-- create CREATE TABLE EMPLOYEE ( empId INTEGER PRIMARY KEY, name TEXT NOT NULL, dept TEXT NOT NULL ); -- insert INSERT INTO EMPLOYEE VALUES (0001, 'Clark', 'Sales'); INSERT INTO EMPLOYEE VALUES (0002, 'Dave', 'Accounting'); INSERT INTO EMPLOYEE VALUES (0003, 'Ava', 'Sales'); -- fetch SELECT * FROM EMPLOYEE WHERE dept = 'Sales';
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CREATE TABLE table_name (
column1 datatype,
column2 datatype,
....);
CREATE TABLE EMPLOYEE (
empId INTEGER PRIMARY KEY,
name TEXT NOT NULL,
dept TEXT NOT NULL
);
ALTER TABLE Table_name ADD column_name datatype;
INSERT INTO EMPLOYEE VALUES (0001, 'Dave', 'Sales');
DROP TABLE table_name;
INSERT INTO table_name (column1, column2, column3, ...) VALUES (value1, value2, value3, ...);
Note: Column names are optional.
INSERT INTO EMPLOYEE VALUES (0001, 'Ava', 'Sales');
SELECT column1, column2, ...
FROM table_name
[where condition];
SELECT * FROM EMPLOYEE where dept ='sales';
UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;
UPDATE EMPLOYEE SET dept = 'Sales' WHERE empId='0001';
DELETE FROM table_name where condition;
DELETE from EMPLOYEE where empId='0001';
CREATE [UNIQUE] INDEX index_name on table_name(column_name);
DROP INDEX index_name ON table_name;
CREATE VIEW View_name AS
Query;
SELECT * FROM View_name;
ALTER View View_name AS
Query;
DROP VIEW View_name;
SELECT * FROM TABLE1 INNER JOIN TABLE2 where condition;
SELECT * FROM TABLE1 LEFT JOIN TABLE2 ON condition;
SELECT * FROM TABLE1 RIGHT JOIN TABLE2 ON condition;
SELECT select_list from TABLE1 CROSS JOIN TABLE2;