CASE WHEN is like an IF statement in a programming language. It is useful when we need to calculate a statistic on a certain subset of the data. In the image above, I calculate an average price for products sold in the US. I wasn’t careful with the ELSE in the CASE WHEN. In the...
public string PhoneNumberConverter(string Country, string Phone) { Phone = Phone.Replace(" ", "").Replace(")", ")-"); switch (Country) { case "USA": return "1-" + Phone; case "UK": return "44-" + Phone; default: return Phone; } }下面也是使用了这个方法将电话号码转换为国际格式...
SqlFunc.StartsWith(object thisValue, string parameterValue) //查询字符串开头模糊查询 like %@pSqlFunc.EndsWith(object thisValue, string parameterValue) 等于SqlFunc.Equals(object thisValue, object parameterValue) 等于(支持 is null 的参数)//用例:1 SqlFunc.EqualsNull(it.Name,null) //SQL: it....
In SQL, we use the LIKE operator to filter the rows from a given table based on the specific character or set of characters that a string begins with a specified prefix. A common use case is retrieving the records that match a certain pattern at the beginning of a column value. We ofte...
SIZEKILLLASTLEADINGLEAVELEAVESLEFTLEVELLIKELIMITLINEFROMTEXTLINEFROMWKBLINESLINESTRINGLINESTRINGFROMTEXT...
/** Creates LogicalPlan for a given SQL string. */ override def parsePlan(sqlText: String): LogicalPlan = parse(sqlText) { parser => val ctx = parser.singleStatement() withOrigin(ctx, Some(sqlText)) { astBuilder.visitSingleStatement(ctx) match { case plan: LogicalPlan => plan case ...
字符串转大小写函数: lower Icase \ upper \ ucase json解析函数get json_object 重复字符串函数:repeat URL解析函数:parse url 集合查找函数:find_in_set 字符串反转函数:reverse CREATE TABLE temp (id int,name string,email string,phone string) INSERT INTO temp VALUES (1, 'John Doe', 'joh...
string values have corresponding read-only properties. When the connection string is set, these properties are updated, except when an error is detected. In this case, none of the properties are updated.SqlConnectionproperties return only those settings that are contained in theConnectionString. ...
However, because Trace Flag 1211 prevents escalation in every case, even under memory pressure, we recommend that you use 1224. This helps avoid "out-of-locks" errors when many locks are being used.Note: Lock escalation to the table-level or HoBT-level granularity can also be controlled by...
However, because Trace Flag 1211 prevents escalation in every case, even under memory pressure, we recommend that you use 1224. This helps avoid "out-of-locks" errors when many locks are being used.Note: Lock escalation to the table-level or HoBT-level granularity can also be controlled b...