/********************************************** timestamp conversion (seconds) **********************************************/--normal time conversion to timestamp (seconds)SELECT DATEDIFF(SS,'1970-1-1 00:00:00',GETDATE()) --millisecond timestamp to normal time (seconds)SELECT DATEADD(SS,1447842393,'1970-1-1 00:00:00')/********************************************** Timestamp conversion (ms) **********************************************/--normal time conversion to timestamp (MS)DECLARE @ADATE DA
in a text file, the rows and columns must be distinguished by a certain format, and the delimiters are indicated in hive. Hive uses a number of characters that are seldom present by default, and these characters generally do not appear as content in the record. The default row and column separators for Hive are shown in the following table.
Separators
Description
\ n
For a text file, each line is a re
Java. SQL. SQLException: ORA-01861: Text and format strings do not match,
1. Error description
Java. SQL. SQLException: ORA-01861: Text and format strings do not match
2. Error cause
When the field name is statis_date, the Data Type stored in the database is Date, while when splicing an
Label:When the amount of text data is relatively large, the input of a strip is basically impossible, and writing a program to relay it is also very troublesome, fortunately SQL Server provides a relatively concise method.Bulk Insert table name from ' C + + your text file. txt ' with (fieldterminator = ' What symbol to split the data ', rowterminator= ' with what symbol plus \ n End ') --\n is the meaning of a carriage return, is the carriage return
In reality, there is a computing method that computes time as a floating point number to save, in this case, you need to convert it to a readable Date Format PLSQL digital date -- convert the date time expressed in decimal form to the form of functionfmt_time (p_daysinnumber) returnvarchar2asl_da
In reality, there is a computing method that computes time as a floating point number to save, at this time, you need to convert it to a readable Date
Speaking of date, this is a complicated format for many people. At least I have been a little scared about it. Every time the Code involves a date, it is very strange.
Summarize some SQL Date and Time formats:
Format name
Date Format
Date example
Time Format
DateTime is used in C. toString (yyyy-MM-dd), DateTime. toString (MMddyyyy), a date-to-String Conversion method, is useless in SQLserver, and thus a FUNCTION is written. dateTime in. net. the ToString (formatprovide) method is similar, but only the date part is implemented.
DateTime is used in C. toString ("yyyy-MM-dd"), DateTime. toString ("MM/dd/yyyy"), a date-to-String Conversion method, is useless in SQL server. Therefore, a FUNCTION is written wi
We often use a variety of date formats for some purpose. Of course, we can use string operations to construct various date formats, but why are there any ready-made functions?
The default datetime format of the Chinese version of SQL Server is yyyy-mm-dd thh: mm: Ss. Mmm.
For example:
Select getdate ()
11:06:08. 177
I sorted out the date format conver
The default datetime format of the Chinese version of SQL Server is yyyy-mm-dd thh: mm: Ss. Mmm.For example:Select getdate ()11:06:08. 177I sorted out the date format conversion methods that may be frequently used in SQL Server:Example:Select convert (varchar, getdate (), 120)11:06:08
Select Replace (replace (convert (
For example, the results of an SQL query in PL/SQL are as follows:
Leaf
Wei
Hong
Sun
He
... Is omitted later
To generate the dictionary format:
{1, "Ye" },{ 2, "wei" },{ 3, "Hong" },{ 4, "Sun" },{ 5, "He "}...
First, copy the columns of PL/SQL, put them in a string, and cycle the char of this string. Because t
outstream. Charset = Outcode OutStream. Open ' Write to output file OutStream. WRITETEXT content OutStream. SaveToFile outFile, 2 ' adsavecreateoverwrite outstream.flush ' Close output file OutStream. Close Set OutStream = Nothing End Function ' ******************************************************************* ' Function: Getdirectory get current directory ' parameter meaning: ' ******************************************************************* function Getdirectory () Dim WshShell set Wshsh
Recently you need to verify that a field in the Data warehouse is converted to a date format, such as timestamp format ' 2016-05-03 23:21:35.0 ',However, DB2 does not support regexp_like (matching) functions, so you need to rethink other options.The final use of the most common like to fuzzy matching, although less than the regular match so accurate, but also enough.Ideas:An underscore represents a characte
How does python quickly translate JSON-formatted data into data in a given format? or convert it to a SQL file?
The following example converts a JSON-formatted data into a #_#-segmented text data and can also be used to generate a SQL file.
[Root@bogon tutorial]# VI json2txt.py #-*-coding:utf-8-*-import jsondata = []with open ('./tencent_test.json ') as f:
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.