xml in 21 days
Teach yourself SQL in 21 days
... SELECT into your system, you might get the following response:INPUT:SQL> SELECT;OUTPUT:SELECT *ERROR at line 1:ORA-00936: missing expressionThe asterisk under the offending line indicates ... powerful calculations in a SELECT statement. Modulo (%)The modulo operator returns the integer remainder of the division operation. Using the table REMAINS, type the following:INPUT:SQL> SELECT ... Molding the Data You RetrieveDay 5 Clauses in SQLDay 6 Joining TablesDay 7 Subqueries: The Embedded SELECT StatementWeek 1 in ReviewWeek 2 at a GlanceDay 8 Manipulating DataDay 9 Creating...
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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, ... 143loops, 121 CURSOR FOR, 254debugging, 136FOR, 121- 122, 146common errors, 124EXIT statement, 140listing, 121 nesting, 121 guidelines, 147incrementing through,123-124listing, 123infinite, ... 281adding\removing data,283-284declaring, 282-283variablesbinding, 455queries, 461BLOB, initializing, 160CLOB, initializing, 160cursors, 257-261as arguments, 260-261assigning, 260declaring,...
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Contents i What’s New with This Edition Teach Yourself ANSI C++ in 21 Days, Premier Edition, is
... Yourself ANSI C++ in 21 Days, Premier Edition, is a new edition of theinternational bestseller, Teach Yourself C++ in 21 Days. This Premier Edition offersmore than just 21 days of learning ANSI/ISO ... Member Functions of cin 480Single Character Input 480Getting Strings from Standard Input 482Using cin.ignore() 485peek() and putback() 486Output with cout 487Flushing the Output 487Related ... paradigm used in C programming andstart thinking in objects.Where You Are GoingThe first week covers the material you need to get started with programming in general, andwith C++ in particular....
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Teach Yourself PL/SQL in 21 Days- P1
... 995Implementing Loops and GOTOs 1276Using Oracle’s Built -In Functions 1557Procedures, Packages, Errors, and Exceptions 189WEEK1 In Review 217 WEEK2 At a Glance 219 8Using SQL 221 9 Manipulating ... Entries into an Index-by Table 267Referencing Values in an Index-by Table 268Changing Table Entries 270Deleting Table Entries 270PL/SQL Table Methods 271Using Nested Tables 274Declaring a ... generated linenumbers and the listing line numbers, the listings have been edited to show only one setof line numbers.For example, when typing in a simple PL/SQL block, SQL*Plus would generate linenumbers...
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Teach Yourself PL/SQL in 21 Days- P2
... 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 outermost block (see line 4), thus any nestedblock, ... watermark.Writing Declarations and Blocks 59222:23: DBMS_OUTPUT.PUT_LINE(‘Back in the main block’);24:25: But we cannot compile the following line because b_name26: is not defined in this block.27: ... successfully completed.Line 5 begins a PL/SQL anonymous block. The iifnfunction is declared withinthe scope of this outer block (see lines 8 through 21) . The keyword BEGIN in line22 marks the start...
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Teach Yourself PL/SQL in 21 Days- P3
... typing the keyword BEGIN:BEGINBecause you are not performing anything in this function except returning a value, youwill code a NULLstatement, which is discussed later in this lesson in ... 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....
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Tài liệu Teach Yourself PL/SQL in 21 Days- P4 pptx
... (inverse) cosine of a number, expressed in radians.ASINReturns the arc (inverse) sine of a number, expressed in radians. ATANReturns the arc (inverse) tangent of a number (x), expressed in ... Oracle into stepping through a FORloop.TheWHILEloop gives you more flexibility in looping, whether you are steppingthrough a loop or even executing a loop. Listing 5.9 demonstrates stepping ... CHARorVARCHAR2string into a DATEvalue. TO_LABELConverts a CHARorVARCHAR2string into a MLSLABEL.TO_MULTI_BYTEConverts any single-byte string of characters into a multibyte string.TO_NUMBERConverts...
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Tài liệu Teach Yourself PL/SQL in 21 Days- P5 doc
... resulting month does not have as many days. (Forexample, April 30th is the answer to adding one month.) The following three examples in Listing 6 .21 provide the same result.LISTING6 .21 Adding ... 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 ... left in the given month.LAST_DAY(input_date_passed) You will compute the last days in the month when summer officially starts from 1999.Execute the code in Listing 6.27.LISTING6.27Finding...
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Tài liệu Teach Yourself PL/SQL in 21 Days- P6 docx
... 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 ... will insert a new record into the Employeetable.This insert statement will use the next increment of the emp_id_seqsequence for thevalue to be inserted into the emp_idcolumn.INSERT into ... IF;29: END;30: /Line 12 places a value into the table associated with the index value 10. Thereare no other values in the table. Line 17, inside the nested PL/SQL block (lines16 21) , attempts...
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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 ... 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 ... read in. 13: depts dept_table;14: depts_max PLS_INTEGER;15: inx1 PLS_INTEGER;16: BEGIN17: Initialize the index into the table.18: depts_max := 0;19:20: Initialize the table by creating...
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Tài liệu Teach Yourself PL/SQL in 21 Days- P8 pptx
... (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 ... database.LISTING12.8Inserting Some buildingObjects1: INSERT INTO buildings2: values (building(‘Victor Building’,3: address(‘203 Washington Square’,’ ‘,’Lansing’,4: ‘MI’,’48823’,’ ‘),5:...
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Tài liệu Teach Yourself PL/SQL in 21 Days- P9 doc
... 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 ... SUBSTR(BLOB_Locator,Read_Amount IN BINARY_INTEGER,Starting_Location IN INTEGER := 1)RETURN RAW;FUNCTION SUBSTR(CLOB_Locator CHARACTER SET Set_Desired,Read_Amount IN BINARY_INTEGER,Starting_Location IN INTEGER := ... COMPARE(Lob1 IN BLOB,Lob2 IN BLOB,Number_Bytes_to_Compare IN INTEGER,Origin_Lob1 IN INTEGER := 1,Origin_Lob2 IN INTEGER := 1)RETURN Compare_Result_Integer;FUNCTION COMPARE(Lob1 IN CLOB CHARACTER...
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Tài liệu Teach Yourself PL/SQL in 21 Days- P10 docx
... IMMEDIATEstatement.EXECUTE IMMEDIATE string[INTO {variable[, variable] | record}][USING [IN | OUT | IN OUT] bind[, [IN | OUT | IN OUT] bind] ]; In this syntax the parameters are as follows:•stringis a variable ... DBMS_SQLpackage.Listing 16.7 shows a PL/SQL block that dynamically generates an INSERTstatement, andthen uses it to insert data into the table yourtable,created in Listing 16.6.LISTING16.7 Using Bind ... IN INTEGER,name IN VARCHAR2,value IN datatype);PROCEDURE BIND_VARIABLE_CHAR(c IN INTEGER,name IN VARCHAR2,value IN CHAR,out_value_size IN INTEGER); In this syntax the parameters are as...
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Tài liệu Teach Yourself PL/SQL in 21 Days- P11 docx
... 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 ... combined_names := ‘’;40: FOR inx1 IN 1 lines_to_get LOOP41: IF inx1 > 1 THEN42: combined_names := combined_names || ‘ and ‘;43: END IF;44:45: combined_names := combined_names || names(inx1);46: ... watermark.Writing to Files and the Display 49117GET_LINESoccurs in lines 32–34. The lines_to_getparameter contains the value 3,tellingGET_LINESto return all three names. The loop in line 40–43...
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Tài liệu Teach Yourself PL/SQL in 21 Days- P12 doc
... the polling time in seconds using SET_DEFAULTS.The Syntax for the SET_DEFAULTSProcedurePROCEDURE SET_DEFAULTS(polling_interval IN NUMBER);You specify the interval between polling in seconds. ... 1,000 days! NoteRemoving the PipeYou can free resources by removing the pipes. Enter and execute the code in Listing 19.9.LISTING19.9Removing Both Pipes1: DECLARE2: v_stat NUMBER ;3: BEGIN4: ... support the GUI libraries in the sense that you canwrite them into code, but any attempt at actually instantiating a GUI interface within theserver results in an exception being thrown.Will PL/SQL...
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