Dec 15, 2021 · Here are three ways to get information about a table’s columns in Oracle, including their data types. The DESCRIBE Command. The DESCRIBE command lists the column definitions of a table or view. The syntax goes like this: DESCRIBE [CATALOG] [ schema.] table [@ dblink] Here’s an example: DESCRIBE HR.COUNTRIES;

Mar 30, 2017 · SELECT table_name, column_name, data_type, data_length FROM all_tab_columns where table_name = 'CUSTOMER'

Oct 21, 2024 · Learn how to retrieve column data types in Oracle using PL/SQL with detailed syntax, examples, and tips for optimizing database management.

Apr 17, 2017 · For a table in oracle, I can query "all_tab_columns" and get table column information, like the data type, precision, whether or not the column is nullable. In SQL Developer or TOAD, you can click...

Feb 26, 2010 · Oracle 11.2: Get a list of the full datatype in your table: create table SOMETABLE (foo integer, bar varchar(300)); select data_type || '(' || data_length || ')' thetype from user_tab_columns where TABLE_NAME = 'SOMETABLE'; Prints: …

Jun 12, 2019 · We can just query with the table name in this view to get the column names and data types of a table in Oracle. Query to fetch the colum names and data types select * from ALL_TAB_COLUMNS where table_name='CUSTOMER' and owner = 'REVISIT_USER1';

Each value manipulated by Oracle has a data type. The data type of a value associates a fixed set of properties with the value. These properties cause Oracle to treat values of one data type differently from values of another. The data types recognized by Oracle are: [VARYING] (size) [ (precision [, scale ]) ]

Jan 1, 2022 · select column_name, data_type, data_length, data_precision, data_scale from all_tab_columns where owner = 'hr' and table_name = 'countries'; See 3 Ways to Check Column Data Type in Oracle for more info.

Apr 5, 2024 · In this article, we cover retrieving column types in SQL using three methods: SQL's Information Schema, the DESCRIBE statement, and Database GUI Tools. Each method offers insights into column types, aiding effective data management.

Mar 30, 2022 · Now, in first variable I gave '31-MAR-2022' and in second variable, I gave value '100' and in third variable I gave 'Dummy'. Now, through SQL or PLSQL I want to figure out what type of data is stored in those variables. Can anyone please help me on this. Hi Experts, I declared 3 variables as VARCHAR2 (100).