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Pro*C/C++ Programmer's Guide, 9i Release 2 (9.2.0.2)

Precompiler Options

VARCHARPurpose Instructs the Pro*C/C++ precompiler to interpret some structs as VARCHAR host variables … . Syntax VARCHAR={NO | YES} Default NO Usage Notes Can be entered only on the command line. When VARCHAR … precompiler as a VARCHAR[n] host variable. VARCHAR can be used in conjunction with the NLS_CHAR

Programmer's Guide, 9i Release 2 (9.2.0.2)

Datatypes

VARCHARThe VARCHAR datatype stores character strings of varying length. The first two bytes contain the … the string in a bind or a define call must include the two length bytes, so the largest VARCHAR string … that can be received or sent is 65533 bytes long, not 65535. For converting longer strings, use the LONG VARCHAR external datatype.

Pro*COBOL® Programmer's Guide, 9i Release 2 (9.2.0.2)

Precompiler Options

VARCHARPurpose The VARCHAR option instructs Pro*COBOL to treat the COBOL group item described in Chapter 5 … , \"Embedded SQL\" as a VARCHAR datatype. Syntax VARCHAR={YES | NO} Default NO Usage Notes Cannot be … entered inline. When VARCHAR=YES, the implicit group item described in Chapter 5, \"Embedded SQL … \" is accepted

Precompilers, 9i Release 2 (9.2.0.2)

Running the Oracle Precompilers

VARCHARyou want the precompiler to get needed information by connecting to Oracle and accessing the data dictionary, you must also specify USERID. VARCHAR

Pro*COBOL® Programmer's Guide, 9i Release 2 (9.2.0.2)

Datatypes and Host Variables

VARCHAR Variablesstring pseudotype called VARCHAR. A VARCHAR variable is a pseudotype that enables you to specify the

Pro*COBOL® Programmer's Guide, 9i Release 2 (9.2.0.2)

Embedded PL/SQL

VARCHAR VariablesWhen entering a PL/SQL block, Oracle9 i automatically checks the length fields of VARCHAR host

Precompilers, 9i Release 2 (9.2.0.2)

Using Embedded PL/SQL

VARCHAR Pseudotype; VARCHAR Pseudotype Recall from Chapter 3, \"Meeting Program Requirements\" that you can use the … VARCHAR pseudotype to declare variable-length character strings. If the VARCHAR is an input host … value stored in the string field. If the VARCHAR is an output host variable, Oracle automatically … sets the length

Pro*C/C++ Programmer's Guide, 9i Release 2 (9.2.0.2)

Embedded PL/SQL

VARCHAR PseudotypeYou can use the VARCHAR datatype to declare variable-length character strings. If the VARCHAR is an … component to the actual length of the value stored in the string component. If the VARCHAR is an output host … variable, Oracle automatically sets the length component. However, to use a VARCHAR (as well as

Pro*Fortran, 9i Release 2 (9.2.0.2)

Writing a Pro*FORTRAN Program

VARCHAR VariablesVARCHAR variables handle character data based on their roles as input or output variables On Input … When you use a VARCHAR variable as an input host variable, your program must assign values to the

Pro*C/C++ Programmer's Guide, 9i Release 2 (9.2.0.2)

Datatypes and Host Variables

VARCHAR VariablesYou can use the VARCHAR pseudotype to declare variable-length character strings. When your program … more convenient to use VARCHAR host variables instead of standard C strings. The datatype name VARCHAR … can be uppercase or lowercase, but it cannot be mixed case. In this Guide, uppercase is used to emphasize that VARCHAR

Pro*Fortran, 9i Release 2 (9.2.0.2)

Writing a Pro*FORTRAN Program

VARCHAR VariablesWhen entering a PL/SQL block, Oracle automatically checks the length fields of VARCHAR host

Programmer's Guide, 9i Release 2 (9.2.0.2)

Datatypes

LONG VARCHARThe LONG VARCHAR datatype stores data from and into an Oracle LONG column. The first four bytes of … a LONG VARCHAR contain the length of the item. So, the maximum length of a stored item is 2^31-5 bytes.

Precompilers, 9i Release 2 (9.2.0.2)

Meeting Program Requirements

VARCHAR Variables; For more information about using host variables, see \"Using Host Variables\". VARCHAR Variables You … can use the VARCHAR pseudotype to declare variable-length character strings. (A pseudotype is a … datatype not native to your host language.) Recall that VARCHAR variables have a 2-byte length field … followed by a string field.

Pro*COBOL® Programmer's Guide, 9i Release 2 (9.2.0.2)

Embedded PL/SQL

VARCHAR PseudotypeRecall that you can use the VARCHAR pseudotype to declare variable-length character strings. If the … VARCHAR is an input host variable, you must tell Pro*COBOL what length to expect. Therefore, set … the length field to the actual length of the value stored in the string field. If the VARCHAR is an … output host variable, Pro*COBOL

Pro*C/C++ Programmer's Guide, 9i Release 2 (9.2.0.2)

Advanced Topics

VARCHAR Variables and PointersThe following example shows how VARCHAR host variables are declared: VARCHAR emp_name1[10 … ]; /* VARCHAR variable */ VARCHAR *emp_name2; /* pointer to VARCHAR */ On Input VARCHAR Variables When you use … a VARCHAR variable as an input host variable, your program need

Concepts and Administration, 9i Release 2 (9.2.0.2)

Creating a Logical Standby Database

VARCHAR2 and VARCHARNVARCHAR2 NUMBER DATE

Pro*C/C++ Programmer's Guide, 9i Release 2 (9.2.0.2)

Datatypes and Host Variables

VARCHAR Variable DeclarationThink of a VARCHAR as an extended C type or pre-declared struct. For example, the precompiler … expands the VARCHAR declaration VARCHAR username[20]; into the following struct with array and length … members: struct { unsigned short len; unsigned char arr[20]; } username; The advantage of using VARCHAR … variables

Pro*Fortran, 9i Release 2 (9.2.0.2)

Writing a Pro*FORTRAN Program

VARCHAR Host Variables, the dimension of the host array. VARCHAR Host Variables FORTRAN string datatypes are fixed-length … . However, Pro*FORTRAN lets you declare a variable-length string pseudotype called VARCHAR.

Pro*COBOL® Programmer's Guide, 9i Release 2 (9.2.0.2)

Datatypes and Host Variables

Declaring VARCHAR VariablesYou define a VARCHAR host variable by adding the keyword VARYING to its declaration, as shown in … definitions that use VARYING. To see how to correctly use PIC N and PIC G in VARCHAR variables, see \"Implicit … VARCHAR Group Items\" The COBOL VARYING phrase is used in PERFORM and SEARCH statements to … example. VARCHAR

Pro*C/C++ Programmer's Guide, 9i Release 2 (9.2.0.2)

Datatypes and Host Variables

VARCHAR Variable ReferencingIn SQL statements, you reference VARCHAR variables using the struct name prefixed with a colon, as … the following example shows:... int part_number; VARCHAR part_desc[40];... main() {... EXEC SQL … in part_desc.arr. In C statements, you reference VARCHAR variables using the component names, as the … set the length of the string





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