WebWhen an ORA-01422 is triggered, your SELECT INTO statement is retrieving multiple rows of data or none at all. If it is returning multiple, the predefined exception TOO_MANY_ROWS will be raised, and for no returns the PL/SQL will raise NO_DATA_FOUND. Because the SELECT INTO statement in its default setting is designed to retrieve only one row ... WebOct 9, 2015 · How to determine size of a field having LONG datatype? ... (text) * ERROR at line 1: ORA-00932: inconsistent datatypes: expected CHAR got LONG For a one-off requirement, we can simply clone the table converting to LOB ... LENGTH(X) ----- 41009 1 row selected. rajesh@ORA11G> WITH xml AS ( 2 SELECT XMLTYPE( 3 …
sql - How to cast LONG to VARCHAR2 inline - Stack …
WebORA-00997: 非法使用 LONG 数据类型. 这是对 LONG 数据类型使用的限制.您不能创建具有 LONG 属性的对象类型. SQL> CREATE TABLE t AS SELECT data_default FROM user_tab_cols; CREATE TABLE t AS SELECT data_default FROM user_tab_cols * ERROR at line 1: ORA-00997: illegal use of LONG datatype SQL> WebNov 28, 2024 · The solution is to convert the LONG column into a CLOB column by TO_LOB function in a new concrete table. 1. Create Table as Select. We use CTAS to create the … thermopile low voltage water heater
Oracle long 类型转 varchar2 - CSDN博客
Web说到软解析(soft prase)和硬解析(hard prase),就不能不说一下Oracle对sql的处理过程。当你发出一条sql语句交付Oracle,在执行和获取结果前,Oracle对此sql将进行几个步骤的处理过程: The best way to deal with long is to: 1) Create a temporary table with a lob type (eg. CLOB). 2) Use the only allowed syntax by oracle: "TO_LOB converts LONG or LONG RAW values in the column long_column to LOB values. You can apply this function only to a LONG or LONG RAW column, and only in the select list of a subquery in an INSERT statement." WebAug 2, 2024 · select long_col into a from emp where empno = p_emp_no; return a; exception when others then return 'Error occurred, unable to cast long to varchar !'; end; select substr (get_long_varchar2 (empno)1,3999) from emp; Which will return the expected results only If long column is having less than 32767. toy tongs