2015年1月26日 · PL/SQL. PL/SQL is a combination of SQL along with the procedural features of programming languages. It was developed by Oracle Corporation. Specialities of PL/SQL. completely portable, high-performance transaction-processing language. provides a built-in interpreted and OS independent programming environment.

2012年11月6日 · PL/SQL is Turing complete language, with syntax for building complicated programmes. It also has a large number of libraries which give it a great range of capabilties. However, undoubtedly its main use is building stored procedures which embed SQL statements for retrieving and working with data. So to that extent PL/SQL is a superset of SQL.

T-SQL and PL/SQL are two completely different programming languages with different syntax, type system, variable declarations, built-in functions and procedures, and programming capabilities. The only thing they have in common is direct embedding of SQL statements, and storage and execution inside a database.

PL/SQL is a vendor extension to the SQL standard*. *SQL is a language that has an explicit grammar and rules for how that grammar should be implemented, and is but is not a standard per-se . However, since there is a language specification, that everyone can agree on, then anything written in SQL would be portable if the program was only ...

Where a view is not suitable, use an SQL function; Where an SQL function isn't suitable, use PL/PgSQL. Where PL/PgSQL is too limited or not expressive enough, use PL/Perl, PL/Python, PL/V8, PL/Java, or whatever your preference is... and where no PL will do the job, use an external program and possibly LISTEN and NOTIFY to talk to it.

2018年6月14日 · SQL/PSM is the part of the standard that defines the stored procedure language, so SQL/PSM would be applicable to PL/pgSQL, but not to SQL. However, PL/pgSQL does not follow the SQL/PSM standard. Nobody tells you that you have to use PL/pgSQL, and indeed it makes your application more portable (on the database end) not to use it.

2012年5月18日 · @Dems: in Oracle, boolean is not a first-class type in SQL (which is different from PL/SQL). I. e. you can't SELECT 1 = 1 FROM dual like in some other systems. So booleans have their own set of operators valid only in logical contexts (WHERE or HAVING or similar clauses). NOT is the only boolean negation operator in Oracle's SQL (AFAIK). –

2014年5月14日 · T-SQL is Microsoft's version of SQL. PL/SQL is Oracle's version of SQL. Both are ANSI SQL compliant, but contain additional capabilities that are not in the standard. A Stored Procedure is a prepared SQL statement that is stored on …

Overview of PL/SQL Subprograms A PL/SQL subprogram is a named PL/SQL block that can be invoked with a set of parameters. A subprogram can be either a procedure or a function. Typically, you use a procedure to perform an action and a function to compute and return a value.

2009年4月21日 · Procedure is named PL/SQL block which performs one or more tasks. where function is named PL/SQL block which performs a specific action. Procedure may or may not return value where as function should return one value. we can call functions in select statement where as procedure we cant.