Oracle SQL Developer

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Locale-Dependent SQL Functions with Optional NLS ParametersSuch a query can be made independent of the current date language by using astatement similar to the following:SELECT last_name FROM employeesWHERE hire_date > TO_DATE('01-JAN-1999','DD-MON-YYYY','NLS_DATE_LANGUAGE = AMERICAN');In this way, SQL statements that are independent of the session language can bedefined where necessary. Such statements are necessary when string literals appear inSQL statements in views, CHECK constraints, or triggers.Note: Only SQL statements that must be independent of thesession NLS parameter values should explicitly specify optionalNLS parameters in locale-dependent SQL functions. Using sessiondefault values for NLS parameters in SQL functions usually resultsin better performance.All character functions support both single-byte and multibyte characters. Exceptwhere explicitly stated, character functions operate character by character, rather thanbyte by byte.The rest of this topic includes the following topics:■ Default Values for NLS Parameters in SQL Functions■ Specifying NLS Parameters in SQL Functions■ Unacceptable NLS Parameters in SQL Functions11.4.1 Default Values for NLS Parameters in SQL FunctionsWhen SQL functions evaluate views and triggers, default values from the currentsession are used for the NLS function parameters. When SQL functions evaluateCHECK constraints, they use the default values that were specified for the NLSparameters when the database was created.11.4.2 Specifying NLS Parameters in SQL FunctionsNLS parameters are specified in SQL functions as 'parameter = value'. For example:'NLS_DATE_LANGUAGE = AMERICAN'The following NLS parameters can be specified in SQL functions:NLS_DATE_LANGUAGENLS_NUMERIC_CHARACTERSNLS_CURRENCYNLS_ISO_CURRENCYNLS_DUAL_CURRENCYNLS_CALENDARNLS_SORTTable 11–5 shows which NLS parameters are valid for specific SQL functions.Table 11–5SQL FunctionTO_DATESQL Functions and Their Valid NLS ParametersValid NLS ParametersNLS_DATE_LANGUAGE,NLS_CALENDAR11-22 SQL Developer Online Help
Locale-Dependent SQL Functions with Optional NLS ParametersTable 11–5SQL FunctionTO_NUMBERTO_CHARTO_NCHARNLS_UPPERNLS_LOWERNLS_INITCAPNLSSORT(Cont.) SQL Functions and Their Valid NLS ParametersValid NLS ParametersNLS_NUMERIC_CHARACTERS,NLS_CURRENCY,NLS_DUAL_CURRENCY,NLS_ISO_CURRENCY,NLS_DATE_LANGUAGE,NLS_NUMERIC_CHARACTERS,NLS_CURRENCY,NLS_ISO_CURRENCY,NLS_DUAL_CURRENCY,NLS_CALENDARNLS_DATE_LANGUAGE,NLS_NUMERIC_CHARACTERS,NLS_CURRENCY,NLS_ISO_CURRENCY,NLS_DUAL_CURRENCY,NLS_CALENDARNLS_SORTNLS_SORTNLS_SORTNLS_SORTExample 11–16 illustrates how to use NLS parameters in SQL functions.Example 11–16Using NLS Parameters in SQL FunctionsSELECT TO_DATE('1-JAN-99', 'DD-MON-YY','NLS_DATE_LANGUAGE = American') "01/01/99" FROM DUAL;SELECT TO_CHAR(hire_date, 'DD/MON/YYYY','NLS_DATE_LANGUAGE = French') "Hire Date" FROM employees;SELECT TO_CHAR(SYSDATE, 'DD/MON/YYYY','NLS_DATE_LANGUAGE = ''Traditional Chinese'' ') "System Date" FROM DUAL;SELECT TO_CHAR(13000, '99G999D99','NLS_NUMERIC_CHARACTERS = '',.''') "13K" FROM DUAL;SELECT TO_CHAR(salary, '99G999D99L', 'NLS_NUMERIC_CHARACTERS = '',.''NLS_CURRENCY = ''EUR''') salary FROM employees;SELECT TO_CHAR(salary, '99G999D99C', 'NLS_NUMERIC_CHARACTERS = ''.,''NLS_ISO_CURRENCY = Japan') salary FROM employees;SELECT NLS_UPPER(last_name, 'NLS_SORT = Swiss') "Last Name" FROM employees;SELECT last_name FROM employeesORDER BY NLSSORT(last_name, 'NLS_SORT = German');Note: In some languages, some lowercase characters correspondto more than one uppercase character or vice versa. As a result, thelength of the output from the NLS_UPPER, NLS_LOWER, and NLS_INITCAP functions can differ from the length of the input.Working in a Global Environment 11-23
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Oracle SQL DeveloperOnline HelpRele
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Contents1 SQL Developer Concepts an
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3.12 Create/Edit Index ............
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6.3.2 Updating Data With the UPDATE
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10.2.5 SQL*Plus SET Commands.......
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SQL Developer User InterfaceThe men
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SQL Developer User InterfaceThe Com
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Database Objects1.2 Database Object
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Database Objectscontaining the mast
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Database Objects■■■■■■
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Database ConnectionsWhen you start
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Running and Debugging Functions and
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Using the SQL WorksheetRelated Topi
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Using the SQL WorksheetScript Runne
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Using the SQL Worksheetmentioned in
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Reports1.9 ReportsRelated TopicsRun
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Reports1.9.3 Table reportsTable rep
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Reportsissues and vulnerabilities,
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SQL Developer Preferencesand the SQ
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SQL Developer Preferences1.10.3 Cod
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SQL Developer PreferencesSQL Develo
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SQL Developer User Information: Loc
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Supplementary Oracle Database Infor
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Creating a Table (Books)the table t
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Creating a Table (Transactions)Colu
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Creating a SequenceName: for_key_bo
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Creating a PL/SQL Procedure2.6 Crea
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Using the SQL Worksheet for Queries
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Script for Creating and Using the L
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Script for Creating and Using the L
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Check for UpdatesTo remove the effe
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Select Library3.8 Select LibraryThi
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Create PL/SQL Function, Procedure,
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Create Table (quick creation)Relate
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Create/Edit Table (with advanced op
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Create Type (User-Defined)For more
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Create/Edit ViewTest Syntax: Checks
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Configure File Type AssociationsDia
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Find/Replace TextTo add a type of o
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Save/Save As3.37 Save/Save As3.38 S
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SQL*Plus Location3-28 SQL Developer
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Managing TablesTo include lowercase
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Managing Tables4.2.4 Column Constra
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Managing Indexes4.3 Managing Indexe
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Managing Indexesuseful when all of
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Managing Views4.4 Managing Views4.3
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Managing Synonyms4-12 SQL Developer
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Storing Numeric Data■■NCHAR and
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Storing Numeric DataThe absence of
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Storing Datetime Data5.4.1.2 Using
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Storing Datetime Data5-8 SQL Develo
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Retrieving Data With Queries■■
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Retrieving Data With QueriesSee Als
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Retrieving Data With QueriesSee Als
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Transaction Control Statements6.3.2
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Using Pseudocolumns, Sequences, and
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Using SQL Data Definition Language
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Using SQL Data Definition Language
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Entering and Executing PL/SQL CodeY
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Utilizing the Main Features of PL/S
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Page 146 and 147: Utilizing the Main Features of PL/S
Page 148 and 149: Handling PL/SQL ErrorsTo handle une
Page 150 and 151: Handling PL/SQL ErrorsIf you redecl
Page 152 and 153: Handling PL/SQL Errors7-26 SQL Deve
Page 154 and 155: Overview of Packages and Subprogram
Page 156 and 157: Managing Packagescalling procedures
Page 158 and 159: Oracle Product-Specific PackagesTab
Page 160 and 161: Oracle Product-Specific PackagesTab
Page 162 and 163: Oracle Product-Specific Packages8-1
Page 164 and 165: Overview of Triggers9.1.1 Types of
Page 166 and 167: Overview of Triggers■■A trigger
Page 168 and 169: Designing TriggersNote: A procedure
Page 170 and 171: Using SQL*Plus■■■Running Scri
Page 172 and 173: Using SQL*PlusA SQL script file is
Page 174 and 175: Using SQL*Plus10-6 SQL Developer On
Page 176 and 177: Overview of Globalization Support
Page 178 and 179: Setting up the Globalization Suppor
Page 192 and 193: SQL and PL/SQL Programming with Uni
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Page 198 and 199: Locale-Dependent SQL Functions with
Page 200 and 201: COLLECTION_IS_NULL exception, 7-22c
Page 202 and 203: overview, 7-14EXPLAIN PLANexecution
Page 204 and 205: NLSSORT SQL function, 11-21NO_DATA_
Page 206 and 207: displaying output from PL/SQL, 7-9s
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Oracle SQL Developer

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