generate "IS NOT NULL" statement

@param columnName column name
@return
321050
public AnimaQuery<T> notNull(String columnName) {
        conditionSQL.append(" AND ").append(columnName).append(" IS NOT NULL");
        return this;
    }
5942
@Override
	public String onColumnName(String columnName) {
		if (onlyBindParameter)
			return null;

		if (currentSchema != null) {
			Set<SQLProperty> props = currentSchema.getPropertyBySimpleName(columnName);
			AssertKripton.assertTrueOrUnknownPropertyInJQLException(props != null && props.size() > 0, currentMethod, columnName);
			return props.iterator().next().columnName;
		} else {
			return null;
		}
	}
1151974
public static boolean isNull(Cursor cursor, String columnName) {
        return cursor != null && cursor.isNull(cursor.getColumnIndex(columnName));

    }
97824
protected Column getColumn(String name) {
		for (Column column : getColumns()) {
			if (column.getColumnName().equals(name)) {
				return column;
			}
		}
		return null;
	}
223617
public boolean isUpdatableColumn(final String columnName)
   {
      // Use index iteration to avoid generating an Iterator as side-effect
      final FieldColumnInfo[] fcInfos = getUpdatableFcInfos();
      for (int i = 0; i < fcInfos.length; i++) {
         if (fcInfos[i].getCaseSensitiveColumnName().equals(columnName)) {
            return true;
         }
      }
      return false;
   }
526048
public boolean hasColumnName(String columnName) {
		for (FieldType fieldType : fieldTypes) {
			if (fieldType.getColumnName().equals(columnName)) {
				return true;
			}
		}
		return false;
	}
818860
public boolean has(String tableName, String columnName) {
		return has(EXTENSION_NAME, tableName, columnName)
				&& connection.tableExists(getRTreeTableName(tableName,
						columnName));
	}
47500
public boolean isUnique(String columnName) {
        if (columnName == null) {
            return false;
        }

        for (IndexHolder ih : indexHoldersByName.values()) {
            if (ih.isUnique() && ih.getSize() == 1) {
                if (ih.getIndexes().iterator().next().getColumnName().equalsIgnoreCase(columnName)) {
                    return true;
                }
            }
        }

        return false;
    }
428654
public function isNot(string $columnName)
    {
        $this->addCondition('AND', $this->dialect()->quoteName($columnName) . ' = 0');

        return $this;
    }
672769
public boolean containsColumn(String columnName) {
        return columns.stream()
            .map(DbColumn::getName)
            .anyMatch(listColName -> listColName.equals(columnName));
    }
457451
public String logicalColumnName(String columnName, String propertyName) {
		
		return ! isNullOrEmpty( columnName ) ? columnName : unqualify( propertyName );
	}
563023
public static String getIfNotNull(EntityColumn column, String contents, boolean empty) {
        return getIfNotNull(null, column, contents, empty);
    }
254343
public function isNotNull(string $columnName)
    {
        $this->addCondition('AND', $this->dialect()->quoteName($columnName) . ' IS NOT NULL');

        return $this;
    }
178889
public boolean getBoolean(String columnName, boolean defaultValue) {
        int defaultValueAsInt = (defaultValue) ? SQLITE_TRUE : SQLITE_FALSE;

        return getInteger(columnName, defaultValueAsInt) == SQLITE_TRUE;
    }
330804
public String logicalCollectionColumnName(String columnName, String propertyName, String referencedColumn) {
		return isNullOrEmpty( columnName ) ?
				columnName :
				unqualify( propertyName ) + "_" + referencedColumn;
	}
1282633
public int getColunmIndexByName(final String colName) {
		for (final JKTableColumn col : this.tableColumns) {
			if (col.getName().equalsIgnoreCase(colName)) {
				return col.getVisibleIndex();
			}
		}
		return -1;
	}
1228185
protected String generateSelectByShardCql(EnumSet<?> columns, Integer shardNum) {
        StringBuilder sb = new StringBuilder()
            .append("SELECT ");
        boolean first = true;
        for (Enum<?> column : columns) {
            if (first) {
                first = false;
            } else {
                sb.append(",");
            }
            sb.append(column.name());
        }
        sb.append("\n")
            .append("FROM ").append(cassandra.getColumnFamily())
            .append("\n").append("WHERE ").append(Columns.shard_num.name())
            .append(" = ").append(shardNum).append("\n");
        return sb.toString();
    }