teach yourself pl sql in 24 hours

Teach Yourself PL/SQL in 21 Days- P16

... creating, 54creating (security exam-ple), 538-539data integrity (maintain-ing), 300-304listing, 302defining, 299-300, 313,319delete, 296enabling/disabling,310-311event, 311-312defining, ... 254debugging, 136FOR, 121-122, 146common errors, 124 EXIT statement, 140listing, 121nesting, 121guidelines, 147incrementing through,123- 124 listing, 123infinite, 144, 380jumping into (GOTO), ... (dbms output.putline() procedure), 17processing benefits, 9platform independence (PL/ SQL benefits), 9Platinum Technology Inc.Web site, 11PLS_INTEGER datatype,43syntax, 44plus sign (+)addition...

Teach Yourself ILLUSTRATOR 7 in 24 hours

Danh mục: Thiết kế - Đồ họa - Flash

... referring to the blending of colors into each other.* Anchor point The heart of a Bézier curve. More on this in Hour 6, "Drawing Bézier Paths."* Line screen Printing term referring ... sections: Plug-ins Folder and Scratch Disks.Plug-ins FolderThe Plug-ins folder is where Illustrator keeps all of its "extensions" or add-ons, including third-party filters and plug-ins. ... leading is added or removed from aline of type when using the leading keyboard shortcut (Option-up arrow and Option-downarrow).Baseline Shift specifies the increment when using the Baseline...

Teach Yourself PL/SQL in 21 Days- P1

Danh mục: Cơ sở dữ liệu

... PL/ SQL stored subprograms and SQL queries.FIGURE1.1Relationship of SQL* Plus, PL/ SQL, and Oracle.Oracle Database Server SQL StatementExecutor SQL* Plus PL/ SQL Engine SQL QueriesYour PC In ... Compatibility 574Using the OUTand IN OUTArguments 575Calling PL/ SQL from Java Using SQLJ 578Using SQLJ to Execute an Anonymous PL/ SQL Block 578Using SQLJ to Call a PL/ SQL Procedure or Function ... by SQL* Plus. All the listings also haveline numbers so that the analysis following each listing can easily refer to specific linesof code. When you type PL/ SQL blocks into SQL* Plus, SQL* Plus...

Teach Yourself PL/SQL in 21 Days- P2

Danh mục: Cơ sở dữ liệu

... three-day weekend. Thetest in line 16 also includes Saturday and Sunday because many employers still giveemployees a day off, resulting in a three-day weekend. Line 24 uses PL/ SQL sADD_MONTHSfunction ... block begins at line 3 and ends on line 31. Anested anonymous block begins on line 14 and ends on line 21. Lines 6 through 9 definethename_printprocedure.The variable a_nameis declared in the ... longerstrings in PL/ SQL, but 4000 is the limit (2000 if you are using any release ofOracle7) if you want to store the string in the database.NoteReferring to the example declaration of employee_name,...

Teach Yourself PL/SQL in 21 Days- P3

Danh mục: Cơ sở dữ liệu

... When I am comparing strings, especially when comparing a CHARstring to aVARCHAR2string, is there a convenient way to tell PL/ SQL to ignore any trail-ing spaces in the CHARstring?A Yes. Use ... 4.15. LISTING4.15NestingFORLoopsBEGINFOR v_outerloopcounter IN 1 2 LOOPFOR v_innerloopcounter IN 1 4 LOOPDBMS_OUTPUT.PUT_LINE(‘Outer Loop counter is ‘ ||v_outerloopcounter ||‘ Inner Loop ... longer string and then does the comparison. Trailing spaces alonewill not result in any differences being found between two springs. Oracle also does thesame thing when comparing two string constants....

Tài liệu Teach Yourself PL/SQL in 21 Days- P4 pptx

Danh mục: Cơ sở dữ liệu

... about using this example as a PL/ SQL procedure and returning to the good old daysof BC? Listing 6.9 shows another example of using TO_CHARwith converting and format-ting dates. LISTING6.9ConvertingDATEto ... Jumping into a Lower-Level BlockYou can’t jump from an outer block of PL/ SQL code back to an inner block of PL/ SQL code. Listing 5.1 is an example of an illegal GOTOcall.The following listing, ... must be within the same scope as theGOTOstatement itself. Conditions that cause Oracle to not compile the PL/ SQL codeincludeãJumping into a subblockãJumping into a loopãJumping into an IFstatementãUsingGOTOto...

Tài liệu Teach Yourself PL/SQL in 21 Days- P5 doc

Danh mục: Cơ sở dữ liệu

... the SQL* Plus prompt. The code in Listing 7.2 illustrates the PUT_LINEcommand line that you can includeinside a procedure.LISTING7.2ThePUT_LINECommand Within a ProcedureCREATE OR REPLACE ... DAY8WEEK2Using SQL by Tom LuersBy definition, PL/ SQL is SQL s procedural language extension. PL/ SQL sup-ports all SQL s data manipulation commands (except for EXPLAIN PLAN), trans-action ... (I_emp_id IN intger);Procedure emp_change_h (I_emp_id IN integer);Function emp_rate (rate number)RETURN number;End employee_maint;The package employee_maintis first defined in the package...

Tài liệu Teach Yourself PL/SQL in 21 Days- P6 docx

Danh mục: Cơ sở dữ liệu

... 1Key: employee name emp. numberListing 8.4 shows the PL/ SQL anonymous block that you can run to insert the necessarydata.LISTING8.4Inserting Records with PL/ SQL CodeDECLARE insert department ... that are not used.Listing 10.1 shows the entire contents of the employeetable being read into an index-bytable named emp.LISTING10.1Placing Employee Records in an Index-by Table1: DECLARE2: ... 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 CursorYou get data into...

Tài liệu Teach Yourself PL/SQL in 21 Days- P7 ppt

Danh mục: Cơ sở dữ liệu

... trigger.Lines 17–19 define a record containing the primary key fields for the emp_depttable.This record in turn is used to define a PL/ SQL table type (lines 23 24) . Finally, in line27, a PL/ SQL ... central point of con-trol for maintaining the number of employees in a department, and they relieve you fromhaving to program and test this logic several places in your application. Maintaining ... imagina-tion. Some common uses areã Enforcing business rulesã Maintaining referential integrityã Enforcing securityã Maintaining a historical log of changesã Generating column values, including...

Tài liệu Teach Yourself PL/SQL in 21 Days- P8 pptx

Danh mục: Cơ sở dữ liệu

... within a SQL statement. In fact, the statement in question was executed from within SQL* Plus,although it could have been inside a PL/ SQL block. Lines 12-22 show a PL/ SQL blockthat first instantiates ... (SELF IN building,8: OtherBuilding IN building)9: RETURN INTEGER10: );11: /12: CREATE OR REPLACE TYPE BODY building AS13: MEMBER PROCEDURE ChangeMgr(SELF IN OUT building,14: NewMgr IN INTEGER) ... in Listing 12.8 in order to insert a few buildingobjects.These will be used in later examples that show how to update object tables and how tolink objects in the database.LISTING12.8Inserting...

Tài liệu Teach Yourself PL/SQL in 21 Days- P9 doc

Danh mục: Cơ sở dữ liệu

... READ(BLOB_Locator,Read_Amount IN BINARY_INTEGER,Starting_Location IN INTEGER,Buffer OUT RAW);PROCEDURE READ(CLOB_Locator CHARACTER SET Set_Desired,Read_Amount IN BINARY_INTEGER,Starting_Location IN INTEGER,Buffer ... exam-ple of the syntax for the COMPAREfunction can be seen below. FUNCTION COMPARE(Lob1 IN BLOB,Lob2 IN BLOB,Number_Bytes_to_Compare IN INTEGER,Origin_Lob1 IN INTEGER := 1,Origin_Lob2 IN INTEGER ... Compare_Result_Integer;FUNCTION COMPARE(Lob1 IN CLOB CHARACTER SET Set_Desired,Lob2 IN CLOB CHARACTER SET LOB1%CHARSET,,Number_Bytes_to_Compare IN INTEGER,Origin_Lob1 IN INTEGER := 1,Origin_Lob2 IN INTEGER...

Tài liệu Teach Yourself PL/SQL in 21 Days- P10 docx

Danh mục: Cơ sở dữ liệu

... can simply issue a PL/ SQL EXECUTE IMMEDIATEstatement.EXECUTE IMMEDIATE string[INTO {variable[, variable] | record}][USING [IN | OUT | IN OUT] bind[, [IN | OUT | IN OUT] bind] ]; In this ... nativedynamic SQL in the remaining part of this lesson.NoteExecuting DML and DDLExecuting DML and DDL statements is quite easy using native dynamic SQL. Instead ofmaking all those calls to DBMS _SQL , ... ONat the SQL* Plusprompt.LISTING16.3UsingSELECTto Verify Inserted Records1: DECLARE2: /* The purpose of this PL/ SQL block is to demonstrate3: executing queries within PL/ SQL through...

Tài liệu Teach Yourself PL/SQL in 21 Days- P11 docx

Danh mục: Cơ sở dữ liệu

... multiplying 24 hours in the day by 60 minutes/hour by 60 seconds/minute, and then taking the inverse.The next example calls a stored procedure, which passes three parameters with the valuesmaintenance,1000, ... seen in the following example. PROCEDURE SUBMIT(job_number OUT BINARY_INTEGER,job_to_submit IN VARCHAR2,next_run IN DATE DEFAULT SYSDATE,interval IN VARCHAR2 DEFAULT NULL,job_parsing IN BOOLEAN ... watermark. Generating Dynamic SQL 47916Executing PL/ SQL BlocksYou can execute PL/ SQL blocks by using native dynamic SQL through the use of theEXECUTE IMMEDIATEstatement. Listing 16.9 shows...

Tài liệu Teach Yourself PL/SQL in 21 Days- P12 doc

Danh mục: Cơ sở dữ liệu

... interface within theserver results in an exception being thrown.Will PL/ SQL Go Away?Will Java replace PL/ SQL as the preferred programming language to use within the serv-er? Will PL/ SQL die off? ... that string (line 29).You can make this method useable from PL/ SQL by publishing it with the CREATE PROCEDUREstatement shown in Listing 20.11.576 Day 20You can find this listing in the file ... ‘Employee.getSuperName(int) return java.lang.String’;6: /Function created. In line 1, the name get_super_name is the one given to the Java method in the PL/ SQL world. Line 4 begins the Java-specific...

Tài liệu Teach Yourself PL/SQL in 21 Days- P13 ppt

Danh mục: Cơ sở dữ liệu

... and both enqueuing and dequeuing are enabled.Placing Messages in a QueueAfter creating and starting a queue, you place messages in the queue by enqueuing them.Enqueuing a message involves these ... NULL,multiple_consumers IN BOOLEAN DEFAULT FALSE,message_grouping IN BINARY_INTEGER DEFAULT none,comment IN VARCHAR2 DEFAULT NULL,auto_commit IN BOOLEAN DEFAULT TRUE,primary_instance IN BINARY_INTEGER ... a SQL statement calling a published Java method, which then calls a PL/ SQL function,which in turn executes a SQL statement.Summary In today’s lesson you have learned how PL/ SQL and Java interoperate....