General MySQL Oracle SQL Server

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Run Stored Procedures in Debug Mode in Oracle
How To Run Stored Procedures in Debug Mode in Oracle? If have an existing stored procedure and you want to debug it interactively, you can use the debug feature provided in SQL Developer. The following exercise shows you how to start the debug mode: Open you connection name, like Local_XE. Open Proc... 2019-01-12, 3687🔥, 0💬

Create a Table in a Given Tablespace in Oracle
How To Create a Table in a Specific Tablespace in Oracle? After you have created a new tablespace, you can give it to your users for them to create tables in the new tablespace. To create a table in a specific tablespace, you need to use the TABLESPACE clause in the CREATE TABLE statement. Here is a... 2019-01-08, 3782🔥, 1💬

💬 2019-01-08 Bvm: Help :)

Keep Data Files When Tablespace Dropped in Oracle
What Happens to Data Files If a Tablespace Is Dropped in Oracle? If a tablespace is dropped, what happens to its data files? By default, data files will remain in OS file system, even if the tablespace they are mapped is dropped. Of course, you delete the data files using OS commands, if they are no... 2019-01-01, 3618🔥, 0💬

Show Free Space in a Tablespace in Oracle
How To See Free Space of Each Tablespace in Oracle? One of the important DBA tasks is to watch the storage usage of all the tablespaces to make sure there are enough free space in each tablespace for database applications to function properly. Free space information can be monitored through the USER... 2019-01-01, 2463🔥, 0💬

Bring a Tablespace Online in Oracle
How To Bring a Tablespace Online in Oracle? If you have brought a tablespace offline, now you want to make it available to users again, you can use the ALTER TABLESPACE ... ONLINE statement as shown in the following script: SQL&gt; connect HR/fyicenter SQL&gt; CREATE TABLESPACE my_space 2 DA... 2019-01-01, 2449🔥, 0💬

Bring a Tablespace Offline in Oracle
How To Bring a Tablespace Offline in Oracle? If you want to stop users using a tablespace, you can bring it offline using the ALTER TABLESPACE ... OFFLINE statement as shown in the following script: SQL&gt; connect HR/fyicenter Connected. SQL&gt; CREATE TABLESPACE my_space 2 DATAFILE '/temp/... 2019-01-01, 2444🔥, 0💬

PL/SQL Language Case Insensitive in Oracle
Is PL/SQL Language Case Sensitive in Oracle? PL/SQL language is not case sensitive: Reserved words are not case sensitive. For example: CASE and Case are identical. Variable names and other names are not case sensitive. For example: TOTAL_SALARY and total_salary are identical. But values in string l... 2018-12-26, 4991🔥, 0💬

Set Up Breakpoints in Debug Mode in Oracle
How To Set Up Breakpoints in Debug Mode in Oracle? To debug a stored procedure, you need to set breakpoints at different statements in the code block, so that execution will be stopped at the statement marked with a breakpoint. When execution is stopped, you can then investigate different variables ... 2018-12-26, 2828🔥, 0💬

Enter Comments in PL/SQL in Oracle
How To Enter Comments in PL/SQL in Oracle? There are two ways to enter comments into PL/SQL codes: SQL Statement Style: Starts you comment any where in the line but prefixed with '--'. The comment ends at the end of the line. C Language Style: Starts you comment any where in the line with '/*' and e... 2018-12-26, 2592🔥, 0💬

Understanding PL/SQL Language Basics
Where to find answers to frequently asked questions on Understanding PL/SQL Language Basics? Here is a list of frequently asked questions and their answers compiled by FYIcenter.com DBA team on Understanding PL/SQL Language Basics. It can also be used as learning tutorials on defining variables, ass... 2018-12-26, 2525🔥, 0💬

What Do You Think about Oracle SQL Developer in Oracle
What Do You Think about Oracle SQL Developer in Oracle? To conclude this introductory FAQ collection, you should think about Oracle SQL Developer in comparison with other client tools like SQL*Plus and Oracle Web interface. SQL Developer is definitely better than the other tools, more functionality,... 2018-12-26, 2287🔥, 0💬

PL/SQL Anonymous Block in Oracle
What Is an Anonymous Block in Oracle? An anonymous block is a PL/SQL code block with no name. It consists of three parts: Declaration Part - Defining local variables and local procedures. Declaration part is optional. Execution Part - Defining execution logic with executable statements. Execution pa... 2018-11-29, 2431🔥, 0💬

PL/SQL Named Program Unit in Oracle
What Is a Named Program Unit in Oracle? A named program unit is a PL/SQL code block with an name. It consists of three parts: Declaration Part - Defining the program unit name, calling parameters, local variables and local procedures. Declaration part is required. Execution Part - Defining execution... 2018-11-29, 2429🔥, 0💬

PL/SQL Functions in Oracle
What Is a Function in Oracle? A function is a named program unit. It consists of three parts: Declaration Part - Defining the function name, calling parameters, return value type, local variables and local procedures. Declaration part is required. Execution Part - Defining execution logic with execu... 2018-11-29, 2396🔥, 0💬

Different Types of PL/SQL Code Blocks in Oracle
What Are the Different Types of PL/SQL Code Blocks in Oracle? There are 3 types of PL/SQL code blocks: Anonymous Block - A block of codes with no name. It may contain a declaration part, an execution part, and exception handlers. Stored Program Unit - A block of codes with a name. It is similar to a... 2018-11-29, 2363🔥, 0💬

PL/SQL Procedure in Oracle
What Is a Procedure in Oracle? A procedure is a named program unit. It consists of three parts: Declaration Part - Defining the procedure name, calling parameters, local variables and local procedures. Declaration part is required. Execution Part - Defining execution logic with executable statements... 2018-11-29, 2302🔥, 0💬

Declare Local Variables in Oracle
How To Declare a Local Variable in Oracle? A local variable can be defined in the declaration part with a declaration statement, which is a variable name followed a data type identifier. Below are some examples of declaration statements: PROCEDURE proc_var_1 AS domain VARCHAR2(80); price REAL; is_fo... 2018-11-17, 2612🔥, 0💬

Scalar Data Types Supported in PL/SQL in Oracle
How Many Scalar Data Types Are Supported in PL/SQL in Oracle? PL/SQL supports many scalar data types divided into 4 groups: Numeric Types: BINARY_DOUBLE, BINARY_FLOAT, BINARY_INTEGER, DEC, DECIMAL, DOUBLE PRECISION, FLOAT, INT, INTEGER, NATURAL, NATURALN, NUMBER, NUMERIC, PLS_INTEGER, POSITIVE, POSI... 2018-11-17, 2527🔥, 0💬

Categories of Data Types in PL/SQL in Oracle
How Many Categories of Data Types in Oracle? PL/SQL data types are grouped into 4 categories: Scalar Data Types: A scalar data type holds a single value. Composite Data Types: A composite data type has internal components, such as the elements of an array. LOB Data Types: A LOB data type holds a lob... 2018-11-17, 2411🔥, 0💬

Convert Character Types to Numeric Types in Oracle
How To Convert Character Types to Numeric Types in Oracle? You can convert character types to numeric types in two ways: Explicitly by using TO_NUMBER() function. Implicitly by putting character data in a numeric operation. The sample script below shows you how to convert character types to numeric ... 2018-11-17, 2296🔥, 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, 2068🔥, 0💬

Drop a Stored Procedure in Oracle
How To Drop a Stored Procedure in Oracle? If there is an existing stored procedure and you don't want it any more, you can remove it from the database by using the DROP PROCEDURE statement as shown in the following script example: SQL&gt; CREATE PROCEDURE Greeting AS 2 BEGIN 3 DBMS_OUTPUT.PUT_LI... 2018-11-11, 4252🔥, 0💬

Create a Stored Function in Oracle
How To Create a Stored Function in Oracle? A stored function is a function with a specified name and stored into the current database. If you want to create a stored function, you can use the CREATE FUNCTION statement. The example script below creates a stored procedure: SQL&gt; CREATE OR REPLAC... 2018-11-11, 3033🔥, 0💬

Create a Stored Procedure in Oracle
How To Create a Stored Procedure in Oracle? A stored procedure is a procedure with a specified name and stored into the current database. If you want to create a stored procedure, you can use the CREATE PROCEDURE statement. The example script below creates a stored procedure: SQL&gt; CREATE PROC... 2018-11-11, 2733🔥, 0💬

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General MySQL Oracle SQL Server