If we wish to remove the ‘New York’ record from the table, we can run a query as shown: select first_name, last_name, replace(state, 'New York', '') as state from users; The above query should remove the string ‘New York’ from the table. The resulting set is as shown: Not...
3. Using MySQL In MySQL, we can use either the LEFT() or the SUBSTRING() functions to remove characters from a string. The LEFT() function enables us to extract a substring starting from the left side of the string with a length up to a specified number of characters. So, we remove...
SELECTname,SUBSTRING(name,1,1)ASInitial,SUBSTRING(name,3,2)ASThirdAndFourthCharactersFROMsys.databasesWHEREdatabase_id <5; 结果集如下。 name初始ThirdAndFourthCharacters mastermst tempdbtmp modelmde msdbmdb 若要显示字符串常量abcdef的第二、第三和第四个字符,请使用以下查询。
CREATE FUNCTION dbo.ufn_FindReports (@InEmpID INT) RETURNS @retFindReports TABLE ( EmployeeID INT PRIMARY KEY NOT NULL, FirstName NVARCHAR(255) NOT NULL, LastName NVARCHAR(255) NOT NULL, JobTitle NVARCHAR(50) NOT NULL, RecursionLevel INT NOT NULL ) --Returns a result set that lists all...
The string can have a maximum of 255 characters. NAME = { backup_set_name | @backup_set_var } Specifies the name of the backup set. Names can have a maximum of 128 characters. If NAME is not specified, it is blank. { EXPIREDATE ='date' | RETAINDAYS = days } Specifies when the ...
endsWith('select * from ')) { // select * from 提示指定数据库的表名 suggestions = this.getTableSuggest(this.database) } else if (lastToken === 'where') { const lastToken2 = tokens[tokens.length - 2] const lastToken3 = tokens[tokens.length - 3] const lastToken4 = tokens[tokens...
Create a percentage from two SUM values Create a query to remove last two characters of a string Create a view and change the data types of some variables Create a writable view in SQL DB create an index on just the date part of a datetime field Create Database Failed - Primary file mu...
CLEANROOM_INVALID_SHARED_DATA_OBJECT_NAME、COLUMN_MASKS_MULTI_PART_TARGET_COLUMN_NAME、COLUMN_MASKS_MULTI_PART_USING_COLUMN_NAME、DELTA_INVALID_CHARACTERS_IN_COLUMN_NAME、DELTA_INVALID_CHARACTERS_IN_COLUMN_NAMES、DELTA_INVALID_COLUMN_NAMES_WHEN_REMOVING_COLUMN_MAPPING、DELTA_NESTED_FIELDS_NEED_RENAME、...
For string data types, useXXXX(or fewer) if the size of the field is fewer than 4 characters (char,nchar,varchar,nvarchar,text,ntext). For numeric data types use a zero value (bigint,bit,decimal,int,money,numeric,smallint,smallmoney,tinyint,float,real). ...
trim(TRAILING trimStr FROM str) - Remove the trailing trimStr characters from str. Arguments: str - a string expression str - a string expressiontrimStr - the trim string characters to trim, the default value is a single spaceBOTH, FROM - these are keywords to specify trimming string charac...