SQL PROGRAMMING STYLE- P23 pot
SQL PROGRAMMING STYLE- P23 pot
... standards.
Standard SQL defines a minimal set of simple temporal math
operators. All of them are available in all SQL products, but the syntax
varies. For example, in the T -SQL dialect, the function ...
architecture. This is a basic programming principle and has nothing to
do with SQL per se. Failure to follow this principle is usually the result
of a newbie who came to SQL f...
SQL PROGRAMMING STYLE- P2 potx
... tables, 63
SQL
4GLs, 151, 152
bad programming in, 184–89
as declarative language, 193
Dynamic, 168–70
injection, 169–70
Standard, 4, 5, 6, 7, 118
testing, 130–31
thinking in, 183–95
SQL- 92
CASE ... 3
quoted identifiers, 5
string operators, 108
SQL- 99, 3
Stamp coupling, 156
Standard functions, 108
Standard Industrial Classification
(SIC), 14
Standard SQL
case-sensitivity rules, 6, 7...
SQL PROGRAMMING STYLE- P8 potx
... procedural programming! SQL will not make
up for a lack of programming skills. In fact, the bad effects of mimicking
3GL languages in SQL are magnified. The optimizers and compilers in
SQL engines ... reasoning.
10.1 Bad Programming in SQL and Procedural Languages
As an example of not learning any relational approaches to a problem,
consider a posting in the comp.databases...
SQL PROGRAMMING STYLE- P10 potx
... almost write itself.
9.2 Add the Words “Set of All…” in Front of the Nouns
The big leap in SQL programming is thinking in sets and not in process
steps that handle one unit of data at a time. ...
still get multiple couples on the dance floor. This is where some
experience with SQL helps. One of the customary programming tricks is
to use a self-join to get a ranking of elements...
SQL PROGRAMMING STYLE- P15 pot
... but rather as a tool for doing
short tasks inside a SQL Server database.
At the other extreme, Oracle’s PL /SQL is modeled after ADA and
SQL/ PSM. It is a complicated language that can be used ... tables
and columns, combining tables, and splitting tables.
In general, if you follow good SQL/ SQL programming practices, you
will usually not encounter situations where the usage of VIEW...
SQL PROGRAMMING STYLE- P18 pot
... them has seen!
VIEWs are virtual tables, defined by SELECT statements stored in the
database. The SQL statement that defines the VIEW is executed only
when the VIEW is invoked in another statement.
SQL PROGRAMMING STYLE- P25 pot
... help with this concept from the X/Open
SQL Portability Guides.
A major problem in becoming a SQL programmer is that people do
not unlearn procedural or OO programming they had to learn for
their ... language.
Another problem in becoming a SQL programmer is that people tend
to become SQL dialect programmers and think that their particular
product’s SQL is some kind of standard....
SQL PROGRAMMING STYLE- P28 potx
... at the time.
Before you say that the NULL in SQL is a quick solution to this
problem, think about how NULL is ignored in many SQL functions. The
SQL query “SELECT tag_nbr, SUM(fine) FROM tickets ... allow for the change from
the old ZIP codes to the current ZIP+4 codes in their address data. SQL
does not have this as a physical problem, but it can show up as a logical
problem.
Ano...
SQL PROGRAMMING STYLE- P34 pot
... in a way that
avoided redundant data in too many files and not have it depend on a
particular programming language.
A file is made up of records, and records are made up of fields. A file
is ... to
read a FORTRAN file with a COBOL program? A database is language
independent; the internal SQL data types are converted into host
language data types.
A field exists only because of the ....
sql programming style - apr 2005
... programmers.
My goals in this book are to improve SQL programming style and
proficiency. To be more exact:
1.
To help an individual programmer write Standard SQL without an
accent or a dialect
. ... other SQLs, cannot be easily understood by an end user,
and cannot be expanded.
In the second case, what some newbies, who are still thinking in
terms of second- and third-generati...
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