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- HOW TO CREATE A TABLE AND SET SCALE IN ORACLE APEX SQL GENERATOR
- HOW TO CREATE A TABLE AND SET SCALE IN ORACLE APEX SQL PORTABLE
- HOW TO CREATE A TABLE AND SET SCALE IN ORACLE APEX SQL DOWNLOAD
See "Configuring Report Printing" in Oracle Application Express Administration Guide.ĭisplays a report of the data in the current table. Please note, this option must have a Report Server configured at the instance level.
HOW TO CREATE A TABLE AND SET SCALE IN ORACLE APEX SQL PORTABLE
To print the data in a portable document format (.pdf) file, click the Print link.
HOW TO CREATE A TABLE AND SET SCALE IN ORACLE APEX SQL DOWNLOAD
To export the data as a comma-delimited file (.csv) file, click the Download link. Additionally, you can drop, rename, copy, or truncate the table only if the referencing table has no records and create a lookup table. While viewing table details you can add, modify, delete, or rename a column. Table 2-1 Available Reports for Tables Viewĭisplays details of the first 57 columns including the column name, data type, nullable status, default value, and primary key. For check constraints, enter the expression that should be checked such as flag in ('Y','N'). For unique constraints, select the column(s) that are to be unique. To satisfy a unique constraint, no two rows in the table can have the same values for the specified columns.Įnter the constraint in the field provided. A unique constraint designates a column or a combination of columns as a unique key. No records can be inserted or updated in a table which violates an enabled check constraint.
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To satisfy a unique constraint, no two rows in the table can have the same values for the specified columns.A check constraint is a validation check on one or more columns within the table. Specify the type of constraint (Check or Unique).Ī check constraint is a validation check on one or more columns within the table. A foreign key establishes a relationship between a column (or columns) in one table and a primary or unique key in another table. The sequence is used to populate the selected primary key column. If running Oracle Database 12 c - Populate By Identity Column - Creates a primary key and a sequence. You can also select this option to define a composite primary key (that is, a primary key made up of multiple columns).
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Not populated - Defines a primary key but does not have the value automatically populated with a sequence within a trigger. The primary key can only be a single column. The selected sequence is used in the trigger to populate the selected primary key column. Populated from an existing sequence - Creates a primary key and creates a trigger. The sequence is used in the trigger to populate the selected primary key column. Populate from a new sequence - Creates a primary key and creates a trigger and a sequence. No Primary Key - No primary key is created. Move - Click the Up and Down arrows in the Move column to change the order of previously entered columns.Īdd Column - Click Add Column to add additional columns.
HOW TO CREATE A TABLE AND SET SCALE IN ORACLE APEX SQL GENERATOR
If you attempt to explicitly assign a value to the column using INSERT or UPDATE, then an error is returned.ĭefault - The Oracle Database uses the sequence generator to assign a value to the column by default, but you can also explicitly assign a specified value to the column.ĭefault on Null - The Oracle Database uses the sequence generator to assign a value to the column when a subsequent INSERT statement attempts to assign a value that evaluates to NULL. Options include:Īlways - The Oracle Database always uses the sequence generator to assign a value to the column. If running Oracle Database 12 c - Select an identity option for NUMBER and FLOAT columns. Not Null - To specify a column must always have a value, select the Not Null check box. For example, if a column type TIMESTAMP has a scale of 3, seconds are between. For TIMESTAMP types, scale is the fractional seconds precision and must be a number between 0 and 9. For VARCHAR2 and CHAR types, scale is the number of stored characters. For NUMBER types, scale is the number of digits after the decimal point. Scale - The function of the scale setting depends on the column type. For example, if a column of type NUMBER has precision of 4, the column value can be 0 through 9999. Only NUMBER, FLOAT, INTERVAL YEAR TO MONTH, and INTERVAL DAY TO SECOND have this setting. Precision - The precision is the number of digits before the decimal point.