Oracle

Select To_date (: fr_date, ' Yyyy-mm-dd ') f_date,to_date (: to_date, ' Yyyy-mm-dd ') T_date,nnd,count (distinct memb_id) memb _count,count (bill_id) bill_count,sum (Bill_money) Pay_count,to_char (Round (sum (bill_money) *100/sum (SUM (Bill_money)

How to Insert date-time type data in Oracle, as shown in the data table belowCREATE TABLE T (mydate date);Sql> INSERT into T values (to_date (' 2015-1-30 12:20:33 ', ' yyyy-mm-dd HH24:MI:SS '));Sql> Select To_char (mydate, ' Yyyy-mm-dd HH24:MI:SS ')

Recently intends to look at the Oracle database access, search on the internet, it is said that in addition to ADO and OLE DB, OCI is a common way, but OCI in C-style, in C + +, there are many inconvenient places, so the eyes turned to

Test tableCREATE TABLE test_img ( ID INTEGER not NULL, NAME VARCHAR2 (+), IMAGE BLOB);Description:1. Using the JDBC Demo2. Image field stores a pictureThe program code is as follows:Import Java.io.filenotfoundexception;import

1. Copy the table structure and its data:CREATE TABLE Table_name_new as SELECT * from Table_name_old2. Copy only the table structure:CREATE TABLE Table_name_new as SELECT * from Table_name_old where 1=2;Or:CREATE TABLE table_name_new like Table_name_

1. The presence of Chinese characters in the query condition causes the Oracle query set to be empty Sql: StringBuilder sb = new StringBuilder (@ "SELECT * from Cux_ad_user a where 1=1");if (!string. IsNullOrEmpty (AD)){Sb. AppendFormat ("and lower (

I. Parameter file descriptionPFILE (initialiazation Parameter files) initializes the parameter file, which is a text file that can be viewed directly using a text editor.If the database is using the initialization parameter file Pfile, to

To view the table space status statement:Select Tablespace_name, status from Dba_tablespaces;CREATE TABLE SpaceCreate Tablespace MySpaceDataFile ' G:\app\myspace\myspace01.dbf 'Size 10m autoextend on next 5m maxsize 100m;Table Space properties are

Introduction to oracle trunc Functions 1. TRUNC (for dates) The date value intercepted by the TRUNC function for the specified element. The syntax format is as follows: TRUNC (date [, fmt]) Where: Date: A date value. Fmt date format, which is

Introduction to OSFA and data warehouse in Oracle Oracle Financial Services Application (OFSA) technical platform: includes Oracle Warehouse Builder Data Warehouse building tool, Oracle8i Database, Oracle Express multi-dimensional database, Common

Use OCCI to access the Oracle database (3) Now I am writing the code. I don't really want to write it. Let's compile it with an example. In the F: \ PProject \ oci \ 32 \ instantclient-sdk-nt-11.2.0.4.0 \ instantclient_11_2 \ sdk \ demo directory,

Oracletrunc () function usage-22. TRUNC (for number)The TRUNC function returns the processed value. Its working mechanism is very similar to that of the ROUND function, except that the function does not ROUND or select the part before or after the

Use OCCI to access the Oracle database (2) I have introduced a rough idea in the previous article. Here I mainly introduce the specific methods: Step 1 download the three packages: Step 2: compress the package (overwrite some files to some

Use OCCI to access the Oracle database (1) Recently, I want to check the access to the ORACLE database. I searched the internet for it. It is said that in addition to ADO and OLE DB, OCI is a common method, but OCI is in C-Style, in C ++, there are

Use of Oracleexp/imp Import Export tool-2 Iii. Problems with import tool imp (1) The database object already exists. Generally, tables, sequences, functions/processes, and triggers under the target data should be completely deleted before data is

Oracle Data Type-4 18. NCLOBThe character set defined by the international character set of the database can be used to store character-based data of the Unicode type only. A maximum of 4 GB of data can be stored, which is larger than the maximum

Oracle Data Type-3 9. TIMESTAMP WITH TIME ZONEIt contains all fields in the TIMESTAMP data type. In addition, it also contains two additional fields: timezone_hour and timezone_minute. This data type contains information about supported time zones.

Oracle recursive queryCreate a table and a primary foreign key CREATE TABLE SC_DISTRICT( ID NUMBER(10) NOT NULL, PARENT_ID NUMBER(10), NAME VARCHAR2(255 BYTE) NOT NULL);ALTER TABLE SC_DISTRICT ADD (

Toadfororacle: Format and configure backup FmtPlus. opt Toad for Oracle 11.6 (win7 64) File Path: C: \ Users \ Administrator \ AppData \ Roaming \ Quest Software \ Toad for Oracle \ 11.6 \ User Files \ FmtPlus. opt Remarks: I have tried it for a

How to delete the deadlock process in Oracle, and delete the lock process in oracle This example describes how to delete a deadlock process in Oracle. Share it with you for your reference. The details are as follows: Step 1: Use the following SQL