HP c-tree-SQL ISQL and Tools manual Following example illustrates usage of the History statement

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ISQL and Tools

Description

The HISTORY statement lists the statements in the statement history buffer, along with an identifying number.

Notes

•ISQL maintains a list of statements typed by the user in the statement history buffer. The SET HISTORY statement sets the size of the history buffer.

•The statements LIST, EDIT, HISTORY, and RUN are not added to the history buffer.

•Use HISTORY to obtain the statement number for a particular statement in the history buffer that you want to execute. Then, use the RUN statement with the statement number as an argument to execute that statement. Or, use LIST statement with the statement number as an argument to make the statement the current statement, which can then be executed using RUN without an argument.

Example

The following example illustrates usage of the HISTORY statement.

ISQL> HISTORY -- Display statements in the history buffer

1start start_ex.sql Ship

2SELECT customer_name FROM customers WHERE customer_name LIKE 'Ship%'

3select tbl from systables where tbltype = 'T' ISQL> RUN 2 -- Run the query corresponding to statement 2 SELECT customer_name FROM customers

WHERE customer_name LIKE 'Ship%'

CUSTOMER_NAME

-------------

Ship Shapers Inc.

1 record selected

ISQL> HI -- In addition to executing, statement 2 is now the current statement

1start start_ex.sql Ship

2SELECT customer_name FROM customers WHERE customer_name LIKE 'Ship%'

3select tbl from systables where tbltype = 'T'

4SELECT customer_name FROM customers WHERE customer_name LIKE 'Ship%'

ISQL> LIST 3 – Display statement 3 and copy it to the end of the history list select tbl from systables where tbltype = 'T'

ISQL> history -- Statement 3 is now also the current statement

1start start_ex.sql Ship

2SELECT customer_name FROM customers WHERE customer_name LIKE 'Ship%'

3select tbl from systables where tbltype = 'T'

4SELECT customer_name FROM customers WHERE customer_name LIKE 'Ship%'

5select tbl from systables where tbltype = 'T'

3-30	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 Syntax Diagram Conventions Documentation OverviewPurpose of this Manual AudienceRelated Documentation Isql and ToolsIntroduction OverviewIsql and Tools FairCom Corporation Quick Tour Introductory TutorialInit IsqlDefine ManageIsql Create Table Custmast 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 Isql Statements Starting Interactive SQLSyntax ArgumentsPassword Statement History SupportUsername ConnectstringFormatting Output of Isql Queries Isql StatementsIsql Statements for Statement History Support 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 SupportIsql Reference 1 @ Execute SyntaxDescription ExampleBreak Syntax BreakspecCustomername ExamplesSkip n Clear Syntax HistoryArgument Column SyntaxOption 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 FLD Column TitleNEW Title ComputeAVG MAX MIN SUM Count VariablenameDefine Syntax ValueColposition DisplayvalueCOL columnnumber @columnnameEdit Syntax Exit Exit or Quit SyntaxRelated Statements 10 GET Syntax Isql GET query.sqlIsql RUN Help Commandsclauses Help SyntaxHistory Syntax Orderstate LotlocationFollowing example illustrates usage of the History statement From HostcommandHost or SH or Syntax List Syntax Quit or Exit Syntax 16 RUN SyntaxQuit Isql HistorySave Syntax 18 SET SyntaxPagesize LinesizePagesize numberlines Connection databasename Default Transaction Isolation Level isolationlevelIsql Break on Isql Select TBL from Systables TBL TBLShow Syntax Is Default ? Spool SyntaxFilename on Database ConnectionsStart Syntax Argument …Isql Spool STK on Isql Spool OFFNull ? Type Length Colname Not Null INT Not Null VarcharDate TablenameType Length Colname Null ? Title Syntax Left Center Right COL nText DoubleIsql Clear Title Isql and Tools FairCom Corporation Data Load Utility dbload IntroductionDbload Command Line Syntax CommandsfilePrerequisites for Dbload OptionsData File Formats Data Load Utility dbloadCommands File Variable Length RecordsFixed 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.procedurename OutfileUsername.tablename Username.triggernameSchema Export Utility dbschema DbschemaImport Begin 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