Table of Contents
DATABASE COMMAND
Category: Workflow / External
Description
This action performs commands on a specified database.
Capabilities
- Custom command
- Create database table
- Delete database table
- Delete all rows
- List tables
- List table fields
Use cases
- Export data into a database by instructing the database to bulk load a text file (e.g. previously generated by EasyMorph)
- Trigger stored procedures
Action settings
| Setting | Description |
|---|---|
| Connector* | Select or create a connector to the database. |
| Command | Select the process to run on the database. Options: Custom command, Create table, Delete table, Delete all rows, List tables, or List table fields. |
| Advanced (Timeout) | Set the number of seconds for this process to complete before timing out. Default is 1800. If the action has not completed within the set Timeout, the workflow stops and displays an error. |
* Setting can be specified using a parameter.
Custom command settings
Description: Sends a free-form SQL query to the specified database.
| Settings | Description |
|---|---|
| Statement | Enter the free-form SQL query to send to the database. The query can include parameters wrapped in braces, which will be replaced with their values during runtime. |
Example: '' LOAD DATA INFILE '{FileName}' INTO TABLE {TableName}; ''
Create table settings
Description: Creates a new database table. Field types are automatically suggested based on the input dataset but can be changed manually. Field names are taken from the input dataset. They are case-sensitive.
| Settings | Description |
|---|---|
| Table name* | Enter the name of the database table to create. |
| If table already exists | Select how EasyMorph handles cases when the named table already exists in the target database. Options: Fail (the workflow stops with an error), Do nothing (the action does nothing and proceeds to the next action), Delete table (the original table is deleted), or Delete rows, keep table (all records in the table are deleted, but the table structure is kept). |
| Data types | Select whether to use Simple or Advanced data type definitions in the field list. |
| Field list | Select the columns to insert into the new table and the data type of each column. Data type options will vary based on the "Data types" option selected (above). In Advanced mode, click the pencil icon next to a column to change its data type. |
* Setting can be specified using a parameter.
Column data type settings
Description: In Advanced mode, the pencil icon next to a selected column opens the Column data type dialog.
| Settings | Description |
|---|---|
| Standard data type / Custom definition | Select Standard data type to choose one of the database's data types, or Custom definition to write the column definition yourself. |
| Data type | Standard data type only. Select the data type. |
| Can't be null | Standard data type only. Adds NOT NULL to the column definition, so the column won't accept null (empty) values. |
| Must be unique | Standard data type only. Adds UNIQUE to the column definition, so the database won't accept duplicate values in the column. |
| Definition | Custom definition only. Enter the part of the CREATE TABLE statement that follows the column name, e.g. DECIMAL(12,2) DEFAULT 0 NOT NULL or INT PRIMARY KEY. EasyMorph adds the column name and passes the text to the database as is. |
Delete table settings
Description: Deletes a database table and all data in it.
| Settings | Description |
|---|---|
| Table name* | Enter the name of the database table to delete. |
| If table doesn't exist | Select how EasyMorph will handle cases when the named table is not found in the database. Options: Fail (the workflow stops with an error) or Do nothing (the workflow does nothing and continues to the next action). |
* Setting can be specified using a parameter.
Delete all rows settings
Description: Deletes a database table and all data in it. Note that some databases don't have a native command for truncation. In such cases truncation is performed with the help of a DELETE query. The operation is atomic meaning that it either deletes everything or, in case of a failure, nothing. The query can include multiple statements if this is supported by the database connector.
| Settings | Description |
|---|---|
| Table name* | Enter the name of the database table to delete. |
| If table doesn't exist | Select how EasyMorph will handle cases when the named table is not found in the database. Options: Fail (the workflow stops with an error) or Do nothing (the workflow does nothing and continues to the next action). |
* Setting can be specified using a parameter.
List tables settings
Description: This command creates a two-column dataset consisting of the Schema name and Table name of all tables in the target database.
| Settings | Description |
|---|---|
| Only for schema | Optionally check this to only list the tables of a certain schema. Enter the schema name or use the schema picker to select it. |
List table fields settings
Description: This command creates a three-column dataset consisting of the Column name, Column data type, and any Column annotations of all fields in the target table.
| Settings | Description |
|---|---|
| Table name* | Select the database table to retrieve details from. |
* Setting can be specified using a parameter.