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 like SQL declare array of strings. Oracle has arrays, but the problem is, there aren’...
DO $body$ DECLARE NEW_NAME varchar(100); BEGIN NEW_NAME:='张'||'小明'; update student set name = NEW_NAME where id = 10010; END $body$; lang_name 用来解析code的程序语言的名字,如果缺省,默认为plpgsql,lang_name可以写在code前,也可以写在code后,即 1 DO code; 等效于下边的 1 DO LANGU...
3. set v1 = CAST(ARRAY[NULL] as int_array) 4. set v_iarr1 = CAST(TRIM_ARRAY(v_iarr1,4) as int_array) 5. Using ARRAY constructor inside CARDINALITY function 6. Using ARRAY constructor as IN parameter in call stmt 7. Using ARRAY constructor in CAST function on RHS of set stmt. ...
1 .变长数组(VARRAY) – 简单数组、下标自动生成(int)、不可从中间删除 -- 变长数组 TYPE type_name IS VARRAY (max_elements) OF element_datatype [ NOT NULL ]; DECLARE TYPE t_array IS VARRAY(5) OF NUMBER; m_data t_array; BEGIN m_data := t_array(0,1,2,3,4); FOR i IN 1..5 ...
数组--声明数组类型 type int_array is table of integer index by BINARY_integer; --int类型数组的变量 v_numbers int_array; 流程控制语句 代码语言:javascript 代码运行次数:0 运行 AI代码解释 1. if语句if v_id = 1 then dbms_output.put_line(v_id); elsif v_id = 2 then dbms_output.put_line...
DECLARE/* v_SQL_txt_array inst_no_type <:= inst_no_type()>; */BEGINEXECUTEIMMEDIATE'DROP TABLE IF EXISTSv_SQL_txt_array;CREATE LOCAL TEMPORARY TABLEv_SQL_txt_arrayON COMMIT PRESERVE ROWSAS SELECT *, CAST(NULL AS INT) AStyp_idx_colFROM mig_inst_no_typeWHERE FALSE';… ...
int-2,147,483,648 到 2,147,483,647-2^31 到 2^31-14 字节 smallint-32,768 到 32,767-2^15 到 2^15-12 个字节 tinyint0 到 2552^0-1 到 2^8-11 个字节 备注 int 数据类型是 SQL Server 中的主要整数数据类型 。 bigint 数据类型用于整数值可能超过 int 数据类型支持范围的情况 。
DECLARE@jsonNVARCHAR(MAX);SET@json= N'[ {"id": 2, "info": {"name": "John", "surname": "Smith"}, "age": 25}, {"id": 5, "info": {"name": "Jane", "surname": "Smith"}, "dob": "2005-11-04T12:00:00"} ]';SELECT*FROMOPENJSON(@json)WITH(idINT'strict $.id', first...
WAITFOR DELAY 支持 INT 和 SMALLINT 数据类型。 203 16 否 名称'%.*ls' 不是有效的标识符。 204 20 是 在节点 %ls 中出现规范化错误。 205 16 否 使用UNION、INTERSECT 或 EXCEPT 运算符合并的所有查询必须在其目标列表中有相同数目的表达式。 206 16 否 操作数类型冲突: %ls 与 %ls 不兼容 207 16 ...
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...