how to create function in c

) DECLARE @dbname varchar DECLARE @exec varchar (max)Set @exec = ' Declare cur_db cursor for select name to master.sys.databases where name like ' db[0-9]% ' ORDER by name-- Change database name Open cur_db fetch NEXT from cur_db to @dbname while @ @FETCH_STATUS = 0 Begin Set @exec = ' SELECT ' + @dbname + ' ' , name,0 from [' + @dbname + '].sys.tables where name is ' table[0-9]% ' ' ORDER by name '--Change table name insert INTO #db_table exec (@e XEC) fetch NEXT from cur_db to @dbname end clos

Java write local orc file (Hive2 API) Hive2.0 later, a new API was used to read and write orc files (https://orc.apache.org).The code in this article generates the Orc file locally using a Java program, and then loads it into the hive table.The code is as follows: Package COM.LXW1234.HIVE.ORC; Import org.apache.hadoop.conf.Configuration; Import Org.apache.hadoop.fs.FileSystem; Import Org.apache.hadoop.fs.Path; Import Org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector; Import Org.apache.h

(builder, client, httpurl); @Singleton @Provides Httpurl Providebaseurl () {return mapiurl; /** * @param builder * @param client * @param httpurl * @return * @author: Jess * @d Ate 8/30/16 1:15 PM * @description: Configuration Retrofit * * Private Retrofit Configureretrofit (Retrofit.builder Builder , okhttpclient client, Httpurl httpurl) {return builder. BaseURL (httpurl)//domain name. cl Ient (client)/set okhttp. ADDCAlladapterfactory (Rxjavacalladapterfactory.create ())//Use Rxjava. Addc

Recently, there was a requirement in the work to export CSV format files, before encountering similar requirements, finally found on Google Opencsv, and provide Java API Opencsv Address: https://code.google.com/p/opencsv/ The site provides a complete sample code, here only a CSV read and write sample code, others, please move to the official website to see. Import Java.util.Arrays; public class Csvafter {//define format of CSV file one time and use everywhere//human READABL

Android.widget.TextView; public class Mainactivity extends activity {@Override protected void onCreate (Bundle savedinstancestate) {Super.onc Reate (savedinstancestate); Setcontentview (R.layout.activity_main); Final TextView Tvresult = (TextView) Findviewbyid (R.id.tv_result); Findviewbyid (r.id.btn_obj). Setonclicklistener (New Onclicklistener () {@Override public void OnClick (View arg0) { String jsonstr = Readassetsfile ("Use

deletion table read out the Product Inventory quantity field, judge is not zero, if zero, complete the operation, from the memory to clear delete tables, if not zero, with the ROLLBACK TRANSACTION statement to roll back operation (the inventory table revert to the state before the deletion). How the Instead of triggers work : Instead of triggers are different from after triggers. After triggers are activated after the INSERT, update, and delete operations are complete, the instead OF triggers

read_single_sample (filename): # OUTput file name string to a queue Filename_queue = Tf.train.string_input_producer ([filename], num_epochs=none) # C reate a reader from file queue reader = tf. Tfrecordreader () _, Serialized_example = Reader.read (filename_queue) # get feature from serialized example F Eatures = Tf.parse_single_example (serialized_example, features={' a ': TF. Fixedlenfeature ([], tf.float32), ' B ': TF. Fixedlenfeature ([2], Tf.int

purchased for less than. E. Using OUTPUT cursor parameters The OUTPUT cursor parameter is used to pass the local cursor of the stored procedure back to the calling batch, stored procedure, or trigger. First, you create the following procedure to declare and open a cursor on the titles table: Use Pubsif EXISTS (SELECT name from sysobjects WHERE name = ' Titles_cursor ' and type = ' P ') DROP PROCEDURE TITLES_CURSORGOC reate PROCEDURE titles_cursor @

Server There are 3 ways to establish foreign key constraints in SQL Server: 1.Enterprise Manager, Tables,design table, set the properties of the table, can establish constraint, reference key; 2.Enterprise Manager, diagrams, new diagrams, establishes a two-table relationship. 3. Direct use of Transact SQL statements. Three methods need to establish a data table first. --Create TABLE Author: CREATE TABLE [dbo]. [Author] ( [ID] [bigint] not NULL, [AuthorName] [Char] (a) NULL, [Address] [Char] ()

-buffer:the mini-buffer-manually entering commands (lyxfunctions) Lyxserver:thelyxservercommunicates with LyX via Named pipes. Figuresinlyx:figures in LyX lyxforx:this page gives a overview on how to USE lyx for specific scientific fields. Feel free to add tips for your specific field ... Mathinlyx:writing Math in LyX using the math Editor. Instantpreview:instant Preview apalyx:using lyx for psychology papers linguistlyx:using LyX for linguistic Papers Human Itieslyx:using LyX for Humanities pap

statements# 导入数据库/表# source 导入的目标文件路径.sql;> source /Users/qianchia/Desktop/test.sql; Query OK, 0 rows affected (0.00 sec) Query OK, 0 rows affected (0.01 sec) ... Query OK, 3 rows affected (0.00 sec) Records: 3 Duplicates: 0 Warnings: 0 The import database is operated in MySQL command mode after the operation database has been selected. 2. DDL Table Operation statement 1) Create a table statement# 创建表# create table 表名 ( 列名称字段 数据类型(长度) 约束条件, 列名称字

Elasticsearch, you can use Elasticsearch for custom search, Kibana to combine custom search for page presentation. 3.1 Kibana installation (JDK 1.8 environment) Download Kibana 4.5.2, and unzip. 3.2 Kibana Configuration # Kibana is served by a back end server. This controls the which port to use. The port number of the Web interface port:5601 # The host to bind the server to. The host host for Web Access : "127.0.0.1" # The Elasticsearch instance to use for all your queries. Access path to

, you specify the filegroup option on the ON clause, and the index structure of the table is stored in the file that the filegroup contains: CREATE nonclustered INDEX [idx_student_stuname] on [dbo]. [student] [stuname] ASC ) on[PRIMARY] When you create a partition, you specify the filegroup in the to pose, and each partition is stored in a filegroup: reate PARTITION SCHEME scheme_name as PARTITION function_name to ([fg_name1].... > [fp_namen])

'************************************* ' Anti-XSS injection function updated to 2009-04-21 by Evio ' CHECKXSS is more secure than CHECKSTR () '************************************* Function CHECKXSS (ByVal chkstr) Dim STR STR = Chkstr If IsNull (STR) Then Checkstr = "" Exit Function End If str = Replace (str, "", "amp;") str = Replace (str, "'", "acute;") str = Replace (str, "" "", "quot;") str = Replace (str, "str = Replace (str, ">", "gt;") str = Replace (str, "/", " #47;") str = Replace (str,

: Release 11.2.0.4.0 Production on Fri Jun 15 11:31:17 2018Copyright (c) 1982, 2013, Oracle. All rights reserved.Connected to:Oracle Database 11g Enterprise Edition Release 11.2.0.4.0 - 64bit ProductionWith the Partitioning, Automatic Storage Management, OLAP, Data Miningand Real Application Testing optionsSQL> conn scott/tiger;Connected.Table OperationsCREATE TABLE DEPT (DEPTNO number (2) CONSTRAINT pk_dept PRIMARY KEY, dname VARCHAR2 (+), LOC VARCHAR2 (); C

) partition by range (b Irth, score) (partition P1 values less than (to_date (' 19900101 ', ' YYYYMMDD '), partition P2 values less than (to_date (' 19900101 ', ' YYYYMMDD '), partition P3 values less than (to_date (' 19990101 ', ' YYYYMMDD '), partition P4 values Le SS Than (To_date (' 19990101 ', ' YYYYMMDD '), and partition P5 values less than (MaxValue, MaxValue)); List Partitioning --If this is a birthday field, the data is contiguous and should be divided into partitions create table perso

following ways: CREATE INDEX indexName ON mytable(username(length)); If the Char,varchar type, length can be less than the actual length of the field; If it is a blob and text type, you must specify length.(2) Modify table structure ALTER mytable ADD INDEX [indexName] ON (username(length)) (3) When creating a table, specify directly CREATE TABLE mytable( ID INT NULL, username VARCHAR(16) NOT NULL, INDEX[indexName](username(length)) ); (4) syntax to delete an index DROP INDEX[indexName] ON m

the Data folder (typically/var/lib/mysql) under a file named {Host_name}.log.The slow query log is set later by the above method. You can display the slow query log by using the following command:Tail-f/var/log/mysql/mysql-slow.logNote: If you do not configure the slow query log file, MYSQL will save the normal log in the Data folder (typically/var/lib/mysql) under a file named {Host_name}-slow.log.Cycle logs don't forget to scroll through the logs. Otherwise, the log file may become very large

-03 3000.00 7934 MILLER Clerk 7782 1982-01-23 1300.00 34.56 1014 rows selectedNote: (1) grant Select can be swapped for INSERT, UPDATE, delete, all. (2) A column value of a data object (table or view) can also be granted to a specified user if the select authorizes a column value to the specified use to create the view and then authorizes the view to the specified user( Note: There are a lot of online use of Grant Select on EMP (ename,sal) to test, authorization, this can be successful under 9i,

the permissions of the database server settings ALTER TABLE modify the owning table permission alter TABLESPACE repair Change the permissions of the tablespace alter user to modify the permissions of the users analyze use the Analyze command to parse any tables, indexes, and clusters in the database audit any set audit options for any database object audit system allows systems to operate audit backup any T Able the right to back up any table become user to toggle the permissions of the users s