CREATE[ORREPLACE]FUNCTIONname([[argmode][argname]argtype[{DEFAULT|=}default_expr][,...]])[RETURNSrettype|RETURNSTABLE(column_name column_type[,...])]{LANGUAGElang_name|TRANSFORM{FORTYPEtype_name}[,...]|WINDOW|IMMUTABLE|STABLE|VOLATILE|[NOT]LEAKPROOF|CALLEDONNULLINPUT|RETURNSNULLONNULLINPUT|...
return MAKE_SQLSTATE(condname[0], condname[1], condname[2], condname[3], condname[4]); // 如果给的是字符串:在exception_label_map中查询后返回SQLSTATE for (i = 0; exception_label_map[i].label != NULL; i++) { if (strcmp(condname, exception_label_map[i].label) == 0) retur...
RETURN NULL; END; $$ LANGUAGE plpgsql; 创建函数 postgres=# \i log_history_insert_trigger.sql 重新插入数据 postgres=# insert into log_history values(1,'2021-09-01',1);INSERT 0 1 postgres=# select * from log_history;id| logdate | num ---+---+--- 1 | 2021-09-01 | 1 (1 row...
Bitmapset*prune_append_rel_partitions(RelOptInfo*rel){List*clauses=rel->baserestrictinfo;List*pruning_steps;GeneratePruningStepsContextgcontext;if(rel->nparts==0)returnNULL;/* If there are no partitions, return the empty set */if(!enable_partition_pruning||clauses==NIL)returnbms_add_range(...
return (结果变量); end 函数名; 1. 2. 3. 4. 2.例子:计算指定员工的年薪 create or replace function f_yearsal(eno emp.empno%type)return number is res number(10); begin select sal*12+nvl(comm,0) into res from emp where empno=eno; ...
- 1); while (low <= high) { const ScanKeyword *middle; int difference; middle = low + (high - low) / 2; difference = strcmp(middle->name, word); if (difference == 0) return middle; else if (difference < 0) low = middle + 1; else high = middle - 1; } return NULL; }...
RETURN; END; oracle存储过程语法 1 、判断语句: if 比较式 then begin end; end if; create or replace procedure test(x in number) is begin ifx >0 then begin x := 0 - x; end; end if; ifx = 0 then begin x: = 1; end;
}/**@param{string}id@param{object}data*/asyncfunctionupdateUserInfo(id, data){letcount =awaitpqorm.model('user').where({id: id}).update(data)if(count >0)returntruereturnfalse} 插入数据 letpqorm = initORM(dbconfig); ;(async() =>{lettm =Date.now();awaitpqorm.model('log').insert...
代码运行次数:0 运行 AI代码解释 if(!IS_HIGHBIT_SET(*mbstr)){if(*mbstr!='\0'){mb_len++;mbstr++;len--;continue;}if(noError)return-1;report_invalid_encoding(encoding,mbstr,len);} 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ...
return parsetree; } 输入:为输入的查询字符串定义一个指向字符常数的指针。 功能:扫描查询字符串并返回相应值。 返回值:若无语法错误,则建立解析树(Parser Tree),并将查询语句存储在该解析树中;否则,向解析器返回空指针(NIL)。 所调用函数:pool_memory_create(); scanner_init(); parser_init(); base_yypar...