postgresql cursor fetch loop example

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-- Drop function top100cur (refcursor); Create Function top100cur (refcursor) returns refcursor as $ beginopen $1 for select * From person limit 100; return $1; end $ language plpgsql; ---------- test cursor ----------- select top100cur ('abc'); --

MySQL stored procedures can easily return multiple result sets at a time, but POSTGRESQL currently does not provide such a function. A literal translation method is to use a cursor, but you can also put the result set in an array or a large

There is several ways to determine the effect of a command. The first method is for use the GETDiagnostics command, which has the form:GET [Current] diagnostics Variable {= |: =} Item [, ...];This command allows retrieval of system status indicators.

The original developer of a new PHP data object (PDO) Data abstraction Layer gives you a brief introduction to the abstraction layer, highlighting how it works with Oracle. Need php:5.0Other Required: Oracle 8 or later client librariesDownload PDO

The original developer at the data abstraction layer of a new PHP Data Object (PDO) briefly introduces this abstraction layer, focusing on running with Oracle. PHP: 5.0 requiredOther required: Oracle 8 or later client libraryDownload PDO for Oracle (

The original developer of a new PHP data object (PDO) Data abstraction Layer gives you a brief introduction to the abstraction layer, focusing on running with Oracle. Need php:5.0Need other: Oracle 8 or later client libraryDownload PDO for Oracle

Oracle| Object | data The original developer of a new PHP data object (PDO) Data abstraction Layer gives you a brief introduction to the abstraction layer, focusing on running with Oracle. Need php:5.0Need other: Oracle 8 or later client

Recently in the processing DB2, the query, found the following problems. If a query is count (*), there are hundreds of thousands of rows, how pagination is implementedSelect Row_number () over (order by FID desc ) as Row_number, Other_fieldFrom

Summary of database programming There are a number of current mainstream databases, including Oracle, MS SQL Server, Sybase, Informix, MySQL, DB2, Interbase/firebird, PostgreSQL, SQLite, sap/db, time STen, MS access, and so on. Database programming