Processing an array of values inside a procedure/ function is a common requirement. The question arises quite often, especially if you communicate with Oracle specialists. For instance, they may seek something
DECLARE@mybin1 VARBINARY(5), @mybin2 VARBINARY(5);SET@mybin1 =0xFF;SET@mybin2 =0xA5;-- No CONVERT or CAST function is required because this example-- concatenates two binary strings.SELECT@mybin1 + @mybin2; 在此示例中,需要一个或CAST一个CONVERT函数,因为此示例连接两个二进制字符串和...
DECLARE @mybin1 VARBINARY(5), @mybin2 VARBINARY(5); SET @mybin1 = 0xFF; SET @mybin2 = 0xA5; -- No CONVERT or CAST function is required because this example -- concatenates two binary strings. SELECT @mybin1 + @mybin2; 在此範例中,需要 或 CAST 函式,CONVERT因為此範例會串連兩...
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Declare your host-variable arrays as small as possible, or indicate that the size of your host-variable arrays are the size of 'n' in your descriptor. This avoids sending large numbers of host-variable-array entries that will not be used to the server. ...
Define, allocate, and release cursors (DECLARE CURSOR, OPEN, CLOSE) Specify a database and connect to Oracle (DECLARE DATABASE, CONNECT) Assign variable names (DECLARE STATEMENT) Initialize descriptors (DESCRIBE) Specify how error and warning conditions are handled (WHENEVER) Parse and run SQL ...
DECLARE@CheckDateASDATETIME;SET@CheckDate =GETDATE();EXECUTEdbo.uspGetWhereUsedProductID819, @CheckDate; GO The following example shows howEXECUTEhandles dynamically built strings that contain variables. This example creates thetables_cursorcursor to hold a list of all user-defined tables in theAdventu...
Params;// Declare an array of DBBINDING structures, one for each parameter in the command.DBBINDING acDBBinding[nParams]; DBBINDSTATUS acDBBindStatus[nParams];// The following buffer is used to store parameter values.typedefstructtagSPROCPARAMS{longlReturnValue;longoutParam;longinParam; } SPROC...
DECLARE TYPE NumTabTyp IS TABLE OF NUMBER INDEX BY BINARY_INTEGER; ... BEGIN ... END; 次の例に示すように、NumTabTyp型を定義すると、その型のPL/SQL表を宣言できます。 コピー num_tab NumTabTyp; 識別子num_tabは、PL/SQL表全体を表しています。 配列に似た構文を使用してPL/SQL...
Type grades IS VARRAY(5) OF INTEGER; 1. 2. 现在让无涯教程通过一些示例来理解这个概念- Varray示例1 以下程序说明了varrays的用法- DECLARE type namesarray IS VARRAY(5) OF VARCHAR2(10); type grades IS VARRAY(5) OF INTEGER; names namesarray; ...