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pphamnham/TeachmeSQL.md

Last active August 22, 2016 13:08
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  1. pphamnham revised this gist Aug 22, 2016. 1 changed file with 23 additions and 3 deletions.
    26 changes: 23 additions & 3 deletions TeachmeSQL.md
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    Original file line number Diff line number Diff line change
    @@ -1,13 +1,33 @@
    #SQL
    ## SELECT THE EXISTING DATABASE
    #GENERAL CONCEPT
    ### SELECT THE EXISTING DATABASE
    ```USE name_database; ```
    ##DISPLAY EXISTING TABLES
    ###DISPLAY EXISTING TABLES
    ```SHOW TABLES; ```
    ##CREATE NEW TABLE
    ###CREATE NEW TABLE
    ```ruby
    CREATE TABLE students(
    id INT NOT NULL PRIMARY KEY,
    name VARCHAR(40) NOT NULL,
    class VARCHAR(20),
    age INT);
    ```

    **Using AutoIncrement to make sure the key automatically update**

    ```
    CREATE TABLE subjects (
    subjectid INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
    title VARCHAR(50) NOT NULL
    );
    ```

    ###DESCRIBE STRUCTURE OF THE TABLE
    ```DESCRIBE students```
    ###DELETE
    ```DROP TABLE students```
    ###ADD DATA
    ```ruby
    INSERT INTO students VALUES (XX,XX,XX)
    INSERT INTO students(id, firstname, lastname) VALUES (xx,xx,xx);
    ```
  2. pphamnham created this gist Aug 22, 2016.
    13 changes: 13 additions & 0 deletions TeachmeSQL.md
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    Original file line number Diff line number Diff line change
    @@ -0,0 +1,13 @@
    #SQL
    ## SELECT THE EXISTING DATABASE
    ```USE name_database; ```
    ##DISPLAY EXISTING TABLES
    ```SHOW TABLES; ```
    ##CREATE NEW TABLE
    ```ruby
    CREATE TABLE students(
    id INT NOT NULL PRIMARY KEY,
    name VARCHAR(40) NOT NULL,
    class VARCHAR(20),
    age INT);
    ```