![]() ![]() However, the DROP clause is used to delete the entire table with all the records on it.) ( Note: that the DELETE clause is used to delete some records from a table or delete all the records and it won’t delete the table itself. You have to write a table name after the DELETE FROM clause, from which you want to delete records.You can use the WHERE clause with DELETE queries to delete the selected rows. SQLite DELETE query is used to remove existing records from a specified table. You should now see that the Department Id value is now 3 as following: Now, let’s verify that the student with ID 6 is updated, by running the following command: SELECT * FROM Students WHERE StudentId = 6 The SET clause will update the value of the Department Id for the selected students to be 3.In the WHERE clause, we filtered all the students to select only the row for StudentId = 6.In the UPDATE clause, we specified that we want to update the table Students. This should run successfully and you shouldn’t get any output: In the following UPDATE statement, we will update the DepartmentId for the Student with StudentId = 6 to be 3: UPDATE Students If you didn’t specify a WHERE clause, all the rows will be updated. Only the rows that the expression evaluates to true are updated. You can specify a WHERE clause to specify some rows only.You have to write “SET clause” which is used to write the column name to update and the value to be updated.After the “update clause”, you should write the table name to update.The following is the syntax of the UPDATE clause: The UPDATE clause updates a table by changing a value for a specific column. You can use WHERE clause with UPDATE query to update selected rows. SQLite UPDATE Query is used to modifying the existing records in a table. Then you should see the two students returned from that query as following: Now, let’s verify that the two students were inserted into the Students table by running the following query: SELECT * FROM Students The four values “ 12, ‘Aly’, 4, ‘’” will be inserted in all the four columns of the Students table in the same order the columns are defined. In the first statement, we listed the columns names “ StudentId, StudentName, DepartmentId, DateOfBirth“.However, in the second statement, we didn’t. The second student with StudentId=12, StudentName = Aly, DepartmentId = 4, and DateOfBirth = ′.The first student with StudentId=11, StudentName = Ahmad, DepartmentId = 4, and DateOfBirth =.This should run successfully and there is no output for this: INSERT INTO Students VALUES(12, 'Aly', 4, '') In the following example, we will insert 2 rows into the students table, one for each student: INSERT INTO Students(StudentId, StudentName, DepartmentId, DateOfBirth) If you want to insert multiple rows, you should write multiple INSERT clauses, one for each row. Each INSERT clause inserts only one row.After the VALUES clause, you should list the values to be inserted.If you don’t write the columns name, the values will be inserted into all the columns found in the table with the same order, the columns are defined in the table.You can ignore the columns name and don’t write to them. ![]() After the table name you write the list of columns, you want to insert the values into.After the INSERT clause, you should state which table you need to insert the values into.SQLite INSERT is used to insert records into a specified table of the database. Now you are ready to run any type of query on the database. ![]()
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