How can I compare two table structures in Oracle?

How can I compare two table structures in Oracle?

Third – If you are using Oracle SQL Developer, and you want to compare the table structure of two tables using different schemas you can do the following: Select “Tools” Select “Database Diff” Select “Source Connection”

How do you compare all records of two tables in SQL?

Compare Two Tables using UNION ALL Select * from ( Select Id_pk, col1, col2…,coln from table1, ‘Old_table’ Union all Select Id_pk, col1, col2…,coln from table2, ‘New_tbale’ ) cmpr order by Id_pk; The above query returns the all rows from both tables as old and new.

How can you tell if two tables have the same data?

1. Step 1 – Test for Duplicate Rows on TABLEA. If SELECT DISTINCT * FROM TABLEA.
2. Step 2 – Test for Duplicate Rows on TABLEB. If SELECT DISTINCT * FROM TABLEB.
3. Step 3 – INNER JOIN TABLEA to TABLEB on every column.

How can I compare two databases in Oracle?

Comparing Diffs Between Two Oracle Database Schemas

1. Select Source and Target.
2. Select a schema or several schemas (if the tool provides such possibility) for comparison.
3. Tune comparison process by checking the needed options (an optional step)
4. View comparison results.

How can I compare two columns in a table in Oracle?

Compare columns in two tables and list out column names which are different. for ex:- create table t1(c1 number(2), c2 varchar2(10)); create table t2(c1 number(2), c2 varchar2(10)); insert into t1 values(1,’a’); insert into t2 values(1,’b’); result should be column c2 is different.

How does Visual Studio compare databases?

Schema Compare feature in Visual Studio

1. From the main menu, go to the Tools -> SQL Server sub-menu -> New Schema Comparison:
2. This will load the SqlSchemaCompare query window and the first thing that needs to be done is to select source and target from their corresponding drop-down lists: