alter table plans."part_0" add check ( substr(id, 1, 1) = '0' );
alter table plans."part_1" add check ( substr(id, 1, 1) = '1' );
alter table plans."part_2" add check ( substr(id, 1, 1) = '2' );
alter table plans."part_3" add check ( substr(id, 1, 1) = '3' );
alter table plans."part_4" add check ( substr(id, 1, 1) = '4' );
alter table plans."part_5" add check ( substr(id, 1, 1) = '5' );
alter table plans."part_6" add check ( substr(id, 1, 1) = '6' );
alter table plans."part_7" add check ( substr(id, 1, 1) = '7' );
alter table plans."part_8" add check ( substr(id, 1, 1) = '8' );
alter table plans."part_9" add check ( substr(id, 1, 1) = '9' );
alter table plans."part_A" add check ( substr(id, 1, 1) = 'A' );
alter table plans."part_B" add check ( substr(id, 1, 1) = 'B' );
alter table plans."part_C" add check ( substr(id, 1, 1) = 'C' );
alter table plans."part_D" add check ( substr(id, 1, 1) = 'D' );
alter table plans."part_E" add check ( substr(id, 1, 1) = 'E' );
alter table plans."part_F" add check ( substr(id, 1, 1) = 'F' );
alter table plans."part_G" add check ( substr(id, 1, 1) = 'G' );
alter table plans."part_H" add check ( substr(id, 1, 1) = 'H' );
alter table plans."part_I" add check ( substr(id, 1, 1) = 'I' );
alter table plans."part_J" add check ( substr(id, 1, 1) = 'J' );
alter table plans."part_K" add check ( substr(id, 1, 1) = 'K' );
alter table plans."part_L" add check ( substr(id, 1, 1) = 'L' );
alter table plans."part_M" add check ( substr(id, 1, 1) = 'M' );
alter table plans."part_N" add check ( substr(id, 1, 1) = 'N' );
alter table plans."part_O" add check ( substr(id, 1, 1) = 'O' );
alter table plans."part_P" add check ( substr(id, 1, 1) = 'P' );
alter table plans."part_Q" add check ( substr(id, 1, 1) = 'Q' );
alter table plans."part_R" add check ( substr(id, 1, 1) = 'R' );
alter table plans."part_S" add check ( substr(id, 1, 1) = 'S' );
alter table plans."part_T" add check ( substr(id, 1, 1) = 'T' );
alter table plans."part_U" add check ( substr(id, 1, 1) = 'U' );
alter table plans."part_V" add check ( substr(id, 1, 1) = 'V' );
alter table plans."part_W" add check ( substr(id, 1, 1) = 'W' );
alter table plans."part_X" add check ( substr(id, 1, 1) = 'X' );
alter table plans."part_Y" add check ( substr(id, 1, 1) = 'Y' );
alter table plans."part_Z" add check ( substr(id, 1, 1) = 'Z' );
alter table plans."part_a" add check ( substr(id, 1, 1) = 'a' );
alter table plans."part_b" add check ( substr(id, 1, 1) = 'b' );
alter table plans."part_c" add check ( substr(id, 1, 1) = 'c' );
alter table plans."part_d" add check ( substr(id, 1, 1) = 'd' );
alter table plans."part_e" add check ( substr(id, 1, 1) = 'e' );
alter table plans."part_f" add check ( substr(id, 1, 1) = 'f' );
alter table plans."part_g" add check ( substr(id, 1, 1) = 'g' );
alter table plans."part_h" add check ( substr(id, 1, 1) = 'h' );
alter table plans."part_i" add check ( substr(id, 1, 1) = 'i' );
alter table plans."part_j" add check ( substr(id, 1, 1) = 'j' );
alter table plans."part_k" add check ( substr(id, 1, 1) = 'k' );
alter table plans."part_l" add check ( substr(id, 1, 1) = 'l' );
alter table plans."part_m" add check ( substr(id, 1, 1) = 'm' );
alter table plans."part_n" add check ( substr(id, 1, 1) = 'n' );
alter table plans."part_o" add check ( substr(id, 1, 1) = 'o' );
alter table plans."part_p" add check ( substr(id, 1, 1) = 'p' );
alter table plans."part_q" add check ( substr(id, 1, 1) = 'q' );
alter table plans."part_r" add check ( substr(id, 1, 1) = 'r' );
alter table plans."part_s" add check ( substr(id, 1, 1) = 's' );
alter table plans."part_t" add check ( substr(id, 1, 1) = 't' );
alter table plans."part_u" add check ( substr(id, 1, 1) = 'u' );
alter table plans."part_v" add check ( substr(id, 1, 1) = 'v' );
alter table plans."part_w" add check ( substr(id, 1, 1) = 'w' );
alter table plans."part_x" add check ( substr(id, 1, 1) = 'x' );
alter table plans."part_y" add check ( substr(id, 1, 1) = 'y' );
alter table plans."part_z" add check ( substr(id, 1, 1) = 'z' );