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Anonymous users2024-02-05Let's say the textbox is named textbox and the string of numbers to be displayed is strfloat:
This is to take two decimal places, of course, if strfloat is empty or not a numeric string, you need to do some exception handling.
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Anonymous users2024-02-04vbfloatnumber =
int( floatnumber * 100) 100 text box displays.
Multiply by 100, round up, and then divide by 100.
Other languages have similar algorithms.
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Anonymous users2024-02-031. Change the type to numeric in the SQL database, set the decimal place to 22, and convert it in the SQL statement: select convert(field, numeric(18,2)) as field.
3. Set the properties of the bound column of DataFormatString to Structured Query Language (SQL), a special-purpose programming language, a database query and programming language, which is used to access data and query, update and manage relational database systems.
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Anonymous users2024-02-02When designing the database, set the type of this field to numeric(10,2); The following 2 is the number of decimal places remained.
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Anonymous users2024-02-01alter table tablename modify column number(10,2);10 indicates your total number, and you can modify it accordingly.
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Anonymous users2024-01-31select *,round(convert(float,outoknum) convert(float,totnum),2)as pass rate from Table A where....Rounded to 2 decimal places.
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Anonymous users2024-01-30What type do you want to convert to? If you convert it to a string, you can prepare a spine for a good reputation.
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Anonymous users2024-01-29select round(，2) from product ;Two decimal places to the right of the decimal point are left and rounded back.
Answer: select round( from dual; Round.
select trunk(,2) from dual;Directly cut two digits without rounding.
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Anonymous users2024-01-28You can judge whether it is an input number in the interface, and this can be used in a regular to ensure that it is a number.
After that you can add it double db = ; if(db <= 1 &&db >=
If you feel unsafe, you can put this sentence in try{}.
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Anonymous users2024-01-27Define a numeric variable that holds the value of the text box (converts the value of the text box to decimal).
decimal dc=;
private void button_click(object sender, eventargs e)}
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Anonymous users2024-01-26Use the convert function in SQL to convert to the specified format.
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Anonymous users2024-01-25You're on the page and it's time to switch down.
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Anonymous users2024-01-24Such: float x;
x = ;The value of the floating-point variable x is extracted from the contents of textbox1.
You can make an information query system, if you haven't done it before, it is recommended to use ASP to write it first, this is relatively simple, even people who do not have a basic knowledge of network programming can get started in a short period of time. The written web program can be called on the network, and different permissions can be set for different users. In this way, you can achieve the function you want, but this is only the basic, and you should learn more deeply to achieve more complete functions. >>>More
The database is generally composed of many tables, for example, the school builds a database, which can build a student table (including the student's name, age, student number, class, date of birth), a teacher table (including the teacher's name, age, teaching class, teaching category), a report sheet (including the student's student number, and the grades of each subject), etc. These are the ways in which the files are stored in the database, and try to make sure that the items in a table are closely related and have the same attributes, if this condition cannot be met, a table must be built (the redundancy of the built table has 4 levels). In order to meet the user's query needs, we also need to make a number of views, for example, you can make a view of his items have the name of the student, age, grades of each subject, and the teacher of each subject, etc., we can also export new items according to the existing items, for the purpose of simplicity, for example, the view can add an average grade, we add different permissions and roles to each view, and provide it to different people to query to protect the security of the database. >>>More
First: you are lazy and push everything to someone else.
Second: There are no bonus points for your question. >>>More
select ,from emp e left jion dept don ;
Left Company. The left link is, the left side prevails, and the right side is useless to make up for it. >>>More
When changes to data affect the index, the information in the index can be spread out across the database. Reindexing reorganizes the storage of indexed data (and in the case of clustered indexes, table data) and defragments it. This improves disk performance by reducing the number of page reads required to obtain the requested data. >>>More