### Read One Hero { #read-one-hero }

We can **read** a single `Hero`.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[58:63] hl[60] *}

### Delete a Hero { #delete-a-hero }

We can also **delete** a `Hero`.

{* ../../docs_src/sql_databases/tutorial001_an_py310.py ln[66:73] hl[71] *}

### Run the App { #run-the-app }

You can run the app:

<div class="termy">

				joinDB = joinDB.Where("EXISTS (?)", relatedExists)
			}
			return joinDB.Delete(nil).Error
		case clause.OpUpdate:
			// Update related table rows that have join rows matching owners
			relatedDB := base.Session(&Session{NewDB: true, Context: ctx}).Table(rel.FieldSchema.Table).Where(op.Conditions)

			// correlated join subquery: join.rel_fk = related.pk AND EXISTS owners

            try {
                unregister(scheduledJob);
            } catch (final Exception e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to delete Job: job={}", scheduledJob, e);
                }
            }
            return;
        }

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final CronParamsSupplier paramsOp = () -> {

                                                                                <button type="submit"
                                                                                        class="btn btn-outline-light"
                                                                                        name="delete"

    /** Permission to delete a file or directory */
    public static final int FILE_DELETE = 0x00000040; // 7
    /** Permission to read file attributes */
    public static final int FILE_READ_ATTRIBUTES = 0x00000080; // 8
    /** Permission to write file attributes */
    public static final int FILE_WRITE_ATTRIBUTES = 0x00000100; // 9
    /** Standard delete permission */

package clause

// AssociationOpType represents association operation types
type AssociationOpType int

const (
	OpUnlink AssociationOpType = iota // Unlink association
	OpDelete                          // Delete association records
	OpUpdate                          // Update association records
	OpCreate                          // Create association records with assignments
)

// Association represents an association operation

                                    </button>
                                    <c:if test="${!running and !systemJobId}">
                                        <button type="button" class="btn btn-danger" name="delete"
                                                data-toggle="modal" data-target="#confirmToDelete"
                                                value="<la:message key="labels.crud_button_delete" />">

    }

    /**
     * Delete a stemmer override item from the dictionary.
     * Removes the specified item and redirects to the list page.
     *
     * @param form The edit form containing the item ID to delete
     * @return HTML response redirecting to the list page on success
     */
    @Execute
    @Secured({ ROLE })
    public HtmlResponse delete(final EditForm form) {

    }

    // Test delete method
    @Test
    public void test_delete() throws Exception {
        writeTestFile("a,b => c\nd,e => f\n");

        // Get existing item
        OptionalEntity<CharMappingItem> existing = charMappingFile.get(1L);
        assertTrue(existing.isPresent());

        // Delete the item
        charMappingFile.delete(existing.get());

        // Verify deletion

    @Resource
    private SystemHelper systemHelper;

    /**
     * Default constructor for UserInfoService.
     */
    public UserInfoService() {
        // Default constructor
    }

    /**
     * Deletes user information records older than the specified number of days.
     * This method is used for data cleanup and maintenance operations.
     *
     * @param days the number of days to keep user information records
     */