squirrel532

SQL languages

DDL is short name of Data Definition Language, which deals with database schemas and descriptions, of how the data should reside in the database.

DML is short name of Data Manipulation Language which deals with data manipulation, and includes most common SQL statements such SELECT, INSERT, UPDATE, DELETE etc, and it is used to store, modify, retrieve, delete and update data in database.

DCL is short name of Data Control Language which includes commands such as GRANT, and mostly concerned with rights, permissions and other controls of the database system.

Datatypes

Text types

squirrel532

#!/bin/bash
#
# This pre-commit hook checks that you havn't left and DONOTCOMMIT tokens in
# your code when you go to commit.
#
# To use this script copy it to .git/hooks/pre-commit and make it executable.
#
# This is provided just as an example of how to use a pre-commit hook to
# catch nasties in your code.

squirrel532

1. Clone project

2. Checkout all branches that contain the files that should be moved

3. Delete the remote

4. Run the filter-branch command:

   git filter-branch --tree-filter 'mkdir -p /path/to/tmp; mv * /path/to/tmp; mkdir subdir; mv /path/to/tmp/* subdir/' --tag-name-filter cat --prune-empty -- --all

   • All files are first copied to a temporary dir and move from there to the new destination

• Existing tags are updated

squirrel532

CC=gcc
CCFLAGS=-Wall
LDFLAGS=
SOURCES=$(wildcard *.c)
OBJECTS=$(SOURCES:.c=.o)
TARGET=des

all: $(TARGET)

$(TARGET): $(OBJECTS)

squirrel532

#!/bin/bash

# tty_pipe=$(tty)
# echo "\$tty_pipe = $tty_pipe"

[ -z "$USER" ] && echo -ne "User: " && read USER
[ -z "$PASS" ] && echo -ne "Password: " && read -s PASS

function autoptt()
{