How do I show comments in MySQL?

There are three syntaxes that you can use to create a comment within your SQL statement in MySQL.

1. Syntax Using # symbol. The syntax for creating a SQL comment in MySQL using # symbol is: # comment goes here.
2. Syntax Using — symbol.
3. Syntax Using /* and */ symbols.

How do I get latest entry in SQL?

But there are ways to get the last record in MySql, SQL Server, Oracle etc. databases….Oracle syntax:

1. SELECT column_name FROM table_name.
2. ORDER BY column_name DESC.
3. WHERE ROWNUM <=1;

How do you make a comment in SQL query?

Comments Within SQL Statements

1. Begin the comment with a slash and an asterisk (/*). Proceed with the text of the comment. This text can span multiple lines.
2. Begin the comment with — (two hyphens). Proceed with the text of the comment. This text cannot extend to a new line.

How do you write a complex SQL query?

How to build complex queries using dbForge Studio for SQL Server

1. Add tables to the query. Next, you can start adding tables and views to the query.
2. Create a subquery.
3. Create JOINs between the tables.
4. Build WHERE or HAVING clause.
5. Create GROUP BY or ORDER BY clause.
6. View and execute the query.
7. Analyze the result.

Can you write comments in SQL?

In SQL Server, a comment that starts with /* symbol and ends with */ and can be anywhere in your SQL statement. This method of commenting can span several lines within your SQL.

How do I comment a query in MySQL workbench?

MySQL Server supports three comment styles: From a # character to the end of the line. From a — sequence to the end of the line. In MySQL, the — (double-dash) comment style requires the second dash to be followed by at least one whitespace or control character (such as a space, tab, newline, and so on).

How do I get last 5 rows in SQL?

1. You need to count number of rows inside table ( say we have 12 rows )
2. then subtract 5 rows from them ( we are now in 7 )
3. select * where index_column > 7 select * from users where user_id > ( (select COUNT(*) from users) – 5) you can order them ASC or DESC.

What is the latest version of SQL Server?

Microsoft SQL Server 2019
The current version is Microsoft SQL Server 2019, released November 4, 2019. The RTM version is 15.0. 2000.5.

How do you comment a line in SQL procedure?

To create line comments you just use two dashes “–” in front of the code you want to comment. You can comment out one or multiple lines with this technique. In this example the entire line is commented out.

What are the common MySQL queries?

MySQL Queries. A list of commonly used MySQL queries to create database, use database, create table, insert record, update record, delete record, select record, truncate table and drop table are given below. MySQL create database is used to create database. For example.

How to return all records from a mySQL table in PHP?

The following example will return all the records from the tutorials_tbl table − PHP uses mysqli query () or mysql_query () function to select records from a MySQL table. This function takes two parameters and returns TRUE on success or FALSE on failure.

What is the return value of MySQL_Query?

Return Values. For SELECT, SHOW, DESCRIBE, EXPLAIN and other statements returning resultset, mysql_query () returns a resource on success, or false on error. For other type of SQL statements, INSERT, UPDATE, DELETE, DROP, etc, mysql_query () returns true on success or false on error.

What is create query in MySQL with example?

MySQL create query is used to create a table, view, procedure and function. For example: CREATE TABLE customers. (id int(10), name varchar(50), city varchar(50), PRIMARY KEY (id ) ); CREATE TABLE customers (id int (10), name varchar (50), city varchar (50), PRIMARY KEY (id ) );