5.2.1Syntax Rules for Specifying Properties The properties are set using keyword-value pairs in the SQLCREATE TABLEACCESS PARAMETERSclause and in the configuration files. The syntax must obey these rules: The f
Oracle SQL Reference 下载积分: 0 内容提示: Reserved WordsACCESSADDALLALTERANDANYASASCAUDITBETWEENBYCHARCHECKCLUSTERCOLUMNCOMMENTCOMPRESSCONNECTCREATECURRENTDATEDECIMALDEFAULTDELETEDESCDISTINCTDROPELSEEXCLUSIVEEXISTSFILEFLOATFORFROMC. Michael Eliasz, Sr. Oracle Data ArchitectBuilt-in FunctionsABSACOSADD_MONTHSASCII...
SQL > col tablespace format a20SQL > select b.file_id 文件ID, b.tablespace_name 表空间, b.file_name 物理文件名, b.bytes 总字节数, (b.bytes-sum(nvl(a.bytes,0))) 已使用, sum(nvl(a.bytes,0)) 剩余, sum(nvl(a.bytes,0))/(b.bytes)*100 剩余百分比 from dba_free_space a,dba_d...
除了记录和表之外,还有对象类型、集合(嵌套表和VARRAYS)等类型,这些将专门讲解。 四、引用(REFERENCE) 在PL/SQL8.0之前,只有一种类型--REF CURSOR,也就是游标。它的定义较为简单, CURSOR cursor_name IS select ...from...; 在PL/SQL8.0之后,引入了REF类型,它指向一个对象。这种类型将单独讲解。(等我弄明...
Changes in This Release for Oracle Database SQL Language Reference 1 Introduction to Oracle SQL 2 Basic Elements of Oracle SQL 3 Pseudocolumns 4 Operators 5 Expressions 6 Conditions 7 Functions 8 Common SQL DDL Clauses 9 SQL Queries and Subqueries 10 SQL Statements: ADMINISTER KEY MANAGEMENT to...
ROUND ROUND(d [, fmt]) Rounds a date/time value to the nearest date/time unit specified. Parameters d Specifies a date/time value. fmt Specifies a date format element. See Table … - Selection from Oracle SQL: the Essential Reference [Book]
Oracle SQL: the Essential Reference by David C. Kreines Buy on Amazon 7.3. Declaration Section The declaration section is required if any variables are to be used in a PL/SQL block. The declaration section also defines cursors, types, local procedures, and functions that are used in a block...
Structured Query Language (SQL) is the set of statements with which all programs and users access data in an Oracle database.
本系列将以《Database PL/SQL Language Reference》的PL/SQL代码例为主线进行介绍。 Oracle PL/SQL基础语法学习16:CASE Expression(CASE表达式) CASE Expression(CASE表达式)介绍 在Oracle PL/SQL中,CASE表达式(CASE Expression)是一个非常强大且常用的工具,可以用于在SQL或PL/SQL中执行基于条件的操作。CASE表达式类似...
. Acessado em 04 de Julho de 2011.Oracle Database 10g PLSQL User‘s Guide and Reference. http://www.oracle.com/pls/db102 /homepage . 2005Oracle Database 10g PLSQL User‘s Guide and Reference.http://www.oracle.com/pls/db102 /homepage. 2005...