when m.s_value is null then '0' else to_char(to_date(s_value, 'yyyy-MM-dd hh24:mi:ss'), 'yyyy-MM-dd hh24:mi:ss') end) into cf from jhcdr_emr_data_element m where m.de_code = 'CFJZQJSSJ' and m.file_unique_id = i
Introduction to Oracle NULLIF() function# The OracleNULLIF()function accepts two arguments. It returns a null value if the two arguments are equal. In case the arguments are not equal, theNULLIF()function returns the first argument. The following illustrates the syntax of the OracleNULLIF()funct...
Oracle will return 2. But I want to return null. Is it any way to do it? what I can think is: select decode(max(case when col_1 is null then 1 else 0), 1, max(col_1), null) from table_1. Is there any better way? Since I need to do the aggregate function twice. Thanks...
COALESCE returns the first non-null expr in the expression list. You must specify at leasttwoexpressions. If all occurrences of expr evaluate to null, then the function returns null. Oracle Database uses short-circuit evaluation. The database evaluates each expr value and determines whether it i...
Null values in the measure column are ignored. ■ The delimiter_expr designates the string that is to separate the measure values. This clause is optional and defaults to NULL. ■ The order_by_clause determines the order in which the concatenated values are returned. The function is ...
注:在存储过程(PROCEDURE)和函数(FUNCTION)中没有区别;在视图(VIEW)中只能用AS不能用IS;在游标(CURSOR)中只能用IS不能用AS。 二.输出案例 代码语言:javascript 代码运行次数:0 运行 AI代码解释 create or replace procedure myDemo01asbegin dbms_output.put_line('hello word, my name is stored procedure')...
prefixにはOracle初期化パラメータOS_AUTHENT_PREFIXの値(デフォルト値はNULL)を指定し、usernameには使用しているオペレーティング・システムのユーザー名またはタスク名を指定します。この場合、コマンドラインに別の値を指定しても、MAXOPENCURORS (10)のデフォルト値はオーバーライドできま...
gsql:Oracle_Functions.sql:1035: NOTICE: | function | sys_guid() | 1.0 | sql | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | aggregate | wm_concat(text) | 1.0 | internal | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | function | nvl2(anyelem...
(Abnormal)'); set serveroutput on declare rv RAW(32) := NULL; dt DATE := NULL; begin for v_cursor in (select ROWID RR,DATE_RAW value_hex from u_lxl.test_date_error) loop dbms_stats.convert_raw_value(v_cursor.value_hex,dt); update u_lxl.test_date_error set DATE_VAL=dt ...
ORA-17158 duration is invalid for this function 持续时间对该函数无效。 ORA-17159 metric value for end-to-end tracing is too long 要执行端对端跟踪的度量值太长。 ORA-17160 execution context id sequence number out of range 执行上下文 ID 序列号超出范围。 ORA-17161 Invalid transaction mode used ...