HP c-tree-SQL ISQL and Tools manual Commands File, Variable Length Records, Fixed Length Records

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ISQL and Tools

4.4.1Variable Length Records

For variable length records, the fields in the data file can be of varying length. Unless the key- word FIXED is used in the commands file, it is assumed that the dbload record processing will be for variable length records.

4.4.2Fixed Length Records

For fixed length records, the fields in the data file must be of fixed length. The length of the record must be the same for all records and is specified in the commands file. In case of fixed length records, the field and record delimiters are ignored. That is, the POSITION specification must be such that the delimiters are ignored. For more information on the commands file refer to Section 4.5 "The Commands File" on page 4-4.

The data files that contain fixed length records can either be ASCII or binary files.

4.5THE COMMANDS FILE

The commands file specifies instructions for dbload to load the records into the table specified. Thus the commands file defines what dbload will be performing for a particular loading pro- cess.

There is no file naming convention for the commands file. For example, the commands file name to load the orders table could be orders.cmd.

The commands file must contain the following parts:

•The DEFINE RECORD statement

•The FOR EACH statement

The syntax definition for the commands file is as shown:

dbload_commands: define_record_statement for_each_statement

The following is sample commands file showing load instructions.

DEFINE RECORD ord_rec AS

( ord_no, item_name, date, item_qty ) FIELD DELIMITER ' ' ;

FOR EACH RECORD ord_rec FROM ord_in

INSERT INTO ADMIN.orders (order_no, product, order_date, qty)

VALUES (ord_no, item_name, date, item_qty) ;

NEXT RECORD

The above commands specification instructs dbload to load records into the orders table. The fields in the data file, ord_in, appear in the order listed in the DEFINE RECORD statement.

4-4	FairCom Corporation

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Contents Isql and Tools Reference Guide For use with c-treeSQL ServerPage Table of Contents Data Load Utility dbload Tutorial Source Code IiiFairCom Corporation Purpose of this Manual Syntax Diagram ConventionsDocumentation Overview AudienceRelated Documentation Isql and ToolsIntroduction OverviewIsql and Tools FairCom Corporation Init Quick TourIntroductory Tutorial IsqlIsql Create Table Custmast DefineManage Isql Commit Work CustmastQuick Tour DoneComplete Introductory Tutorial Code Relational Model and Indexing Tutorial ISQLTutorial2.sqlQuick Tour Values Insert IntoValues Insert Into Commit Work QTY PriceComplete Relational Model and Indexing Tutorial Source Code Locking Tutorial ISQLTutorial3.sql@ISQL @iSQLTutorial3.sql Isql Delete from Custmast Complete Locking Tutorial Source Code Transaction Processing Tutorial ISQLTutorial4.sqlTransaction Rollback Work Complete Transaction Processing Tutorial Source Code Syntax Isql StatementsStarting Interactive SQL ArgumentsUsername PasswordStatement History Support ConnectstringIsql Statements for Statement History Support Formatting Output of Isql QueriesIsql Statements Statement SummaryIsql Statements for Query Formatting Summary DisplayExample 3-1 Unformatted Query Display from Isql Customername Customercity Orderid OrdervalueFormatting Column Display with the Column Statement Example 3-2 Controlling Display Width of Character ColumnsCustomername Customercity Example 3-3 Customizing Format of Numeric Column DisplaysOrdervalue Example 3-4 Specifying Column Breaks and Values with Display Numorders Customername Example 3-6 Specifying a Query Header and Footer with Title Help and Table Statements Transaction SupportDescription Isql Reference1 @ Execute Syntax ExampleBreak Syntax BreakspecCustomername ExamplesSkip n Clear Syntax HistoryOption ArgumentColumn Syntax Break Column Compute Display TitleHeading headingtext ColumnnameFormat formatstring Date-Time Format Strings for the Column Statement Character DescriptionChar Null ? Type Length ColnameNot Null INT Sysdate OrderinfoAmount NEW Title FLDColumn Title ComputeAVG MAX MIN SUM Count VariablenameDefine Syntax ValueCOL columnnumber ColpositionDisplayvalue @columnnameEdit Syntax Exit Exit or Quit SyntaxRelated Statements 10 GET Syntax Isql GET query.sqlIsql RUN History Syntax Help CommandsclausesHelp Syntax Orderstate LotlocationFollowing example illustrates usage of the History statement From HostcommandHost or SH or Syntax List Syntax Quit Quit or Exit Syntax16 RUN Syntax Isql HistoryPagesize Save Syntax18 SET Syntax LinesizePagesize numberlines Isql Break on Isql Select TBL from Systables TBL Connection databasename DefaultTransaction Isolation Level isolationlevel TBLShow Syntax Filename on Is Default ?Spool Syntax Database ConnectionsIsql Spool STK on Start SyntaxArgument … Isql Spool OFFNull ? Type Length Colname Not Null INT Not Null VarcharDate TablenameType Length Colname Null ? Text Title SyntaxLeft Center Right COL n DoubleIsql Clear Title Isql and Tools FairCom Corporation Data Load Utility dbload IntroductionPrerequisites for Dbload Dbload Command Line SyntaxCommandsfile OptionsData File Formats Data Load Utility dbloadFixed Length Records Commands FileVariable Length Records Next RecordDefine Record Statement Char Short Long Float DoubleFor Each Statement NullExample 4-1 Sample dbload commands files ExamplesPosition not specified for fixed length record Compilation ErrorsRecord name redefined Fatal Errors Isql and Tools FairCom Corporation Data Unload Utility dbdump Prerequisites for DbdumpDbdump Command Line Syntax Data Unload Utility dbdump Short Long Float DoubleFor Record Statement Define Record custrec of Fixed Length 37 AS Isql and Tools FairCom Corporation Schema Export Utility dbschema Username.tablename Username.procedurenameOutfile Username.triggernameImport Begin Schema Export Utility dbschemaDbschema ENDIsql and Tools FairCom Corporation Tutorial Source Code Commit Work Select * from Custmast Delete from CustmastVARCHAR6 IntegerMoney Tutorial Source Code Commit Work Delete from CustmastImdesc VARCHAR48 Select * from orderlist Select * from orderitems Isql and Tools FairCom Corporation Symbols Index-iIsql Index-ii FairCom CorporationIndex Index-iii FairCom Corporation