OpenEdge Data Management: DataServer for Microsoft SQL Server

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Chapter 7: The DataServer Tutorial Using computed columns to enable PROGRESS_RECID support of the ROWID function Use the following procedures to create PROGRESS_RECID to support the ROWID function. Note that computed column technology is available only in MS SQL Server 2005 and later versions. To modify a table to support the ROWID function using a computed column: 1. Add new columns PROGRESS_RECID, PROGRESS_RECID_IDENT_, and PROGRESS_RECID_ALT_, as shown: ALTER TABLE table ADD PROGRESS_RECID AS CASE WHEN PROGRESS_RECID_ALT_ is NULL THEN PROGRESS_RECID_IDENT_ ELSE PROGRESS_RECID_ALT_ END PERSISTED NOT NULL, PROGRESS_RECID_IDENT_ bigint identity, PROGRESS_RECID_ALT_ bigint null default NULL, CONSTRAINT table#_#table progress_recid UNIQUE(PROGRESS_RECID) 2. If you have already created your schema holder, delete and recreate it. Migrating RECID-trigger mechanism to RECID computed column mechanism Use the following procedure to convert a table that supports the ROWID function from one that is trigger-enabled to the more reliable computed column-enabled. Computed column enablement is available only through MS SQL Server 2005 and later. Note: Prior to performing the following steps, ensure you have backed up the tables with which you will be working. To adopt a table to support the ROWID function using computed column from trigger mechanism: 1. Drop the trigger on INSERT for PROGRESS_RECID column as: DROP TRIGGER _TI_tbl-name GO 2. Store the current identity value on the table as follows: select ident_current('') as old_identity_value go 316 OpenEdge Data Management: DataServer for Microsoft SQL Server
Adding extended ABL support 3. Drop the indexes on PROGRESS_RECID, PROGRESS_REID_IDENT_ columns as: drop index #_#progress_recid on drop index #_#progress_recid_ident_on 4. Drop the other indexes which include PROGRESS_RECID column as: drop index #_# on 5. Rename the PROGRESS_RECID column to PROGRESS_RECID_bkp as: EXEC sp_rename '
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® ® PROGRESS® OPENEDGE® OpenEdg
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Contents Preface . . . . . . . . .
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Contents Data output and retrieval
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Contents Migrating an OpenEdge data
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Tables Contents Table 1: DataServer
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Examples Contents Example 1: Passin
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Preface This Preface contains the f
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Chapter 5, “Configuring the DataS
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Before you begin Preface Before att
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In this example, STREAM stream, UNL
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After displaying a message, OpenEdg
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Preface Software Foundation (http:/
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Preface use, copy, modify, and dist
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Preface DISCLAIMS ALL WARRANTIES WI
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Preface INCLUDING ALL IMPLIED WARRA
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Preface WARRANTIES OF MERCHANTABILI
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Preface conditions for packages lik
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Introduction OpenEdge Data Manageme
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DataServer components DataServer co
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DataServer for MS SQL Server logic
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Figure 3 illustrates the schema-loa
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DataServer utilities DataServer uti
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DataServer configurations DataServe
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The remote DataServer configuration
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DataServer configurations Configuri
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Software requirements Software requ
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Guidelines for using the DataServer
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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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Client code page Database design is
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Support for Unicode Database design
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Indexes and sorting Database design
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Database design issues source’s c
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Triggers Database design issues Tri
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Data types Data types MS SQL Server
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Table 9: MS SQL Server data type eq
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Processing activities that require
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Table 11: MS SQL Server 2008 dateti
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Performing data type conversions Da
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Enabling Datetime data types using
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2008, or if you use a native driver
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Default and Special Datetime Defaul
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ABL-to-MS SQL Server data type mapp
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Unknown value (?) Data types The Da
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Record creation Suppose that you ha
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Data source record locking Data sou
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Handling lock timeouts Data source
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Locking impact on queries Data sour
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Data source record locking When thi
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To avoid this type of problem, the
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Error handling If you use NO-ERROR
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Cursors Cursors A cursor is like a
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Cursors your specifications. Adjust
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• Block cursors are directly link
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FIND customer WHERE ROWID(customer)
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For example, the following statemen
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find.p /* This code accesses an Ope
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ABL issues Table 19 summarizes ABL
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RDBMS Stored Procedure Details Open
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RDBMS stored procedure basics RDBMS
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RDBMS stored procedure basics When
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Run Stored-Procedure details •
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Run Stored-Procedure details An exp
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Run Stored-Proc statement execution
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Run Stored-Procedure details Also n
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Loading results into a temp-table T
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Retrieving return codes Interfacing
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Interfacing with RDBMS stored proce
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Loading result sets into temp-table
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Employing additional enhancements I
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Handling errors Handling errors The
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ROWID Support This section presents
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ROWID Support The RUN STORED-PROC c
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ROWID Support If the table uses com
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Additional Features to Enhance Data
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Connection pooling Connection pooli
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DataServer connection management Co
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Firehose exclusions Connection pool
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Cursor downgrades Connection poolin
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Query tuning Query tuning How you s
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LOOKAHEAD NO-LOOKAHEAD SEPARATE-CON
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Query tuning Table 24: Query-tuning
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Join by SQLDB Join by SQLDB For que
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Table 25 describes how these contro
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Modifying the run-time schema check
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Configuring the DataServer Configur
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DataServer components Table 26: Ins
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Configuring a local DataServer Conf
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Configuring a remote DataServer 4.
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5162 Configuring a remote DataServe
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The ubroker.properties file Configu
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Configuring a remote DataServer Tab
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Configuring a remote DataServer The
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Creating a schema holder Creating a
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Creating a schema holder configurat
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Creating a schema holder 3. In the
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Creating a schema holder 10. Choose
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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 If you
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Starting a remote DataServer Starti
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Connection guidelines Connection gu
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Connecting a schema holder at start
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Single-User Mode (-1) Read-Only (-R
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Using a remote DataServer configura
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Value pairs within the connect stri
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Connecting a schema holder Table 31
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qt_separate_connection qt_no_separa
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Connecting a schema holder Table 33
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Connecting a schema holder 1. Each
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Table 38 lists the DataServer log e
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Logging levels You can choose one o
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Enabling ABL to SQL Correlation in
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Connecting a schema holder Example
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Connection failures and OpenEdge re
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Connection failures and OpenEdge re
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Using the $UNIQUE_DSLOG environment
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The DataServer Tutorial OpenEdge Da
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Demonstration databases for DataSer
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Preparing to create demonstration d
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DataServer utilities When you acces
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Prime to ROWID identification ROWID
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Prime to ROWID identification inacc
Page 265 and 266: Creating a schema holder • Choose
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Page 271 and 272: Verifying a schema holder Verifying
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Page 275 and 276: Changing connection information in
Page 277 and 278: Deleting a schema holder Deleting a
Page 279 and 280: Managing server attributes See the
Page 281 and 282: Managing server attributes Defining
Page 283 and 284: Managing server attributes If the p
Page 285 and 286: Managing server attributes 6. The P
Page 287 and 288: Defining a default constraint defin
Page 289 and 290: Managing server attributes 5. Click
Page 291 and 292: Managing server attributes • Resu
Page 293 and 294: Migrating an OpenEdge database to M
Page 303 and 304: Delta df to MS SQL Server Increment
Page 309 and 310: Modifying field-level information Y
Page 311 and 312: Defining the ROWID Modifying a sche
Page 313 and 314: Adding extended ABL support Adding
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Page 319 and 320: Troubleshooting This chapter descri
Page 321 and 322: ODBC options ODBC options The DataS
Page 323 and 324: ODBC options Table 56: DataServer o
Page 325 and 326: Using MS SQL Server and DataServer
Page 327 and 328: Large rows—the PRGRS_MINBUF optio
Page 329 and 330: ODBC options Wait time for asynchro
Page 331 and 332: Using the block cursor switches ODB
Page 333 and 334: Migration Issues This appendix disc
Page 335 and 336: Modifying your application Note the
Page 337 and 338: Sample code for the db.owner.Custom
Page 339 and 340: Server Related Command Line Utiliti
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Page 349 and 350: Syntax Parameters service-name PROB
Page 351 and 352: Other command line utilities for th
Page 353 and 354: Data Type Details C This appendix s
Page 355 and 356: nvarchar 8 SQL_NVARCHAR CHARACTER t
Page 357 and 358: Using qt_debug to Analyze Performan
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Page 361 and 362: Index Numbers 4GLTrans log entry ty
Page 363 and 364: display format 309 overflow checkin
Page 365 and 366: INPUT-OUTPUT option retrieving para
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DataServer (-Dsrv) startup paramete
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221, 242, 359 Schema defined 40 loa
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