change data type sql

needs to match the string format)--------------------------------------------------------------5) when You use a SQL function or operator with an argument of a datatype other than the one it accepts,oracle converts the argument to the accepted datatype. If you call a function or procedure and so on, if the data type of the input parameter is not always the same

Recently, when checking a cashier report, I found a problem, that is, when the string value of the time date in SQL Server goes to the datetime type, something strange happens.The query is as follows:You need to check the cashier data for the 2015-07-01 day. The incoming date is: Start date ' 2015-07-01 00:00:00.000 ', End Date ' 2015-07-01 23:59:59.999 '.After t

Tags: ar sp data problem BS AD Database SQL nbspBecause the customer's previous database is SQL Server 2000, the data type of the photo field that is defined is image,On the SQL 2005 database, there is always a query in the case o

Label:In the normal development process, in the design of data, often encountered the problem of data type selection, in order to faster, more appropriate to choose the correct data type, so here is a summary. Classification

Today encountered a mistake like this, the specific error situation is as followsThe solution is as follows.Database MSSQL When comparing the size, error prompt: "The varchar value ' 24.5 ' is converted to a column of the data type int" syntax error occurs! "The type of the Analysis database design column is varchar, and the above error is reported when the searc

SQL data type The Microsoft Jet Database Engine SQL data types consist of 13 basic data types, which are defined by the Microsoft Jet Database Engine and several verified valid synonyms.The following table lists the main

Time Store the time of day, such as: 12:30pm. Note: Here, the date time has a precision of 3.33 milliseconds, while the smalldatetime has 1 accuracy.String data type: Data Type Start End Char Char The maximum length is 8000 characters.

Problem Description:Oracle uses PL/SQL developer to export data to CSV format, VARCHAR2 Type field if the value (for example, 3307830000004059) is too long, the CSV file is represented in scientific notation, even if the column is selected, click Data--. > columns, fixed width, column

1. Basic data typesNumber Typeint integer typePls_integer integer type, error occurred while generating overflowBinary_integer integer that represents the signed integerChar fixed-length, 255 characters maximumVarchar2 variable length character, max 2000 charactersLong variable length character, up to 2GBDate typeBoolean Boolean (TRUE, FALSE, null three take one)The dat