OpenEdge Data Management: DataServer for Microsoft SQL Server

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RDBMS Stored Procedure Details 3–22 Getting started If you are using static temp-tables, you must define the temp-table layout in your program to accommodate a specific stored procedure result set before attempting to populate these tables. Once this prerequisite task is done, however, temp-tables can also be automatically populated, offering a potential performance gain in most instances. Unlike the proc-text-buffer technique, you do not have to parse the strings from the proc-text-buffer pseudo table buffer where each row is a character string. Similarly, you do not need to perform any administration to maintain views in the foreign data source or their definitions in the schema holder. For more details about planning your temp-table layout, see the “Creating a temp-table layout plan” section on page 3–23. Employing additional enhancements The temp-table technique offers even greater programming benefits as it extends both send-sql-statements and stored procedures through the result processing techniques previously described in this chapter. For example, by mapping the PROGRESS_RECID to the ROWID field in temp- tables, you can easily support KEY definitions required by the DataSet (commonly referred to as a ProDataSets) to ensure that your data mappings between the foreign data source and the temp-table are accurate. Accurate data mappings are essential for sending data back from the temp-table to the data source. Non-ROWID key definitions can also be described with a unique key. ProDataSets functionality is based on one or more temp-tables that share and extend basic temp-table functionality. For more information about ROWID field, see the “ROWID Support” section on page 3–32. For in depth discussion of temp-tables and more information about ProDataSets, see OpenEdge Development: ProDataSets.
Interfacing with RDBMS stored procedures Table 3–3 highlights additional language elements you can use with the stored procedure and the send-sql-statement language to use ROWID. Table 3–3: Returning result sets and loading the data into temp-tables Note: To optimize enhanced stored procedure calls, it is recommended that you use firehose cursor functionality. Use of firehose cursors provided through the connection pooling functionality supports the fastest way to read and return a result set. For details about connection pooling and firehose cursors, see the “Connection pooling” section on page 4–2. Creating a temp-table layout plan When using static or prepared dynamic temp-tables, you must define the temp-table layout in your application program to accommodate specific result sets before you attempt to populate the temp-tables with data. If a SQL statement retrieves more than one results set, you must define multiple temp-tables to be able to retrieve all the data. Therefore, the success of this approach depends to a large extent on your: • Understanding of the specific data your foreign data source is providing you through a given stored procedure • Ability to correctly define temp-tables ABL Description RUN STORED–PROCEDURE statement Executes the stored procedure or send-sqlstatement and tells OpenEdge that the stored procedure has ended. LOAD-RESULT-INTO phrase Allows data from a result set that is returned for a foreign data source either through a stored procedure or a send-sqlstatement to be put into one or more temp-tables. Static, unprepared dynamic, and prepared dynamic temp-tables are supported. Pass as many temp-tables as result set instances are returned by SQL statements in your Send-SQL or RUN STORED-PROC definition. Note: When using SQL statement(s) through a send-sql-statement or stored procedure to load result sets into temp-tables, RUN STORED-PROC carries an implicit RUN CLOSE-PROC statement. (The stored procedure’s output parameters are available after the RUN STORED-PROC executes and closes the procedure.) PROC-STATUS phrase Reads the return value (optional). 3–23
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PROGRESS® 10 OPENEDGE® OpenEdge®
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Contents Preface . . . . . . . . .
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Contents Values of output parameter
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Contents 8. Troubleshooting. . . .
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Tables Contents Table 1-1: DataServ
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Examples Contents Example 3-1: Pass
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Preface This Preface contains the f
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Chapter 5, “Configuring the DataS
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Typographical conventions This manu
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Preface A called external procedure
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Preface Obtaining more information
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Preface Copyright © 1991 by Lucent
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Preface OpenEdge includes Sonic sof
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Preface WARRANTIES, INCLUDING, BUT
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Introduction 1 The OpenEdge® DataS
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DataServer components DataServer co
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DataServer for MS SQL Server logic
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DataServer components If you plan t
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DataServer utilities DataServer uti
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DataServer configurations DataServe
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DataServer configurations Configuri
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Typical configuration scenarios Dat
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Guidelines for using the DataServer
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Documentation resources Documentati
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Initial Programming Considerations
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Database design issues Database des
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MS SQL Server DataServer data sourc
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Database design issues For example,
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Support for Unicode Database design
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Database design issues restrictions
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Database design issues For example,
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OpenEdge sequences Database design
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Data types MS SQL Server data types
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Table 2-5: MS SQL Server data type
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Determining your application needs
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Data types The ABL DATETIME and DAT
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Data types Table 2-10 provides deta
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Schema Migration > OpenEdge DB to M
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Default and Special Datetime Defaul
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Page 81 and 82: Record creation Record creation Rec
Page 83 and 84: Record creation The VALIDATE or REL
Page 85 and 86: Share locks Data source record lock
Page 87 and 88: Additional record locking details D
Page 89 and 90: Data source record locking to be lo
Page 91 and 92: Transactions Transactions With Data
Page 93 and 94: Error handling Error handling One c
Page 95 and 96: Overflow checking Error handling Ov
Page 97 and 98: Impact of MAX-ROWS Cursors The MAX-
Page 99 and 100: Block cursors on versus off Cursors
Page 101 and 102: ABL issues • If you force the cre
Page 103 and 104: ABL issues Include the SCROLLING op
Page 105 and 106: ABL issues When you run find.p with
Page 107 and 108: NO-LOCK option 1 SHARE-LOCK option
Page 109 and 110: RDBMS Stored Procedure Details 3 Th
Page 111 and 112: RDBMS stored procedure basics RDBMS
Page 113 and 114: RDBMS stored procedure basics schem
Page 115 and 116: Run Stored-Procedure details •
Page 117 and 118: Run Stored-Procedure details An exp
Page 119 and 120: Run Stored-Proc statement execution
Page 121 and 122: Data output and retrieval options D
Page 123 and 124: Interfacing with RDBMS stored proce
Page 125 and 126: Technique to use proc-text-buffer I
Page 129: Loading result sets into temp-table
Page 133 and 134: Details about a dynamic temp-table
Page 139 and 140: Handling errors • If you try to e
Page 141 and 142: ROWID Support It is important to no
Page 143 and 144: ROWID Support If the table uses com
Page 145 and 146: DEFINE VARIABLE hSendSQL AS HANDLE
Page 147 and 148: Additional Features to Enhance Data
Page 149 and 150: Enhancements overview For installat
Page 151 and 152: Firehose and Fast Forward-Only Curs
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Page 155 and 156: Query tuning Query tuning How you s
Page 157 and 158: LOOKAHEAD NO-LOOKAHEAD SEPARATE-CON
Page 159 and 160: Caching records Caching records The
Page 161 and 162: Join by SQLDB FOR EACH customer, EA
Page 163 and 164: Modifying the run-time schema check
Page 165 and 166: Configuring the DataServer 5 Config
Page 167 and 168: DataServer components Table 5-1: In
Page 169 and 170: Configuring a local DataServer Conf
Page 171 and 172: Configuring a remote DataServer 5.
Page 173 and 174: Configuring a remote DataServer For
Page 175 and 176: Configuring a remote DataServer Whe
Page 177 and 178: Configuring a remote DataServer The
Page 179 and 180: Creating a schema holder Creating a
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Creating a schema holder 4. Start t
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Creating a schema holder Table 5-4
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Creating a schema holder You can al
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Typical configuration for a remote
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Typical configuration for a remote
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Connecting the DataServer You can s
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Starting a remote DataServer Starti
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Starting a remote DataServer Starti
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Starting a remote DataServer For ex
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Connecting a schema holder Connecti
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Direct Connect (-DirectConnect) Pas
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Note the following command syntax u
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Use the PRGRS_CONNECT parameter in
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Connecting a schema holder Table 6-
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Connecting a schema holder 3. The v
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Connecting a schema holder Note: Ap
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Connecting a schema holder The ABL
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Connection troubleshooting Connecti
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Setting the log file location Conne
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The DataServer Tutorial 7 This chap
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Preparing to create demonstration d
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Preparing to create demonstration d
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DataServer utilities When you acces
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Creating a schema holder 4. In the
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Updating a schema holder Updating a
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Verifying a schema holder Verifying
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Verifying a schema holder 4. There
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Changing connection information in
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Deleting a schema holder Deleting a
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Migrating an OpenEdge database to M
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Delta df to MS SQL Server Increment
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Modifying field-level information Y
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Defining the ROWID Modifying a sche
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Adding extended ABL support Adding
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Adding extended ABL support Using c
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Adding extended ABL support create
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Troubleshooting This chapter descri
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ODBC options Tuning your environmen
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Tuning your environment with the -D
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SVUB,x—the Unified Broker Server
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Adjusting values Tuning your enviro
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Migration Issues A This appendix di
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Modifying your application Note the
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Sample code for the db.owner.Custom
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Server Related Command Line Utiliti
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-validate -help Progress Explorer c
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-host host-name Progress Explorer c
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Progress Explorer command line util
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-user user-name Progress Explorer c
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Syntax Parameters service-name PROB
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Non-Progress Explorer command line
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Data Type Details C This appendix s
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ntext 9 nvarchar(max) SQL_NLONGVARC
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Using qt_debug to Analyze Performan
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Index Numbers 4GLTrans log entry ty
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Data types 2-17, C-1 changing 7-34
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K Key buffer troubleshooting 8-8 Ke
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Progress Explorer Framework 5-23 an
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Service Name (-S) shutdown paramete
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