![]() String: performs operations on character strings, binary data or expressions.Mathematical: performs operations on numeric data.Date: displays information about dates and times.Conversion: transforms one data type to another.There are many built-in functions in SQL Server such as: (SELECT title_id FROM Books WHERE type = ‘mod_cook’) Built-in Functions This example uses INSERT to add a record to the publisher’s Authors table. An error message is displayed and the row is rejected if the column is defined as NOT NULL and no default exists.NULL is entered if the column allows NULLs and no default value exists for the column.A default value is entered if the column has a DEFAULT constraint, if a default is bound to the column, or if a default is bound to the underlying user-defined data type.When you specify values for only some of the columns in the column_list, one of three things can happen to the columns that have no values: If an INSERT statement violates a constraint, default or rule, or if it is the wrong data type, the statement fails and SQL Server displays an error message.These strings are truncated to a single space. All trailing spaces are removed from data inserted into varchar columns, except in strings that contain only spaces.All char columns are right-padded to the defined length.Inserting an empty string (‘ ‘) into a varchar or text column inserts a single space.When inserting rows with the INSERT statement, these rules apply: INSERT Table_name | view name ĭEFAULT VALUES | values_list | select statement We can use the SELECT statement to generate an employee phone list from the Employees table as follows: It is processed according to the following sequence: ![]() The SELECT statement, or command, allows the user to extract data from tables, based on specific criteria. ![]() Lower case letters are used to represent user-defined words. ![]() ![]() Upper case letters are used to represent reserved words.If a clause has several parts, they should appear on separate lines and be indented under the start of the clause to show the relationship.The beginning of each clause should line up with the beginning of other clauses.Each clause in a statement should begin on a new line.In this chapter, we will describe how to use the SELECT, INSERT, UPDATE, and DELETE SQL DML command statements, defined below. The SQL data manipulation language (DML) is used to query and modify database data. This SQL keywords reference contains the reserved words in SQL.Chapter 16 SQL Data Manipulation Language String Functions: ASCII CHAR_LENGTH CHARACTER_LENGTH CONCAT CONCAT_WS FIELD FIND_IN_SET FORMAT INSERT INSTR LCASE LEFT LENGTH LOCATE LOWER LPAD LTRIM MID POSITION REPEAT REPLACE REVERSE RIGHT RPAD RTRIM SPACE STRCMP SUBSTR SUBSTRING SUBSTRING_INDEX TRIM UCASE UPPER Numeric Functions: ABS ACOS ASIN ATAN ATAN2 AVG CEIL CEILING COS COT COUNT DEGREES DIV EXP FLOOR GREATEST LEAST LN LOG LOG10 LOG2 MAX MIN MOD PI POW POWER RADIANS RAND ROUND SIGN SIN SQRT SUM TAN TRUNCATE Date Functions: ADDDATE ADDTIME CURDATE CURRENT_DATE CURRENT_TIME CURRENT_TIMESTAMP CURTIME DATE DATEDIFF DATE_ADD DATE_FORMAT DATE_SUB DAY DAYNAME DAYOFMONTH DAYOFWEEK DAYOFYEAR EXTRACT FROM_DAYS HOUR LAST_DAY LOCALTIME LOCALTIMESTAMP MAKEDATE MAKETIME MICROSECOND MINUTE MONTH MONTHNAME NOW PERIOD_ADD PERIOD_DIFF QUARTER SECOND SEC_TO_TIME STR_TO_DATE SUBDATE SUBTIME SYSDATE TIME TIME_FORMAT TIME_TO_SEC TIMEDIFF TIMESTAMP TO_DAYS WEEK WEEKDAY WEEKOFYEAR YEAR YEARWEEK Advanced Functions: BIN BINARY CASE CAST COALESCE CONNECTION_ID CONV CONVERT CURRENT_USER DATABASE IF IFNULL ISNULL LAST_INSERT_ID NULLIF SESSION_USER SYSTEM_USER USER VERSION SQL Server Functions ![]()
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