Field or attribute of a function return value, for example: func_name().field_name func_name().attribute_name Schema object owned by another schema, for example: schema_name.table_name schema_name.procedure_name() schema_name.type_name.member_name() Package object owned by another user, for example: Alias Column Syntax select t.owner as schema_name, t.table_name from sys.all_tab_columns col inner join sys.all_tables t on col.owner = t.owner and col.table_name = t.table_name where col.column_name = 'QUANTITY_BILLED' -- excluding some Oracle maintained schemas and col.owner not in ('ANONYMOUS','CTXSYS','DBSNMP','EXFSYS', 'LBACSYS', 'MDSYS', ⦠SQL aliases are used to give a table, or a column in a table, a temporary name. User can find out the database name using dual table. Enclose the table or field reference with double quotes. Document your data and gather tribal knowledge with Data Dictionary & Data Catalog, Business Glossary, and ERDs. -- Query to Get Column Names From Table in SQL Server USE [SQL Tutorial] GO SELECT COLUMN_NAME FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_NAME = N'NewCustomers'. Following the WHERE keyword is the search_condition that defines a condition that returned rows must satisfy.. The general syntax is. Letâs take a look at a few ways in each database. Other DBMS's use different characters to set off these field names. These are multiple ways to find out the database name in Oracle. How to do that? Field names with spaces must be marked off by a distinctive character used for that purpose. The UTL_INADDR package was introduced in Oracle 8.1.6 to provide a means of retrieving host names and IP addresses of remote hosts from PL/SQL. Aliases are often used to make column names more readable. For example: SELECT "cust-num" FROM PUB.customer; SELECT "_name" from ⦠I am using external tools to pull data from our Oracle 11g instance (our dbase used for JIRA) and am having an issue with getting data from 2 of the 4. It looks like you do need to use PIVOT. Type 4 : Using dual table of Oracle. The GET_HOST_ADDRESS function returns the IP address of the specified host name. List all Tables in Oracle database, owned by current Oracle user: The below query returns a list of all tables owned by the current user. Answer. You are correct. Oracle database Data Dictionary Query Toolbox. The following query will retrieve all column names from the table TUTORIALS: Select column_name from user_tab_cols where table_name =3D'TUTORIALS'; The table name must be ⦠Subscribe to our newsletter and receive the latest tips, cartoons & webinars straight to your inbox. An alias only exists for the duration of that query. See the following products ⦠SQL> select empno, ename, sal from emp; Or (if you want to see all the columns valuesYou can also give * which means all columns)SQL> select * from emp;If you want to see only employee names and their salaries then you can type the following statement SQL> select name, sal from emp; This sample demonstrates use of subquery representing a separate field. We use to prepare extract file from oracle using extract script. Query: select ora_database_name from dual; Output: Complexsql. The WHERE clause appears after the FROM clause but before the ORDER BY clause. Powered by Discourse, best viewed with JavaScript enabled. This is the reason for what was said by JROWBOTTOM. There are few tables whose name gets change every month. The SQL WHERE IN syntax. I feel like I’m close. Besides the SELECT statement, you can use the WHERE clause in the DELETE or UPDATE statement to specify which rows to update or delete.. Oracle WHERE examples. I have a number of custom fields defined but 4 of them are single select lists. In SQLServer SELECT table_name, column_name FROM INFORMATION_SCHEMA.COLUMNS For example, if I have a table named EVENT_LOG that contains eventID, eventType, eventDesc, and eventTime, then I would want to retrieve those field names from the query and nothing else. Query was executed under the Oracle9i Database version. COLUMN ALIASES are used to make column headings in your result set easier to read. B. I ended up doing a bunch of CASE statements: Not exactly graceful, I guess - it got the job done however! It supports T-SQL known as Transact-SQL (Structured Query Language) language which is the propriety Language of Microsoft and it is built on the top of ANSI SQL, which is the standard SQL language. 1. TABLE ALIASES are used to shorten your SQL to make it easier to read or when you are performing a self join (ie: listing the same table more than once in the FROM clause). Here is a view of table columns in Oracle SQL Developer: Get this interactive HTML data dictionary in minutes with Dataedo. SQL Server Questions and Answers. select v1. (A) all columns in a specific table accessible to the current user in Oracle database, (B) all columns in a specific table in Oracle database. Get Column Names From Table in SQL Server Example 1. Star Pattern by SQL in Oracle Database LISTAGG DISTINCT - Remove Duplicates - Oracle 19c; Redo Files, Redo Group and Redo Thread in Oracle Database; Oracle Database 21c is here - Innovation Release; Generate Nested JSON using SQL in Oracle Database; Parse JSON data in Oracle Database using JSON_TABLE in SQL An alias is created with the AS keyword. For each entry in table "Venues" the query counts quantity of events from table "Events" and places this number in a column named "EventsCount". This is what S.Rajaram and Michel are talking about. In this SQL example, we will show you how to Get Column names using INFORMATION_SCHEMA. Microsoft SQL Server is a relational database management system (RDBMS) developed by Microsoft. I’m still a little stuck on how to use a pivot here, even after reading. In Oracle, you have to enclose such identifiers with double quotes as in: SELECT "FIRST NAME", "LAST NAME" FROM EMPLOYEE. See the example from Oracle’s blog post below for explanation and example: https://blogs.oracle.com/sql/how-to-convert-rows-to-columns-and-back-again-with-sql-aka-pivot-and-unpivot. I hope you like this article. "Venue", ( select count (*) from "Events" e1 where e1. SELECT column-names FROM table-name WHERE column-name IN (values) "VenueNo" = v1. The FIELD_NAMES parameter is used to override the fields being in the order of the columns in the database table. Currently, this is my query: How can I achieve this with SQL? There are 3 tables: T_IN: I don't know anything about this table yet. In the ApexSQL menu, select the ApexSQL Refactor menu, click the Qualify object name command, and let the add-in to complete the refactoring of SQL script with a single click: The following are examples to illustrate this: In this example, the schema will be added to object names in a SQL query. The complexsql is the database name on which user is been connected. Although SELECT UNIQUE and SELECT DISTINCT are synonymous since the queries essentially perform the same function, DISTINCT has become a standard SQL keyword. All 4 are single selects ⦠Sorry if my question’s title is confusing. SQL> SQL> SQL> select e.deptno as "department" 2 , count(e.empno) as "number of employees" 3 from employees e 4 group by e.deptno; department number of employees ----- ----- 30 3 20 3 40 2 10 2 SQL> SQL> SQL> drop table employees; Table dropped. The following example shows you how to get a list from an SQL SELECT query which is located in a string and dynamically openend into a REF CURSOR. 1. column_id - sequence number of the column as created 2. schema_name - table owner, schema name 3. table_name - table name 4. column_name - column name 5. data_type - column datatype 6. data_length - column length in bytes 7. data_precision - length: 1. for NUMBER - decimal digits, 2. for FLOAT - binary digits; 8. data_scale - digits to right of decimal point in a number 9. nullable - flag indicating if column allows nulls values Drag and Drop from the Tree. You can query any of these views to list all tables in Oracle. Click vs type, do whatever is faster for you. SQL: How to select field values and return them as column names in result. Recipe #1 - Oracle 11g only Since Oracle 11g there's a method called DBMS_SQL.TO_CURSOR_NUMBER(l_rcursor) which you can use to cast a ref cursor into a cursor and use dbms_sql.describe_columns. 2) it is possible to parse a query and get the column names from the query. SELECT UNIQUE: one might say that there is something âdistinctlyâ different about that statement (pun intended). If you have privilege on dba_tab_columns and dba_tables. Currently, this is my query: SELECT week, activityType, SUM (elapsedTime) AS activityTotalTime FROM activity WHERE year=2017 AND activityType IN ('rockclimbing', 'hike', 'run') GROUP BY week, activityType; This produces a result like: ⦠I like this one a lot, the order in which I select the columns in the tree is the ⦠It’ll be easier to look at my code/example below. 1) it is not possible to get column names from a cursor. Use a SELECT statement or subquery to retrieve data from one or more tables, object tables, views, object views, or materialized viewsFor example to retrieve all rows from emp table. I need to query the database to get the column names, not to be confused with data in the table. With Oracle database you can use a sql query to retrieve columns names of a table. UNIQUE and DISTINCT are reserved Oracle keywords. SELECT COLUMN_NAME FROM ALL_COL_COMMENTS WHERE TABLE_NAME = âPS_JOBâ; /* Sort Field by order in table*/ SELECT * FROM DBA_TAB_COLS WHERE TABLE_NAME =âPS_JOBâ ORDER by COLUMN_ID SELECT COLUMN_NAME FROM DBA_TAB_COLS WHERE TABLE_NAME =âPS_JOBâ ORDER by COLUMN_ID Using the following SQL one can find tables that contain a column name. There are two ways to workaround this and reference a table or field name that contains dashes/hyphens or starts with an underscore character. I am trying to sum each activity stored in my DB by each of their elapsed time (field value) and then group them by week. When you query data from a table, Oracle uses the column names of the table for displaying the column heading. Show Tables in Oracle SQL. I feel like Iâm close. select attribute_id from user_preference where user_id = X (or bubble up to selecting the actual attribute name from the attribute table based on this) and display data from the transaction table where column names, not values, are equal to the values returned as the list of attribute names. Oracle ALIASES can be used to create a temporary name for columns or tables. (By default, SQL*Loader Express uses the table column definitions found in the ALL_TAB_COLUMNS view to determine the input field order and data types.) In your SQL tool of choice take the following command: select table_name from all_tab_columns where column_name = 'PICK_COLUMN'; If youâve got DBA privileges, you can try this command instead: Oracle has not exposed this interface to-date as far as I know anyway. For example, the following statement returns the first name and last name of employees: SELECT first_name, last_name FROM employees ORDER BY first_name; In this example, first_name and last_name column names were quite clear. Oracle has several different built-in views that you can query to find the data you need. Need to handle these table names dynamically. Thanks for your link. I am trying to sum each activity stored in my DB by each of their elapsed time (field value) and then group them by week. SQL Aliases. Microsoft Access uses back ticks. Identifying Host Names and IP Addresses in SQL and PL/SQL ; UTL_INADDR. SELECT table_name FROM user_tables; List all Tables in Oracle database, accessed by Current user: The below query lists all tables in oracle which are accessible by the current user. Sometimes there is a command, others have a SELECT query from the data dictionary. Is this a case for a pivot? SELECT customer_name, count(*) cnt from dtb_customer group by customer_name having count(*) > 1 Dave SQL> I have a problem with dynamic field names in a cursor.