Oracle SQL Internals Handbook phần 6 docx

... cardinality." 96 Oracle SQL Internals Handbook References Oracle 9i Release 2: Database Performance Tuning Guide and Reference Chapter 7. Oracle 9I Release 2: Supplied PL /SQL Packages and ... and contrived statistics, it no longer seems safe to tamper with stored outlines. 86 Oracle SQL Internals Handbook Note that we have updated the indexed column...

Ngày tải lên: 08/08/2014, 20:21

... performance improvement factor is typically associated 48 Oracle SQL Internals Handbook Trees in SQL CHAPTER 5 Trees in SQL: Nested Sets and Materialized Path Relational databases ... is the test of the method (in which 27/32 is the node 2.1.2, while 7/8 is 2.1): 56 Oracle SQL Internals Handbook select lpad(' ',3*depth)||name from hierarchy order...

Ngày tải lên: 08/08/2014, 20:21

... of SQL tuning, and they don't require a through understanding of the internals of Oracle SQL. Let's begin with an overview of the Oracle SQL optimizers. 74 Oracle SQL Internals Handbook ... locked by default in Oracle 9) and list the available tables, you will find that Oracle 9 has one more table than Oracle 8. The tables are: 76 Oracle SQL In...

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... Advanced SQL Chapter 15 - SQL with Keyword Searches 163 Keyword Searches by Joe Celko 163 Chapter 16 - Using SQL with Web Databases 167 Web Databases by Joe Celko 167 Chapter 17 - SQL and ... and Sibling Number 56 Calculating Materialized Path and Distance between nodes 57 The Final Test 60 Chapter 6 - SQL Tuning Improvements 64 iv Oracle SQL Interna...

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... 150 261 38 14.55 175 85 19 22.35 12 710399 344 762 48.53 28 266 1 1 469 55.2 107 62 762 364 87 58.13 2 36 510 339 66 .47 205 37379 24981 66 .83 6 129022 91359 70.8 228 71 65 91.54 ... Nested Sets. Oracle 9i added two new columns to the plan_table: access_predicates and filter_predicates. Our parsing technique allows 8 Oracle SQL Internals Handbook...

Ngày tải lên: 08/08/2014, 20:21

... decision. 34 Oracle SQL Internals Handbook SQL, reduce the overheads, and allow you greater flexibility in testing, manipulating and installing stored outlines. 30 Oracle SQL Internals Handbook ... parameters, again settable at both index and session level, allow even more 36 Oracle SQL Internals Handbook SQL Tuning Using dbms_stats CHAPTER 4 Query...

Ngày tải lên: 08/08/2014, 20:21

... Oracle SQL Internals Handbook References Oracle 9i Release 2 Datawarehousing Guide, Chapter 17. Oracle 9i Release 2 Supplied Types and PL /SQL packages, Chapter 90 (DBMS_xplan). $ORACLE_ HOME/rdbms/admin ... skip scans, and btree to bitmap conversions. References Oracle 9i Release 2 Datawarehousing Guide, Chapter 6. 104 Oracle SQL Internals Handbook F...

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... more subtle bitmap join index. 124 Oracle SQL Internals Handbook Embedding SQL in Java & PL /SQL CHAPTER 13 Java vs. PL /SQL: Where Do I Put the SQL? Note: The Source Code file that ... V_1922 162 43_F_5_E_9_9_0 The problem of incomprehensibility can be addressed by running script otrcsyn .sql in directory $ORACLE_ HOME/otrace/demo. 138 Oracle SQL...

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... CONNECTION (DSL) JAVA ORACLE PACKAGE Single statement 2 86 113 Multiple statements 166 2 5 06 TRUNCATE 217 332 152 Oracle SQL Internals Handbook Matrix Transposition in Oracle SQL CHAPTER 1 4 ... specify parameters in the PreparedStatement SQL string, but not in a Statement SQL string. Single statement: 148 Oracle SQL Internals Handbook SQL wi...

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... 86 DBMS_OUTLN_EDT 41 dbms_stats 85 optimizer_mode 36, 85 DBMS_STATS 36, 41 oracle_ trace 133 dbms_xplan 117 oracle_ trace_collection_ name 135 depth-first convergence point 52, 56 oracle_ trace_collection_ ... filter out a lot of documents before doing the GROUP BY and the relational division. 166 Oracle SQL Internals Handbook company from the database. The long-te...

Ngày tải lên: 08/08/2014, 20:21