Is semicolon necessary in mysql?
If you’re writing single statements in, say, PHP and then sending them to MySQL for processing, the semicolon is optional. You ask if it “might have possible negative effects maybe during server high load, caching etc.” The answer to that is ‘No’.
Is semicolon necessary in sqlite?
If you’re using an interactive application, such as the sqlite3 command-line tool, then you’ll need to use a semicolon to indicate the end of a statement. The semicolon is not strictly required for single statements, however, as it is properly a statement separator and not a statement terminator.
Is semicolon necessary in Oracle?
use semicolon in sql script files to separate sql statements that tell client software (SQL*Plus, SQL Developer) what are the single statements to be executed.
What Does a colon mean in SQL?
The colon (:) is used to select “slices” from arrays. … In certain SQL dialects (such as Embedded SQL), the colon is used to prefix variable names.
How do you insert a semicolon in SQL?
SQL Prompt will add those semicolons for you if you use this quick shortcut: CTRL+B, C. This means hold the Control key, then press the B, then press the C.
What is semi colon in Oracle?
A PL/SQL program is made up of a series of declarations and statements. The first semicolon indicates the end of the single executable statement within the IF-END IF construct. … The second semicolon terminates the IF statement itself.
What does a forward slash mean in SQL?
Forward Slash (/)
A forward slash is used to execute the SQL statement or PL/SQL block that is currently in the buffer. … Causes SQL*Plus to execute the statement in the buffer. The buffer is not changed by this command, and / can be used repeatedly to execute the same statement again and again.
How do you do a double colon in SQL?
In MS SQL Server 2000: For built-in user-defined functions that return a table, the function name must be specified with a leading double colon (::) to distinguish it from user-defined functions that are not built-in. It also must be specified as a one-part name with no database or owner qualifications.
Do you need semicolons in PostgreSQL?
Semicolons are often optional at the end of a single statement. But if you are going to execute a script with more than one statement, they need to be terminated by a semicolon.
What is Oracle colon?
Host variables can be used anywhere a SQL expression can be used. In SQL statements, host variables must be prefixed with a colon (:) to set them apart from Oracle objects. … An indicator variable is a short integer variable that “indicates” the value or condition of its host variable.