If you are looking for the answer of how to use when in sql, you’ve got the right page. We have approximately 10 FAQ regarding how to use when in sql. Read it below.
how to create a database using microsoft SQL?
Ask: how to create a database using microsoft SQL?
Answer:
Explanation:
Open Microsoft SQL Management Studio.
Connect to the database engine using database administrator credentials.
Expand the server node.
Right click Databases and select New Database.
Enter a database name and click on OK to create the database.
1. How does tuning in PL/SQL work?2. What is the
Ask: 1. How does tuning in PL/SQL work?
2. What is the importance of tuning in PL/SQL?
paki answer po pls.
Answer:
1.When to Tune PL/SQL Code
The information in this chapter is especially valuable if you are responsible for:
Programs that do a lot of mathematical calculations. You will want to investigate the datatypes PLS_INTEGER, BINARY_FLOAT, and BINARY_DOUBLE.
Functions that are called from PL/SQL queries, where the functions might be executed millions of times. You will want to look at all performance features to make the function as efficient as possible, and perhaps a function-based index to precompute the results for each row and save on query time.
Programs that spend a lot of time processing INSERT, UPDATE, or DELETE statements, or looping through query results. You will want to investigate the FORALL statement for issuing DML, and the BULK COLLECT INTO and RETURNING BULK COLLECT INTO clauses for queries.
Older code that does not take advantage of recent PL/SQL language features. (With the many performance improvements in Oracle Database 10g, any code from earlier releases is a candidate for tuning.)
Any program that spends a lot of time doing PL/SQL processing, as opposed to issuing DDL statements like CREATE TABLE that are just passed directly to SQL. You will want to investigate native compilation. Because many built-in database features use PL/SQL, you can apply this tuning feature to an entire database to improve performance in many areas, not just your own code.
Before starting any tuning effort, benchmark the current system and measure how long particular subprograms take. PL/SQL in Oracle Database 10g includes many automatic optimizations, so you might see performance improvements without doing any tuning.
2.How PL/SQL Optimizes Your Programs
In releases prior to 10g, the PL/SQL compiler translated your code to machine code without applying many changes for performance. Now, PL/SQL uses an optimizing compiler that can rearrange code for better performance.
You do not need to do anything to get the benefits of this new optimizer. It is enabled by default. In rare cases, if the overhead of the optimizer makes compilation of very large applications take too long, you might lower the optimization by setting the initialization parameter PLSQL_OPTIMIZE_LEVEL=1 instead of its default value 2. In even rarer cases, you might see a change in exception behavior, either an exception that is not raised at all, or one that is raised earlier than expected. Setting PL_SQL_OPTIMIZE_LEVEL=0 prevents the code from being rearranged at all.
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How does SQL affect the success of a business?
Ask: How does SQL affect the success of a business?
Answer:
______________________________________________________________________________________
Explanation:
A blind sql injection attack is used when which of
Ask: A blind sql injection attack is used when which of the following is true
Step-by-step explanation:
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what is the significance of knowing how sql injection works
Ask: what is the significance of knowing how sql injection works
SQL injection is a web security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. It generally allows an attacker to view data that they are not normally able to retrieve.
Answer:
SQL injection is a web security vulnerability that allows an attacker to interfere with the queries that an application makes to its database. It generally allows an attacker to view data that they are not normally able to retrieve.
how i create table courses in sql
Ask: how i create table courses in sql
Answer:
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how does data works in SQL manner?
Ask: how does data works in SQL manner?
Answer:
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Write a short essay that explains how general data types
Ask: Write a short essay that explains how general data types used in sql work
Answer:
In SQL Server, a data type defines the type of data in a table column or variable. It is a mandatory and essential step in designing a table. A table with inappropriate data types can lead to various issues such as improper query optimization, performance issues, data truncation.
Explanation:
Exact numeric: bit, tinyint, smallint, int, bigint, decimal, numeric, money and smallmoney
Approximate numeric: Read and float
Date and time: date, DateTime, datetime2, datetimeoffset, smalldatetime, time
Character strings:char, varchar, text
Unicode character strings: Nchar, Nvarchar, Ntext
Binary strings: Binary, image and varbinary
Other data types: Cursor, hierarchyid, sql_variant, table, rowversion, uniqueidentifier, XML, Spatial and geography
who uses SQL as their DBMS platform in collecting data
Ask: who uses SQL as their DBMS platform in collecting data
who uses SQL as their DBMS platform in collecting data
Answer:tao po
Some common relational database management systems that use SQL are: Oracle, Sybase, Microsoft SQL Server, Access, Ingres, etc. Although most database systems use SQL, most of them also have their own additional proprietary extensions that are usually only used on their system.
Explanation:
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Which statement is used to limit data in sql server?
Ask: Which statement is used to limit data in sql server?
Answer:
SQL SELECT LIMIT
The SQL SELECT LIMIT statement is used to retrieve records from one or more tables in a database and limit the number of records returned based on a limit value. TIP: SELECT LIMIT is not supported in all SQL databases. For databases such as SQL Server or MSAccess, use the SELECT TOP statement to limit your results.
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