In this article, we’ll explain what a CASE statement is, why it’s essential and explore various use cases to help you harness its potential. Let’s get started! What is a CASE Statement? The Case Statement in SQL is a conditional expression that introduces a decision making logic into ...
DateTime.MinValue : uld.ATime 以上LINQ语句转换成SQL语句如下: 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].[...
We can add as manyWHEN ... THENconditions as required in theCASEstatement. For example, -- multiple CASE conditions in SQLSELECTcustomer_id, first_name,CASEWHENcountry ='USA'THEN'United States of America'WHENcountry ='UK'THEN'United Kingdom'ENDAScountry_nameFROMCustomers; Run Code Here, the...
Access Code - DELETE Statement with DISTINCTROW and T-SQL Access Now() vs. T-SQL GETDATE() ? ADD and SUBTRACT depending on the condition is CASE STATEMENT ADD COLUMN to variable table? Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a lar...
SQL Server Reporting Services, Power View Index .5in is not a valid unit designator. Valid unit designators are in, mm, cm, pt, pc. 'No such host is known' error when configuring Reporting database 'Oracle' data extension not registered 'Return' statement in a Function,Get,or Operator...
When you piece all three of those columns for oneSELECT STATEMENTand throw in the rest of the necessary pieces to build a SQL query, it all take shape below. Then after adding aPIVOT DATAstep into the Data Pipeline, we’ll get a table properly arranged in the proper format to set up ...
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...
SQL---CASE WHEN条件表达式(conditional statement) CASE表达式是用来判断条件的,条件成立时返回某个值,条件不成立时返回另一个值。 语法: CASEWHENComparsionConditionTHENresultWHENComparsionConditionTHENresultELSEotherEND (注:各分支返回的数据类型需一致。)...
, IN v_str varchar(30) ) BEGIN CASE n_str WHEN n_str = 'profileStatus' THEN UPDATE tbl_contact SET status = 'A' WHERE id = id; -- The above statement updates the entire table instead of the right row WHEN n_str = 'phoneNumberMobile' THEN ...
, IN v_str varchar(30) ) BEGIN CASE n_str WHEN n_str = 'profileStatus' THEN UPDATE tbl_contact SET status = 'A' WHERE id = id; -- The above statement updates the entire table instead of the right row WHEN n_str = 'phoneNumberMobile' THEN ...