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DML Reference, 10g Release 1 (10.1)

NVL

NVLThe NVL function replaces a NA value with a string. To evaluate a specified expression and replace … type of the base expression. Syntax NVL ( exp, replacement-exp ) Arguments expr The expression that you

SQL Reference, 10g Release 1 (10.1)

NVL

NVLSyntax nvl::= Description of the illustration nvl.gif Purpose NVL lets you replace (returned … as a blank) with a string in the results of a query. If expr1 is , then NVL returns expr2. If … expr1 is not , then NVL returns expr1. The arguments expr1 and expr2 can have any datatype. If … last_name, NVL(TO_CHAR(commission_pct),

SQL Reference, 10g Release 1 (10.1)

Nulls

Nulls in SQL FunctionsAll scalar functions (except REPLACE, NVL, and CONCAT ) return when given a argument. You … can use the NVL function to return a value when a occurs. For example, the expression NVL

DML Reference, 10g Release 1 (10.1)

18 MONITOR to NVL2

18 MONITOR to NVL2NASPELL NEW_TIME NEXT_DAY NLS Options NONE NORMAL NOSPELL NPV NULLIF NUMBYTES NUMCHARS NUMLINES NVL NVL2

Utilities, 10g Release 1 (10.1)

9 Field List Reference

Combinations of SQL Operators(:field1),'N/A', '0')" field1 CHAR(10) "NVL( LTRIM(RTRIM(:field1)), 'unknown' )"

Pro*COBOL® Programmer's Guide, 10g Release 1 (10.1)

2 Precompiler Concepts

2.2.21 NULLs in SQLzero nor to a blank. Use the NVL function to convert NULLs to non-NULL values, use the IS [NOT] NULL

Pro*FORTRAN® Supplement to the Oracle Precompilers Guide, 10g Release 1 (10.1)

Writing a Pro*FORTRAN Program

Nullszero nor to a blank. Use the NVL function to convert s to non- values, use the IS [NOT] NULL

SQL Reference, 10g Release 1 (10.1)

Comments

Comments Within SQL Statementsstatements contain many comments: SELECT last_name, salary + NVL(commission_pct, 0), job_id, e.department_id … = d.department_id AND salary + NVL(commission_pct,0) > /* Subquery: */ (SELECT salary + NVL … = 'Pataballa'); SELECT last_name, -- select the name salary + NVL(commission_pct, 0),-- total compensation

Pro*PL/1® Supplement to the Oracle Precompilers Guide, 10g Release 1 (10.1)

1 Writing a Pro*PL/1 Program

1.1.6 Nullsneither to zero nor to a blank. Therefore, use either the NVL function, the IS [NOT] NULL operator

DML Reference, 10g Release 1 (10.1)

NVL2

NVL2, use NVL. Return Value The data type of the return value is always the data type of expr2 (that is

User's Guide and Reference, 10g Release 1 (10.1)

2 Fundamentals of the PL/SQL Language

Assigning a SQL Query Result to a PL/SQL Variable); BEGIN SELECT last_name, salary + (salary * nvl(commission_pct,0)) INTO emp_name, wages FROM

Packages and Types Reference, 10g Release 1 (10.1)

24 DBMS_DATA_MINING_TRANSFORM

INSERT_CLIP_TRIM_TAIL Procedure= val(N-floor(*N*q)) rval = NULL where q = ABS(NVL(tail_frac,0)). Nothing is done when q >= 0.5.

Packages and Types Reference, 10g Release 1 (10.1)

24 DBMS_DATA_MINING_TRANSFORM

INSERT_CLIP_WINSOR_TAIL Procedure-floor(N*q)) rval = rcut where q = ABS(NVL(tail_fraq,0)). Nothing is done when q >= 0.5.

Concepts, 10g Release 1 (10.1)

5 Schema Objects

Nulls Indicate Absence of Valuethe IS NULL predicate. Use the SQL function NVL to convert s to non- values. Nulls are not … : Oracle Database SQL Reference for comparisons using IS NULL and the NVL function "Indexes and Nulls " "Bitmap Indexes and Nulls "

Application Developer's Guide - Expression Filter, 10g Release 1 (10.1)

7 Object Types

EXF$INDEXOPERwith the equality predicate through the IS NOT NULL predicate NVL Predicates with NVL (equality

Advanced Replication Management API Reference, 10g Release 1 (10.1)

10 Monitoring a Replication Environment

Monitoring Master Groupsadminreqerror FORMAT 9999 SELECT G.GNAME, NVL(T.CNT1, 0) deftran, NVL(IE.CNT2, 0) deftranerror, NVL … (A.CNT3, 0) adminreq, NVL(B.CNT4, 0) adminreqerror FROM (SELECT DISTINCT GNAME FROM DBA_REPGROUP WHERE

DML Reference, 10g Release 1 (10.1)

A.4 Statements for Working with NA Values

A.4 Statements for Working with NA Valuesany NA values appearing as the specified fill expression. NVL Replaces a NA value with a string

Guide, 10g Release 1 (10.1)

21 SQL for Analysis and Reporting

Filling Gaps in Data… The four added rows each have 0 as their Sales value set to 0 by using the NVL function. SELECT … Product_Name, t.Year, t.Week, NVL(Sales,0) dense_sales FROM (SELECT SUBSTR(p.Prod_Name,1,15

User's Guide and Reference, 10g Release 1 (10.1)

10 Handling PL/SQL Errors

Continuing after an Exception Is Raisedsymbol = 'XYZ'; SELECT price / NVL(earnings, 0) INTO pe_ratio FROM stocks WHERE symbol = 'XYZ'; INSERT … / NVL(earnings, 0) INTO pe_ratio FROM stocks WHERE symbol = 'XYZ'; EXCEPTION WHEN ZERO_DIVIDE THEN

SQL Reference, 10g Release 1 (10.1)

About SQL Conditions

About SQL Conditionsdetermines whether the sum is greater than the number constant 25000: NVL(salary, 0) + NVL(salary


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