sql in nutshell 2001
sql in nutshell 2001
... Basic object support • Overloading SQL- invoked functions and procedures • User-defined types with single inheritance; basic SQL routines on user-defined types (including dynamic dispatch) • Reference ... database products, such as MySQL, miniSQL, and PostgreSQL, grow in popularity and are developed by virtual teams rather than large corporations. SQL in a Nutshell explains the SQ...
Ngày tải lên: 10/04/2014, 09:40
Teach yourself SQL in 21 days
... join two tables without the use of a WHERE clause, you are Teach Yourself SQL in 21 Days, Second Edition - Day 1 - Introduction to SQL A Brief History of SQL The history of SQL begins in ... Joins Just as the non-equi-join balances the equi-join, an outer join complements the inner join. An inner join is where the rows of the tables are combined with each other, producing a...
Ngày tải lên: 06/08/2013, 17:39
Teach Yourself PL/SQL in 21 Days- P16
... creating, 54 creating (security exam- ple), 538-539 data integrity (maintain- ing), 300-304 listing, 302 defining, 299-300, 313, 319 delete, 296 enabling/disabling, 310-311 event, 311-312 defining, ... 190 dropping, 197 invoking, 194, 199 listing information, 195 recompiling, 193-194 storing objects as columns, 345-347 retrieving/updating, 347-349 object tables, 349, 351-356 creating, 350 ins...
Ngày tải lên: 20/10/2013, 17:15
Teach Yourself PL/SQL in 21 Days- P1
... for Defining a Database Trigger 298 Uses for Triggers 300 Maintaining Data Integrity 300 Maintaining History 304 Managing Triggers 307 Listing Triggers 308 Viewing Trigger Code 309 Enabling and ... Edition Preventing Errors and Planning for Debugging in the Future 391 Defining Requirements and Planning Projects 391 Using a Modular Approach to Coding 392 Commenting Code 392 Writing Assertion...
Ngày tải lên: 07/11/2013, 20:15
Teach Yourself PL/SQL in 21 Days- P2
... watermark. Writing Declarations and Blocks 41 2 BINARY_INTEGER The BINARY_INTEGER datatype is used for declaring signed integer variables. Compared to the NUMBER datatype, BINARY_INTEGER variables ... BINARY_INTEGER Datatype variable_name BINARY_INTEGER; In this syntax, variable_name is whatever you want to name the variable. Here is a sample declaration: my_integer BINARY_INTEGER; A BINA...
Ngày tải lên: 07/11/2013, 20:15
Teach Yourself PL/SQL in 21 Days- P3
... Concatenation Operator string_1 || string_2 In this syntax, string_1 and string_2 are both character strings and can be either string constants, string variables, or a string expression. The concatenation ... When I am comparing strings, especially when comparing a CHAR string to a VARCHAR2 string, is there a convenient way to tell PL /SQL to ignore any trail- ing spaces in the CHAR st...
Ngày tải lên: 07/11/2013, 20:15
Tài liệu Teach Yourself PL/SQL in 21 Days- P4 pptx
... spacing should include aligning the END LOOP with the LOOP statement and the usual indent of five spaces for statements within the loop. Listing 5.21 contains an exam- ple in which the spacing ... must be within the same scope as the GOTO statement itself. Conditions that cause Oracle to not compile the PL /SQL code include •Jumping into a subblock •Jumping into a loop •Jumping into an...
Ngày tải lên: 15/12/2013, 05:15
Tài liệu Teach Yourself PL/SQL in 21 Days- P5 doc
... ON command at the SQL* Plus prompt. The code in Listing 7.2 illustrates the PUT_LINE command line that you can include inside a procedure. L ISTING 7.2 The PUT_LINE Command Within a Procedure CREATE ... must be able to terminate itself at some pre- defined point, or the recursion would last forever. This point of termination is defined in a terminating condition. The following code exa...
Ngày tải lên: 15/12/2013, 05:15
Tài liệu Teach Yourself PL/SQL in 21 Days- P6 docx
... pay_type 1 Jessica Loraine 2Kurt Roberts Inserting Some Data You will now insert data into the employee table for use in the remainder of the book. Type in the PL /SQL block shown in Listing 8.4, and then ... containing any of the following: OPEN stock_listing_cur (stock_listing.name, ‘ABCDEFG’); OPEN stock)listing_cur (stock_listing_name, stock_listing_price); Fetching Data in a Cu...
Ngày tải lên: 15/12/2013, 05:15
Tài liệu Teach Yourself PL/SQL in 21 Days- P7 ppt
... imagina- tion. Some common uses are • Enforcing business rules • Maintaining referential integrity • Enforcing security • Maintaining a historical log of changes • Generating column values, including ... FERMENTATION 405 GUTTING 404 SCALE PROCESSING 502 Technical Writing 406 UNLOADING 403 BOTTLING 403 BOTTLING 403 BOTTLING 403 BOTTLING 403 BOTTLING Line 8 declares the type for the nested tabl...
Ngày tải lên: 15/12/2013, 05:15