\u0648\u0631 \u0645\u0646\u062d\u0635\u0631 \u0628\u0647 \u0641\u0631\u062f \u0622\u0646\u0647\u0627 \u0631\u0627 \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0645\u06cc \u06a9\u0646\u062f.<\/p>\n

        \n
      1. \u06a9\u0644\u06cc\u062f \u0627\u0635\u0644\u06cc – \u0647\u0648\u06cc\u062a \u0645\u0646\u062d\u0635\u0631 \u0628\u0647 \u0641\u0631\u062f \u062f\u0631 \u062c\u062f\u0648\u0644.<\/li>\n
      2. \u06a9\u0644\u06cc\u062f \u062e\u0627\u0631\u062c\u06cc – \u06a9\u0644\u06cc\u062f \u0627\u0635\u0644\u06cc \u062c\u062f\u0648\u0644 \u062f\u06cc\u06af\u0631.<\/li>\n
      3. \u06a9\u0644\u06cc\u062f \u062a\u0631\u06a9\u06cc\u0628\u06cc – \u062a\u0631\u06a9\u06cc\u0628 \u062f\u0648 \u06a9\u0644\u06cc\u062f \u0628\u0631\u0627\u06cc \u062a\u0634\u06a9\u06cc\u0644 \u06cc\u06a9 \u0641\u06cc\u0644\u062f \u062f\u0631 \u062c\u062f\u0648\u0644.<\/li>\n<\/ol>\n

        \u06a9\u062f\u0647\u0627\u06cc \u0646\u0645\u0648\u0646\u0647<\/strong><\/p>\n

        \u062a\u0645\u0627\u0645 \u062e\u0637\u0648\u0637 \u06a9\u062f \u062f\u0631 SQL \u0628\u0647 \u06cc\u06a9 \u0646\u06cc\u0645 \u06a9\u0648\u0644\u0648\u0646 (;) \u062e\u062a\u0645 \u0645\u06cc \u0634\u0648\u062f.
        \n\u0627\u06cc\u062c\u0627\u062f \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647<\/strong>: create database database_name;<\/code>
        \n\u0646\u0638\u0631 \u062f\u0631 sql<\/strong>: -- this is a comment<\/code>
        \n\u0646\u0645\u0627\u06cc\u0634 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647<\/strong>: show databases;<\/code>
        \n\u062a\u063a\u06cc\u06cc\u0631\/\u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0645\u062a\u0641\u0627\u0648\u062a<\/strong>: use database_name;<\/code>
        \n\u0627\u06cc\u062c\u0627\u062f \u062c\u062f\u0627\u0648\u0644<\/strong>: create table table_name(
        \ntable_id INT
        \nname TEXT);<\/code>
        \n\u062f\u0631\u062c \u062f\u0627\u062f\u0647 \u0647\u0627 \u062f\u0631 \u062c\u062f\u0648\u0644<\/strong>: Insert into table_name(table_id, name)
        \nvalues(1, 'one'),
        \n(2, two)
        \n(3, three);<\/code><\/p>\n

        \u0628\u0631\u0631\u0633\u06cc \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u062c\u062f\u0648\u0644<\/strong>
        \nselect * from table_name;<\/code> – \u0647\u0645\u0647 \u0648\u0631\u0648\u062f\u06cc \u0647\u0627 \u0627\u0632 \u06cc\u06a9 \u062c\u062f\u0648\u0644
        \nselect name from table_name;<\/code> – \u062a\u0645\u0627\u0645 \u0648\u0631\u0648\u062f\u06cc \u0647\u0627\u06cc \u0633\u062a\u0648\u0646 \u0627\u0632 \u06cc\u06a9 \u062c\u062f\u0648\u0644<\/p>\n

        \u06a9\u062f\u0647\u0627\u06cc \u062f\u0633\u062a\u06a9\u0627\u0631\u06cc \u062f\u0627\u062f\u0647 \u0647\u0627<\/strong>
        \n-- To get a glimpse of the table contents.
        \nselect * from table_name limit 5;<\/code>
        \n-- To return distinct - different, unique(avoid duplicates)
        \nselect distinct(name) from table_name;<\/code>
        \n-- Using group by
        \nselect count(*) from table_name
        \ngroup by name;<\/code>
        \n-- use of where - filter data
        \nselect * from table_name
        \nwhere name=\"one\";<\/code><\/p>\n

        \u062a\u0648\u0627\u0628\u0639 \u062c\u0645\u0639<\/strong><\/p>\n

          \n
        1. \n\u062c\u0645\u0639:<\/strong> sum(column_name)<\/code>\n<\/li>\n
        2. \n\u0645\u06cc\u0627\u0646\u06af\u06cc\u0646:<\/strong> avg(column_name)<\/code>\n<\/li>\n
        3. \n\u0634\u0645\u0627\u0631\u0634:<\/strong> count(column_name)<\/code>\n<\/li>\n<\/ol>\n

          Select sum(column_name) as total from table_name;
          \n-- as brings the return with a customized field\/column name<\/code><\/p>\n

          CTE – \u0628\u06cc\u0627\u0646 \u062c\u062f\u0648\u0644 \u0645\u0634\u062a\u0631\u06a9<\/strong><\/p>\n

          — \u0646\u062a\u0627\u06cc\u062c \u06cc\u06a9 \u067e\u0631\u0633 \u0648 \u062c\u0648 \u06cc\u0627 \u0639\u0628\u0627\u0631\u062a \u062e\u0627\u0635 \u0631\u0627 \u0630\u062e\u06cc\u0631\u0647 \u0645\u06cc \u06a9\u0646\u062f
          \nwith cte_name as(
          \nselect * from table_name
          \nwhere column_name=\"name\");<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

          Summarize this content to 400 words in Persian Lang \u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 DBMS \u0633\u06cc\u0633\u062a\u0645 \u0647\u0627\u06cc \u0645\u062f\u06cc\u0631\u06cc\u062a \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647 \u0646\u0631\u0645 \u0627\u0641\u0632\u0627\u0631\u0647\u0627\u06cc\u06cc \u0647\u0633\u062a\u0646\u062f \u06a9\u0647 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647 \u0631\u0627 \u0645\u06cc\u0632\u0628\u0627\u0646\u06cc \u0645\u06cc \u06a9\u0646\u0646\u062f. \u0645\u0642\u062f\u0645\u0647 \u0627\u06cc \u0628\u0631 \u067e\u0627\u06cc\u06af\u0627\u0647 \u0647\u0627\u06cc \u062f\u0627\u062f\u0647 \u067e\u0627\u06cc\u06af\u0627\u0647 \u062f\u0627\u062f\u0647\u060c \u062f\u0627\u062f\u0647\/\u0627\u0637\u0644\u0627\u0639\u0627\u062a\u06cc \u0627\u0633\u062a \u06a9\u0647 \u0628\u0631\u0627\u06cc \u0628\u0627\u0632\u06cc\u0627\u0628\u06cc \u0633\u0631\u06cc\u0639 \u062f\u0631 \u0647\u0631 \u0632\u0645\u0627\u0646 \u0645\u0639\u06cc\u0646 \u062a\u0648\u0633\u0637 \u06a9\u0627\u0645\u067e\u06cc\u0648\u062a\u0631 \u062c\u0645\u0639 \u0622\u0648\u0631\u06cc \u0648 \u0633\u0627\u0632\u0645\u0627\u0646\u062f\u0647\u06cc \u0645\u06cc \u0634\u0648\u062f. …<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[339],"tags":[],"class_list":["post-78721","post","type-post","status-publish","format-standard","hentry","category-dev"],"_links":{"self":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/78721","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/comments?post=78721"}],"version-history":[{"count":0,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/posts\/78721\/revisions"}],"wp:attachment":[{"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/media?parent=78721"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/categories?post=78721"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nabfollower.com\/blog\/wp-json\/wp\/v2\/tags?post=78721"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}