General MySQL Oracle SQL Server

<< < … 15 16 17 18 19 20   ∑:464  Sort:Date

How Data Locks Are Respected in Oracle
How Data Locks Are Respected in Oracle? Here are the rules on how data locks are respected: All statements ignore data locks owned its own transaction. SELECT query statements ignores data locks owned by any transactions. INSERT, UPDATE, and DELETE statements in a READ COMMITTED transaction will wai... 2019-08-08, 2101🔥, 0💬

Define Variables before Procedures and Functions in Oracle
What Is the Order of Defining Local Variables and Sub Procedures/Functions in Oracle? In the declaration part, you must define all local variables before defining any sub procedures or sub functions. See the following sample script: SQL&gt; CREATE OR REPLACE PROCEDURE WELCOME AS 2 SITE CHAR(80) ... 2018-03-18, 2099🔥, 0💬

Retrieve Field Values from RECORD Variables in Oracle
How To Retrieve Values from Data Fields in RECORD Variables in Oracle? If a variable is a RECORD variable with data fields assigned values, you can retrieve those values out of its data fields by using fields names prefixed with variable name as "variable.field_name". Here is a sample script showing... 2018-09-01, 2097🔥, 0💬

Types of Execution Flow Control Statements in Oracle
What Are the Execution Control Statements in Oracle? PL/SQL supports three groups of execution control statements: IF Statements - Conditionally executes a block of statements. CASE Statements - Selectively executes a block of statements. LOOP Statements - Repeatedly executes a block of statements. ... 2018-11-17, 2084🔥, 0💬

Assign Data from a Deleted Row to Variables in Oracle
How To Assign Data of the Deleted Row to Variables in Oracle? If a DELETE statement is deleting a single row, you can assign column values of the deleted row to variables by using the RETURNING clause, which an extension of DELETE statements for PL/SQL. The tutorial script shows you how to do this: ... 2018-09-13, 2083🔥, 0💬

Use "WHILE" Loop Statements in Oracle
How To Use "WHILE" Loop Statements in Oracle? If you have a block of codes to be executed repeatedly based a condition, you can use the "WHILE ... LOOP" statement. Here is a sample script on WHILE statements: DECLARE total NUMBER; BEGIN total := 0; WHILE total &lt; 10 LOOP total := total+1; END ... 2018-07-13, 2061🔥, 0💬

Update Values in a Table in Oracle
How To Update Values in a Table in Oracle? If you want to update some values in one row or multiple rows in a table, you can use the UPDATE statement. The script below shows a good example: UPDATE fyi_links SET counts = 999, notes = 'Good site.' WHERE id = 101; 1 row updated. SELECT * FROM fyi_links... 2020-01-21, 2039🔥, 0💬

Assign Field Values into RECORD Variables in Oracle
How To Assign Values to Data Fields in RECORD Variables in Oracle? If a variable is a RECORD variable, you can assign values to its data fields by using fields names prefixed with variable name as "variable.field_name". Here is a sample script assigning values to data fields of RECORD variables: CRE... 2018-09-01, 1995🔥, 0💬

<< < … 15 16 17 18 19 20   ∑:464  Sort:Date

General MySQL Oracle SQL Server