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MySQL Date time function encyclopedia1. DAYOFWEEK (date)The return date is the day of the week (1= Sunday, 2 = Monday,...... 7= Saturday, ODBC Standard)Mysql> Select DAYOFWEEK (' 1998-02-03 ');32. WEEKDAY (date)The return date is the day of the week

Mysql> SELECT something from Tbl_name WHERE To_days (now ()) –to_days (date_col) DayOfWeek (date) Returns the week index of date (1 = Sunday, 2 = Monday, ...). 7 = Saturday). Index values are compliant with ODBC standards. mysql> SELECT DayOfWeek ('

For a description of the range of values owned by each type and the valid format for the specified date and time value, see 7.3.6 Date and Time type. Here is an example of using a date function. The following query selects all records and its

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For a description of the range of values owned by each type and the valid format for the specified date and time value, see 7.3.6 Date and Time type. Here is an example of using a date function. The following query selects all records and its

The following query selects the records for all date_col values within the last 30 days. Mysql> SELECT something from Tbl_name WHERE To_days (now ())-To_days (Date_col) DayOfWeek (date) Returns the week index of date (1 = Sunday, 2 = Monday, ...). 7

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MySQL date and time function large Summary here is an example of using a date function. The following query selects all records whose Date_col value is within the last 30 days: MySQL select something from table WHERE to_days (now ())-to_days

About the fields in MySQL Type value Type description Mysql_type_tiny tinyint field Mysql_type_short smallint field Mysql_type_long

DAYOFWEEK (date)The return date is the day of the week (1= Sunday, 2 = Monday,...... 7= Saturday, ODBC Standard)Mysql> Select DAYOFWEEK (' 1998-02-03 ');3WEEKDAY (date)The return date is the day of the week (0= Monday, 1 = Tuesday,...... 6=

DAYOFWEEK (date)The return date is the day of the week (1= Sunday, 2 = Monday,...... 7= Saturday, ODBC Standard)Mysql> Select DAYOFWEEK (' 1998-02-03 ');3WEEKDAY (date)The return date is the day of the week (0= Monday, 1 = Tuesday,...... 6=

MySQL supports a large number of column types, which can be divided into 3 categories: numeric types, date and time types, and string (character) types. This section first gives an overview of the available types, summarizes the storage requirements

Start by counting all the tables to seeNumber Type Column type The amount of storage needed TINYINT 1 bytes SMALLINT 2 bytes MEDIUMINT 3 bytes INT 4 bytes

(Transferred from Http://3y.uu456.com/bp-f088f739376baf1ffc4fad40-1.html)MySQL supports a large number of column types, which can be divided into 3 categories: numeric type, date and time type, string (character) type.This section first gives an

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Collect the Compare full MySQL date and MySQL time function Date_format (Date,format) Formats the date value based on the format string. The following modifiers can be used in the format string:%m month name (January ...). December) %w Week name

(1) ABS (), absolute value or complex number of modules 1 Print (ABS (-6)) #>>>>6 (2) All () accepts an iterator that returns true if all the elements of the iterator are true, otherwise returns false 1 Print (All ([1,0,3,6])) #>>>>false (3) any

For operations on string positions, the first position is marked as 1. ASCII (str) Returns the ASCII code value of the leftmost character of the string str. If Str is an empty string, returns 0. If STR is NULL, returns NULL. Mysql> Select ASCII (' 2

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Here is an example of using a date function. The following query selects all records and its date_col value is within the last 30 days: Mysql> SELECT something from table WHERE To_days (now ())-To_days (Date_col) DayOfWeek (date) Returns the week