CASEWHEN(uld.ATIMEISNULL)THENGETDATE()ELSEuld.ADTIMEENDASATIME, 例子二: IsDisabled=ul.IsDisabled||l.IsDisabled 以上LINQ语句转换成SQL语句如下: CASEWHEN([ul].[IsDisabled]=1OR[l].[IsDisabled]=1)THENcast(1asbit)WHEN(NOT([ul].[IsDisabled]=1OR[l].[IsDisabled]=1))THENcast(0asbit)ENDAS...
is to remove theELSE '-'and let it implicitly get the valueNULLinstead for the second case....
SQL Case Statement When the Value Is Null We can use the CASE statement to execute a code block when dealing with null values. In addition, we can use the IS NULL and IS NOT Null operators to evaluate for NULL values and perform a specific action based on the returned value. Consider t...
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
SQL: INSERT Statement SQL: UPDATE Statement SQL: FORMAT Statement SQL: NVL Function3:46 SQL: ISNULL Function Next Lesson SQL: CASE Statement Ch 6.Removing Data in SQL Explore our library of over 88,000 lessons Search Browse Browse by subject...
+' 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...
10519 16 否 无法创建计划指南 '%.*ls',因为指定的@hints提示不能应用于由任一或两者@stmt@statement_start_offset指定的语句。 请确保提示可以应用于该语句。 10520 16 否 无法创建计划指南 '%.*ls',因为 @type 指定为 '%ls' ,并且为参数 '%ls' 指定了非 NUL...
SQL_INSERT_STATEMENT SQL_INTEGRITY SQL_KEYWORDS SQL_LIKE_ESCAPE_CLAUSE SQL_NON_NULLABLE_COLUMNS SQL_OJ_CAPABILITIES SQL_ORDER_BY_COLUMNS_IN_SELECT SQL_OUTER_JOINS SQL_PROCEDURES SQL_QUOTED_IDENTIFIER_CASE SQL_SCHEMA_USAGE SQL_SPECIAL_CHARACTERS SQL_SQL_CONFORMANCE SQL_SUBQUERIES SQL_UNIONSQL...
In the T-SQL scripting language, you can use the SQL CASE statement to evaluate a condition and return one or more result expressions. This SQL Tutorial will teach you when and how you can use CASE in T-SQL statements. Solution TheCASE expressionis used to build IF … THEN … ELSE stat...
SQL中的CASE WHEN使用 Case具有两种格式。简单Case函数和Case搜索函数。...如果使用Case函数,SQL代码如下: SELECT SUM(population), CASE country WHEN ‘中国’ THEN ‘亚洲’ WHEN ‘印度’ THEN ‘...SQL代码如下...