mysql: Update formatting

mysql.md

@@ -1,31 +1,52 @@
 ---
-title: MySql
+title: MySQL
+updated: 2018-12-25
+layout: 2017/sheet
 category: Databases
 ---
+
 ### Create / Delete Database
+
+```sql
 CREATE DATABASE dbNameYouWant
 CREATE DATABASE dbNameYouWant CHARACTER SET utf8
 DROP DATABASE dbNameYouWant
 ALTER DATABASE dbNameYouWant CHARACTER SET utf8
+```
 
 ### Backup Database to SQL File
+
+```bash
 mysqldump -u Username -p dbNameYouWant > databasename_backup.sql
+```
 
 ### Restore from backup SQL File
+
+```bash
 mysql - u Username -p dbNameYouWant < databasename_backup.sql
+```
 
 ### Repair Tables After Unclean Shutdown
+
+```bash
 mysqlcheck --all-databases
 mysqlcheck --all-databases --fast
+```
+
 ### Browsing
+
+```sql
 SHOW DATABASES
 SHOW TABLES
 SHOW FIELDS FROM table / DESCRIBE table
 SHOW CREATE TABLE table
 SHOW PROCESSLIST
 KILL process_number
+```
 
 ### Select
+
+```sql
 SELECT * FROM table
 SELECT * FROM table1, table2, ...
 SELECT field1, field2, ... FROM table1, table2, ...
@@ -37,13 +58,19 @@ category: Databases
 SELECT ... FROM ... WHERE condition LIMIT 10
 SELECT DISTINCT field1 FROM ...
 SELECT DISTINCT field1, field2 FROM ...
+```
 
 ### Select - Join
+
+```sql
 SELECT ... FROM t1 JOIN t2 ON t1.id1 = t2.id2 WHERE condition
 SELECT ... FROM t1 LEFT JOIN t2 ON t1.id1 = t2.id2 WHERE condition
 SELECT ... FROM t1 JOIN (t2 JOIN t3 ON ...) ON ...
+```
 
 ### Conditions
+
+```sql
 field1 = value1
 field1 <> value1
 field1 LIKE 'value _ %'
@@ -53,48 +80,73 @@ category: Databases
 field1 IS NOT IN (value1, value2)
 condition1 AND condition2
 condition1 OR condition2
+```
 
 ### Insert
+
+```sql
 INSERT INTO table1 (field1, field2, ...) VALUES (value1, value2, ...)
+```
 
 ### Delete
+
+```sql
 DELETE FROM table1 / TRUNCATE table1
 DELETE FROM table1 WHERE condition
 DELETE FROM table1, table2 FROM table1, table2 WHERE table1.id1 =
   table2.id2 AND condition
+```
 
 ### Update
 
+```sql
 UPDATE table1 SET field1=new_value1 WHERE condition
 UPDATE table1, table2 SET field1=new_value1, field2=new_value2, ... WHERE
   table1.id1 = table2.id2 AND condition
+```
 
 ### Create / Delete / Modify Table
 
-    *Create*
+#### Create
+
+```sql
 CREATE TABLE table (field1 type1, field2 type2, ...)
 CREATE TABLE table (field1 type1, field2 type2, ..., INDEX (field))
 CREATE TABLE table (field1 type1, field2 type2, ..., PRIMARY KEY (field1))
 CREATE TABLE table (field1 type1, field2 type2, ..., PRIMARY KEY (field1,
 field2))
+```
 
+```sql
 CREATE TABLE table1 (fk_field1 type1, field2 type2, ...,
   FOREIGN KEY (fk_field1) REFERENCES table2 (t2_fieldA))
     [ON UPDATE|ON DELETE] [CASCADE|SET NULL]
+```
 
+```sql
 CREATE TABLE table1 (fk_field1 type1, fk_field2 type2, ...,
  FOREIGN KEY (fk_field1, fk_field2) REFERENCES table2 (t2_fieldA, t2_fieldB))
+```
 
+```sql
 CREATE TABLE table IF NOT EXISTS (...)
+```
 
+```sql
 CREATE TEMPORARY TABLE table (...)
+```
 
-    *Drop*
+#### Drop
+
+```sql
 DROP TABLE table
 DROP TABLE IF EXISTS table
 DROP TABLE table1, table2, ...
+```
 
-    *Alter*
+#### Alter
+
+```sql
 ALTER TABLE table MODIFY field1 type1
 ALTER TABLE table MODIFY field1 type1 NOT NULL ...
 ALTER TABLE table CHANGE old_name_field1 new_name_field1 type1
@@ -106,58 +158,109 @@ category: Databases
 ALTER TABLE table ADD new_name_field1 type1 AFTER another_field
 ALTER TABLE table DROP field1
 ALTER TABLE table ADD INDEX (field);
+```
 
-    *Change field order*
+#### Change field order
+
+```sql
 ALTER TABLE table MODIFY field1 type1 FIRST
 ALTER TABLE table MODIFY field1 type1 AFTER another_field
 ALTER TABLE table CHANGE old_name_field1 new_name_field1 type1 FIRST
 ALTER TABLE table CHANGE old_name_field1 new_name_field1 type1 AFTER
   another_field
+```
 
 ### Keys
+
+```sql
 CREATE TABLE table (..., PRIMARY KEY (field1, field2))
 CREATE TABLE table (..., FOREIGN KEY (field1, field2) REFERENCES table2
 (t2_field1, t2_field2))
-    
+```
 
 ### Users and Privileges
+
+```sql
 GRANT ALL PRIVILEGES ON base.* TO 'user'@'localhost' IDENTIFIED BY 'password';
 GRANT SELECT, INSERT, DELETE ON base.* TO 'user'@'localhost' IDENTIFIED BY 'password';
 REVOKE ALL PRIVILEGES ON base.* FROM 'user'@'host'; -- one permission only
 REVOKE ALL PRIVILEGES, GRANT OPTION FROM 'user'@'host'; -- all permissions
+```
 
+```sql
 SET PASSWORD = PASSWORD('new_pass')
 SET PASSWORD FOR 'user'@'host' = PASSWORD('new_pass')
 SET PASSWORD = OLD_PASSWORD('new_pass')
+```
 
+```sql
 DROP USER 'user'@'host'
-    host ‘%’ indicates any host.
+```
 
+Host ‘%’ indicates any host.
 
 ### Main Data Types
-     TINYINT (1o: -217+128) SMALLINT (2o: +-65 000)
+
-     MEDIUMINT (3o: +-16 000 000) INT (4o: +- 2 000 000 000)
+```sql
+TINYINT (1o: -217+128)
+SMALLINT (2o: +-65 000)
+MEDIUMINT (3o: +-16 000 000)
+INT (4o: +- 2 000 000 000)
 BIGINT (8o: +-9.10^18)
+```
 
+```sql
 Precise interval: -(2^(8*N-1)) -> (2^8*N)-1
-     /!\ INT(2) = "2 digits displayed" -- NOT "number with 2 digits max"
+```
 
-     FLOAT(M,D) DOUBLE(M,D) FLOAT(D=0->53)
+⚠ INT(2) = "2 digits displayed" -- NOT "number with 2 digits max"
-     /!\ 8,3 -> 12345,678 -- NOT 12345678,123!
 
-     TIME (HH:MM) YEAR (AAAA) DATE (AAAA-MM-JJ) DATETIME (AAAA-MM-JJ HH:MM; années 1000->9999)
+```sql
+FLOAT(M,D)
+DOUBLE(M,D)
+FLOAT(D=0->53)
+```
+
+⚠ 8,3 -> 12345,678 -- NOT 12345678,123!
+
+```sql
+TIME (HH:MM)
+YEAR (AAAA)
+DATE (AAAA-MM-JJ)
+DATETIME (AAAA-MM-JJ HH:MM; années 1000->9999)
 TIMESTAMP (like DATETIME, but 1970->2038, compatible with Unix)
+```
 
-     VARCHAR (single-line; explicit size) TEXT (multi-lines; max size=65535) BLOB (binary; max size=65535)
+```sql
-     Variants for TEXT&BLOB: TINY (max=255) MEDIUM (max=~16000) LONG (max=4Go)
+VARCHAR (single-line; explicit size)
-     Ex: VARCHAR(32), TINYTEXT, LONGBLOB, MEDIUMTEXT
+TEXT (multi-lines; max size=65535)
+BLOB (binary; max size=65535)
+```
 
+Variants for TEXT&BLOB: `TINY` (max=255), `MEDIUM` (max=~16000), and `LONG` (max=4Go). Ex: `VARCHAR(32)`, `TINYTEXT`, `LONGBLOB`, `MEDIUMTEXT`
+
+```sql
 ENUM ('value1', 'value2', ...) -- (default NULL, or '' if NOT NULL)
+```
 
 ### Reset Root Password
+
+```bash
 $ /etc/init.d/mysql stop
+```
+
+```bash
 $ mysqld_safe --skip-grant-tables
+```
+
+```bash
 $ mysql # on another terminal
 mysql> UPDATE mysql.user SET password=PASSWORD('new_pass') WHERE user='root';
+```
+
+```bash
 ## Switch back to the mysqld_safe terminal and kill the process using Control + \
-    $ /etc/init.d/mysql start</code>
+$ /etc/init.d/mysql start
+```
+
+Your commands may vary depending on your OS.