From 7fef9c17fa23e8fe97513c78a43dbc329561786e Mon Sep 17 00:00:00 2001 From: Prathamesh Mulay <76168141+prathamesh168@users.noreply.github.com> Date: Mon, 1 Jan 2024 18:54:04 +0530 Subject: [PATCH] Update mysql.sh Added the CRUD operatinos --- databases/mysql.sh | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/databases/mysql.sh b/databases/mysql.sh index 075e6098..54a78a49 100644 --- a/databases/mysql.sh +++ b/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.