Merge 7fef9c17fa into 10872e02d1

add docker init command to docker cheatsheet

databases/mysql.sh

@@ -16,3 +16,32 @@ GRANT ALL PRIVILEGES ON prospectwith.* TO 'power'@'localhost' WITH GRANT OPTION;
 CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password'; # Create user
 
 mysql -u root -pmypassword -e "MY SQL QUERY" &>> query.log & disown # Run SQL query in the background
+
+# *****************************************************************************
+# CRUD Operations
+# *****************************************************************************
+
+# create
+CREATE DATABASE new_dateabase; # cerates new database
+
+CREATE TABLE table_name (
+col_name int # datatypes: int, varchar, char, binary, image, date, DateTime 
+col_name PRIMARY KEY UNIQUE NOT NULL AUTOINCREMENT; # it will create col_name as primary key for table which is unique and  not null. AUTOINCREMENT start from 1 and it will increase after every insert
+
+
+);
+
+# Read 
+SELECT * FROM table_name; # select all columns and rows from that table
+
+SELECT col1, col2 FROM table_name WHERE condition; # select data which will satisfy all conditions and specific columns like col1 and col2
+
+# Update 
+update table_name SET col = xyz WHERE condition; # It will update specific columns for rows that meet given conditions.
+
+# Delete
+DELETE FROM table_name WHERE condition; # it will delete all rows that meet given condition.
+
+DROP table_name; # delete the table from the database.
+
+TRUNCATE table_name; # delete all rows and free up space in the database.

languages/C.txt

@@ -149,6 +149,7 @@ Operators
   ^=   	bitwise exclusive or and store
   |=   	bitwise or and store
   ,    	separator as in   ( y=x,z=++x )
+  ;     statement terminator.
 
 
 Operator precedence

tools/docker.sh

@@ -2,7 +2,7 @@
 # DOCKER
 ##############################################################################
 
-
+docker init                                 # Creates Docker-related starter files 
 docker build -t friendlyname .              # Create image using this directory's Dockerfile
 docker run -p 4000:80 friendlyname          # Run "friendlyname" mapping port 4000 to 80
 docker run -d -p 4000:80 friendlyname       # Same thing, but in detached mode