In this lesson, we'll go over basic Structured Query Language (SQL) commands for accessing and managing data in a database management system (DBMS). A DBMS is the software that allows you access and manipulate the data found within the database. SQL is the database language used to perfor...
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To run SQL commands in a batch, you can put all your SQL commands into a text file and execute these commands in this file in SQL*PLUS.Use your favorite editor to type in your SQL queries into a text file.For Example,$ more table.sql DROP TABLE employee /...
The “\q” command is used to quit or exit the SQL Shell (psql): \q That’s all! We have discussed various basic yet very important psql commands. Conclusion psql is a command-line interface used to perform various database tasks efficiently. For instance, using psql different commands ca...
Take some time to go through these before moving on to the Mid-Level SQL section.A few things to keep in mind when going throughIf no specific columns or values are called out to return, assume that it’s asking for all the columns (splat *). If it does ask for specific information...
Execute SQL*Plus commands that do not require a database connection. The SET command, for example, does not require you to be connected. DISCONNECT is useful if you want to leave a SQL*Plus session open for a long period of time but do not wish to tie up a database connection. ...
These are some of the basic commands and options to look out for, especially for database administrators during their first encounter with the pgsql tool for working with an instance of Azure Database for PostgreSQL. One can always explore the exhaustive reference of commands by using the comman...
The SQL Worksheet allows you to use a selection of SQL*Plus commands. SQL*Plus commands have to be interpreted by the SQL Worksheet before being passed to the database. Some commands are not supported and are hence ignored and are not sent to the Oracle database. For a list of unsupporte...
Using SQLCMD, you can control, among other things, exact database creation options such as the directory where the physical files are stored. Queries With the database created, I needed to define the schema. Naturally, I could have fired up SQLCMD and entered T-SQL ...