by itself without quotes, is a valid entry. It will be treated the same as if I had not included the target column in the list of columns in the insert statement. --From MSSQLTips.com DELETE Samples; --The word
sql case statement
sql_statement_recompile扩展事件 (XEvent) 报告语句级重新编译。 当任何类型的批处理需要语句级重新编译时,会发生此 XEvent。 这包括存储过程、触发器、即席批处理和查询。 可通过几个接口来提交批处理,这类接口包括 sp_executesql、动态 SQL、“准备”方法或“执行”方法。
CASE selector WHEN selector_value_1 THEN statements_1 WHEN selector_value_1 THEN statement_2 ... ELSE else_statements END CASE;Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) Let’s examine the syntax of the simple CASE statement in detail: 1) selector The selector is an ...
ERRCODE_QUERY_CANCELED或者Query Is Cancelled 报错:ERROR: canceling statement due to statement timeout 问题原因:客户端设置了超时时间,Query运行时间超过了超时时间。 解决方法:优化Query使其运行时间更短,或者重新设置更加合理的超时时间。超时时间设置详情请参见Query管理。
+' ON '+ mid.statement +' ('+ISNULL(mid.equality_columns,'') +CASEWHENmid.equality_columnsISNOTNULLANDmid.inequality_columnsISNOTNULLTHEN','ELSE''END+ISNULL(mid.inequality_columns,'') +')'+ISNULL(' INCLUDE ('+ mid.included_columns +')','')AScreate_index_statement, migs.*, mid...
企图使用禁止的SQL语句(PROHIBITED_SQL_STATEMENT_ATTEMPTED) 38004 不允许读取SQL数据(READING_SQL_DATA_NOT_PERMITTED) 类39 - 外部过程调用异常 39000 外部过程调用异常(EXTERNAL_ROUTINE_INVOCATION_EXCEPTION) 39001 返回了非法的SQLSTATE(INVALID_SQLSTATE_RETURNED) 39004 不允许空值(NULL_VALUE_NOT_ALLOWED) 39P01...
SELECTorder_id, customer_id,CASEWHENamount >=400THEN(amount - amount *10/100)ENDASoffer_priceFROMOrders; Run Code Here, theCASEstatement checks if theamountis greater than or equal to400. If this condition is satisfied, a new columnoffer_pricewill contain the values equal toamount - amount...
SQL: CASE Statement 1.CASE 写法如下: CASE WHEN condition1 THEN result1 WHEN condition2 THEN result2 WHEN conditionN THEN resultN ELSE result END; 解释:1)先匹配第一条,不匹配的话继续第二条,如此循环,
SQL 条件语句 (IF, CASE WHEN, IFNULL) 1、IF 1.1 表达式: IF( expr1 , expr2 , expr3 ) expr1条件,条件为true,则值是expr2 ,false,值就是expr3 示例; SELECT o.id,u.account,catagory