Reference Manual PUBLIC SAP Adaptive Server Enterprise 16.0 SP02 Document Version: 1.4 – 2016-12-20 Reference Manual: Commands Content 1 Commands................................................................14 1.1 alter database...............................................................14 alter database Restrictions...................................................26 Using alter database for Archive Databases.......................................27 Altering In-Memory and Relaxed Durability Databases............................... 27 Backing Up master After Allocating More Space....................................28 Placing the Log on a Separate Device........................................... 28 Altering Databases for Compression............................................28 In-row LOB Columns.......................................................29 Shrinking Log Space....................................................... 29 Getting Help on Space Usage.................................................30 The system and default Segments............................................. 30 Using alter database to Awaken Sleeping Processes.................................30 Using the alter database for proxy_update Parameter............................... 30 Fully Encrypting Databases...................................................31 1.2 alter encryption key...........................................................31 1.3 alter index.................................................................40 1.4 alter login..................................................................42 1.5 alter login profile............................................................ 49 1.6 alter...modify owner..........................................................53 1.7 alter precomputed result set....................................................58 1.8 alter role..................................................................60 Changing Passwords for Roles................................................64 Mutually Exclusive Roles.................................................... 65 1.9 alter table................................................................. 65 Restrictions for alter table................................................... 85 alter table and Encrypted Columns.............................................88 Altering a Table’s Compression............................................... 89 Interactions Between Compression and Other alter table Parameters.................... 89 Altering the Compression Level for a Table Using Large Objects.........................91 Getting Information About Tables..............................................92 Specifying Ascending or Descending Ordering in Indexes.............................93 Using Cross-Database Referential Integrity Constraints..............................93 Changing Defaults.........................................................94 Setting Space Management Properties for Indexes..................................94 Conversion of max_rows_per_page to exp_row_size.................................95 Reference Manual: Commands 2 PUBLIC Content Using reservepagegap......................................................96 Partitioning Tables for Improved Performance.....................................96 Using Computed Columns...................................................97 Adding IDENTITY Columns...................................................98 Altering Table Schema......................................................98 Restrictions for Modifying a Table Schema.......................................100 Restrictions for Modifying text and image Columns.................................100 Modifying Tables With Unitext Columns.........................................101 Changing Locking Schemes..................................................101 Adding Java-SQL Columns..................................................102 Restrictions for Shared-Disk Clusters.......................................... 103 1.10 alter thread pool............................................................103 1.11 allow....................................................................106 1.12 begin...end................................................................107 1.13 begin transaction...........................................................109 1.14 break.................................................................... 111 1.15 checkpoint ................................................................113 1.16 close.................................................................... 115 1.17 commit...................................................................116 1.18 compute Clause............................................................ 118 compute Clause Restrictions.................................................123 compute Results Appear as a New Row or Rows...................................124 Case-Sensitivity..........................................................125 1.19 connect to...disconnect.......................................................126 1.20 continue..................................................................129 1.21 create archive database...................................................... 130 1.22 create database............................................................133 Restrictions for create database..............................................143 Temporary Databases.....................................................144 Creating Compressed Databases............................................. 145 Creating Databases With In-Row LOBs..........................................145 Creating In-Memory and Relaxed Durability Databases..............................146 New Databases Created from model...........................................146 Ensuring Database Recoverability.............................................147 Using the for load Option....................................................147 Getting Information About Databases.......................................... 148 Using with default_location and for proxy_update..................................148 1.23 create default..............................................................148 create default Restrictions.................................................. 152 Datatype Compatibility.....................................................152 Getting Information about Defaults............................................152 Reference Manual: Commands Content PUBLIC 3 Defaults and Rules........................................................152 Defaults and Nulls........................................................ 153 Specifying a Default Value in create table........................................153 Objects Dependent on Replaced Defaults........................................153 1.24 create encryption key........................................................ 153 1.25 create existing table......................................................... 159 Datatype Conversions..................................................... 163 Changes by Server Class................................................... 163 Remote Procedures.......................................................164 Encrypted Columns.......................................................165 1.26 create function.............................................................165 Objects Dependent on Replaced Functions.......................................172 1.27 create function (SQLJ)........................................................173 1.28 create index...............................................................177 Creating Indexes Efficiently..................................................191 Creating Clustered Indexes..................................................192 Creating Indexes on Compressed Table.........................................192 Creating Indexes on Encrypted Columns........................................ 193 Specifying Ascending or Descending Ordering in Indexes.............................193 Space Requirements for Indexes..............................................193 Duplicate Rows..........................................................193 Using Unique Constraints in Place of Indexes.....................................194 Using the sorted_data Option to Speed Sorts.....................................195 Specifying the Number of Histogram Steps...................................... 196 Space Management Properties...............................................196 Index Options and Locking Modes.............................................197 Using the sorted_data Option on Data-Only-Locked Tables........................... 197 Getting Information About Tables and Indexes....................................198 Creating Indexes on Computed Columns........................................198 Creating Partitioned Indexes.................................................198 Creating Function-Based Indexes............................................. 199 create index and Stored Procedures........................................... 199 Creating Indexes in Parallel..................................................199 1.29 create login...............................................................200 1.30 create login profile..........................................................204 1.31 create manifest file..........................................................207 1.32 create plan................................................................209