Validating null in pl sql

13-Dec-2019 22:16

In the following example, I use a GOTO statement to quickly move to the end of my program if the state of my data indicates that no further processing is required: PROCEDURE process_data (data_in IN orders%ROWTYPE, data_action IN VARCHAR2) IS status INTEGER; BEGIN -- First in series of validations.IF data_in.ship_date IS NOT NULL THEN status := validate_shipdate (data_in.ship_date); IF status !If, on the other hand, you include an explicit ELSE clause that does nothing, you state very clearly, “Don’t worry, I thought about this possibility and I really want nothing to happen:”My example here was of an IF statement, but the same principle applies when writing CASE statements and CASE expressions.Similarly, if you want to temporarily remove all the code from a function or procedure, and yet still invoke that function or procedure, you can use NULL as a placeholder.

If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this field. Note: It is very important to understand that a NULL value is different from a zero value or a field that contains spaces.August 2001 With the advent of XML Schema, there is the requirement to validate XML documents against their associated schemas.This article gives an introduction to the XML schema validation process with the XDK for Java and discusses how to build an Oracle Java Stored Procedure to perform the schema validation on the server-side of the Oracle Database.Using the SQL statement, you can also call them from the top level (from SQL*Plus, for example) and from database triggers.The following example shows how to do XML Schema Validation using the created Java stored procedure.

If a field in a table is optional, it is possible to insert a new record or update a record without adding a value to this field. Note: It is very important to understand that a NULL value is different from a zero value or a field that contains spaces.

August 2001 With the advent of XML Schema, there is the requirement to validate XML documents against their associated schemas.

This article gives an introduction to the XML schema validation process with the XDK for Java and discusses how to build an Oracle Java Stored Procedure to perform the schema validation on the server-side of the Oracle Database.

Using the SQL statement, you can also call them from the top level (from SQL*Plus, for example) and from database triggers.

The following example shows how to do XML Schema Validation using the created Java stored procedure.

= 0 THEN GOTO end_of_procedure; END IF; END IF; -- Second in series of validations.