SAP HANA - Tables

Tables in HANA database can be accessed from HANA Studio in Catalogue tab under Schemas. New tables can be created using the two methods given below −
Using SQL editor
Using GUI option
SQL Console can be opened by selecting Schema name, in which, new table has to be created using System View SQL Editor option or by Right click on Schema name as shown below −
Once SQL Editor is opened, Schema name can be confirmed from the name written on the top of SQL Editor. New table can be created using SQL Create Table statement −
Create column Table Test1 (
   ID INTEGER,
   NAME VARCHAR(10),
   PRIMARY KEY (ID)
);
In this SQL statement, we have created a Column table “Test1”, defined data types of table and Primary Key.
Once you write Create table SQL query, click on Execute option on top of SQL editor right side. Once the statement is executed, we will get a confirmation message as shown in snapshot given below −
Statement 'Create column Table Test1 (ID INTEGER,NAME VARCHAR(10), PRIMARY KEY (ID))'
successfully executed in 13 ms 761 μs (server processing time: 12 ms 979 μs) − Rows Affected: 0
Execution statement also tells about the time taken to execute the statement. Once statement is successfully executed, right click on Table tab under Schema name in System View and refresh. New Table will be reflected in the list of tables under Schema name.
Insert statement is used to enter the data in the Table using SQL editor.
Insert into TEST1 Values (1,'ABCD')
Insert into TEST1 Values (2,'EFGH');
Click on Execute.
You can right click on Table name and use Open Data Definition to see data type of the table. Open Data Preview/Open Content to see table contents.
Another way to create a table in HANA database is by using GUI option in HANA Studio.
Right Click on Table tab under Schema → Select ‘New Table’ option as shown in snapshot given below.
Once you click on New Table → It will open a window to enter the Table name, Choose Schema name from drop down, Define Table type from drop down list: Column Store or Row Store.
Define data type as shown below. Columns can be added by clicking on + sign, Primary Key can be chosen by clicking on cell under Primary key in front of Column name, Not Null will be active by default.
Once columns are added, click on Execute.
Once you Execute (F8), Right Click on Table Tab → Refresh. New Table will be reflected in the list of tables under chosen Schema. Below Insert Option can be used to insert data in table. Select statement to see content of table.
You can right click on Table name and use Open Data Definition to see data type of the table. Open Data Preview/Open Content to see table contents.
To use tables from one Schema to create views we should provide access on the Schema to the default user who runs all the Views in HANA Modeling. This can be done by going to SQL editor and running this query −
GRANT SELECT ON SCHEMA "<SCHEMA_NAME>" TO _SYS_REPO WITH GRANT OPTION

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