Sql mysql comment

These comments can appear on a single line or span across multiple lines. The comment syntax just described applies to how the mysqld server parses SQL statements. The mysql client program also performs some parsing of statements before sending them to the server.

It does this to determine statement boundaries within a multiple-statement input line. It only executes the SQL part except for executable comment , which we will discuss in the next section. This method of commenting can only span a single line within your SQL and must be at the end of the line. SQL HOME SQL Intro SQL Syntax SQL Select SQL Select Distinct SQL Where SQL An Or, Not SQL Order By SQL Insert Into SQL Null Values SQL Update SQL Delete SQL Select Top SQL Min and Max SQL Count, Avg, Sum SQL Like SQL Wildcards SQL In SQL Between SQL Aliases SQL Joins SQL Inner Join SQL Left Join SQL Right Join SQL Full Join SQL Self Join SQL.

SQL one question is raised about the SQL comments ,please give me complete explanation. Active years, month ago. With the exception of hints, comments within SQL statements do not affect the statement execution. Comments Within SQL Statements.

For example, you can include a comment in a statement that describes the purpose of the statement within your application. Riesenauswahl an Produkten rund ums Baby. Kommentare können sowohl in einer gesonderten Zeile als auch innerhalb einer Transact- SQL Transact- SQL -Anweisung eingefügt werden. There are three types in which comments can be written:-1.

This SQL tutorial explains how to use comments within your SQL statements with syntax and examples. In SQL , you can comment your code just like any other language. SQL is a standard language for storing, manipulating and retrieving data in databases.

Changing mysql table comment. Ask Question Asked years, month ago. This comment can be placed anywhere in the code. SQL et des explications sur les principales commandes pour lire, insérer, modifier et supprimer des données dans une base.

Everything between two dashes(–) and carriage returns is considered as comment. MySQL Enterprise Edition. Secon C-style comments are allowed as well. Doch, umgekehrt schon.

This can be useful for documenting queries that you store in files. Did you know that you can place comments within your SQL statements in Oracle? When you create table and add columns, at that time there is a DESCRIPTION fiel where we can specify the comments for that column. So how do I include these column level comments to be present in my script. Thanks for your advice.

You can create a SQL comment on a single line in your SQL statement in PostgreSQL. Auch Microsoft Access versteht SQL.