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Built-In FunctionsThe PL/SQL provides a lot of powerful functions to help you to manipulate the data. These built-in functions fall into the categories as shown below:error reportingnumbercharacterdatatype conversiondateobject referencemiscellaneousThe table shows the functions in each and every category. You can use all the functions in the SQL statements except the error-reporting functions SQLCODE and SQLERRM. You can also use all the functions in the procedural statements except the miscellaneous functions like DECODE, DUMP, & VSIZE.The SQL aggregate functions such as AVG, GROUPING, COUNT, STDDEV, MIN, MAX, SUM, and VARIANCE are not built into PL/SQL. However, you can use them in the SQL statements (but not in the procedural statements).
Table: Built-in Functions
Using a Host Variable You can declare the cursor variable in the PL/SQL host environment like an OCI or Pro C program. To use the cursor variable, you should pass it as a host
Tautology - Equivalences Rules: If there Tautologies are not all the time as much easy to note as the one above so than we can use these truth tables to be definite that a sta
Example of Foreign Key Constraint Example: Alternative formulation for 6.3 as a foreign key constraint ALTER TABLE EXAM_MARK ADD CONSTRAINT Must_be_enrolled_to_take_exam
Avoiding Collection Exceptions In many cases, if you reference a nonexistent collection element, then PL/SQL raises a predefined exception. Consider the illustration shown b
This task involves developing some functions that extract data from an SQL database. The scenario is that a company which owns an online vehicle search website wants to generate so
Inserting Objects: You can use the INSERT statement to add objects to an object table. In the illustration below, you insert a Person object into the object table persons:
Methods: In normal, a method is a subprogram declared in an object type specification using the keyword MEMBER or STATIC. The method cannot have similar name as the object typ
UTL_FILE: The Package UTL_FILE permits your PL/SQL programs to read & write operating system (OS) text files. It gives a restricted version of the standard OS stream file I/O,
Manipulating Objects: You can use an object type in the CREATE TABLE statement to indicate the datatype of a column. When the table is created once, you can use the SQL statem
Hi,am developing a library system and relating all the table is somehow complex,could you kindly assist me
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