Sqlplus Cheat Sheet

Sqlplus Cheat Sheet 2020
Sqlplus Cheat Sheet Pdf

The SQL cheat sheet provides you with the most commonly used SQL statements for your reference. You can download the SQL cheat sheet as follows:

Update: Cheatsheets BETA is here! SQL, Structured Query Language, is a programming language designed to manage data stored in relational databases.SQL operates through simple, declarative statements.

Querying data from a table

Query data in columns c1, c2 from a table

Query all rows and columns from a table

Query data and filter rows with a condition

The PL/SQL cheat sheet includes symbol syntax and methods to help you using PL/SQL.ORACLE PL/SQL is an extension of SQL language that combines the data manipulation power of SQL with the processing power of procedural language to create super-powerful SQL queries.
The Comparitech SQL Cheat Sheet. There is a long list of options that you can put on a SELECT statement. This short guide has only covered the basic structure of the SELECT statement, which is the main tool of SQL’s Data Query Language. You can see a comprehensive list in the Comparitech MySQL Cheat Sheet (PDF). That sheet also includes the.

Query distinct rows from a table

Sort the result set in ascending or descending order

Skip offset of rows and return the next n rows

Group rows using an aggregate function

Filter groups using HAVING clause

Querying from multiple tables

Inner join t1 and t2

Left join t1 and t1

Right join t1 and t2

Perform full outer join

Produce a Cartesian product of rows in tables

Another way to perform cross join

Join t1 to itself using INNER JOIN clause

Using SQL Operators

Combine rows from two queries

Return the intersection of two queries

Subtract a result set from another result set

Query rows using pattern matching %, _

Query rows in a list

Query rows between two values

Check if values in a table is NULL or not

Managing tables

Create a new table with three columns

Delete the table from the database Magicard desktop id software mac download.

Add a new column to the table

Drop column c from the table

Add a constraint

Drop a constraint

Rename a table from t1 to t2

Rename column c1 to c2

Remove all data in a table

Using SQL constraints

Set c1 and c2 as a primary key Download adobe pdf printer driver mac os x.

Set c2 column as a foreign key

Make the values in c1 and c2 unique

Ensure c1 > 0 and values in c1 >= c2

Set values in c2 column not NULL

Modifying Data

Insert one row into a table

Insert multiple rows into a table

Insert rows from t2 into t1

Update new value in the column c1 for all rows

Update values in the column c1, c2 that match the condition

Delete all data in a table

Delete subset of rows in a table

Managing Views

Create a new view that consists of c1 and c2

Create a new view with check option

Create a recursive view

Create a temporary view

Delete a view

Managing indexes

Create an index on c1 and c2 of the t table

Create a unique index on c3, c4 of the t table

Drop an index

Managing triggers

Create or modify a trigger

WHEN

BEFORE – invoke before the event occurs
AFTER – invoke after the event occurs

EVENT

INSERT – invoke for INSERT
UPDATE – invoke for UPDATE
DELETE – invoke for DELETE

TRIGGER_TYPE

FOR EACH ROW
FOR EACH STATEMENT

Delete a specific trigger

In first steps young DBA can greedily soak up all kinds of database knowledges: as RDBMS as NoSQL. We’re realising things like how table index works, how to optimize memory caching, write triggers and procedurs etc. But we still can forget a simple command to create user or show tables list. Also we can get stuck when switching from MySQL to PostgreSQL or whatever else, cause command syntax is different.