Latex 的Table使用multirow and multicolumn

Here are some tips:

• Use a multicolumn{1}{|l}{} & multicolumn{2}{l|}{...} construct;
• Add another multicolumn{2}{c|}{} to the second row; and
• Use an additional cline{1-1} to insert a rule between elements in the first column.

documentclass[a4paper,12pt]{report}
usepackage[inner=0.75in,outer=0.65in,top=0.75in,bottom=0.75in]{geometry}
usepackage[sc]{mathpazo}
usepackage{multirow}
egin{document}
egin{table}[!htb]
  centering
  caption{Present Strength-Production}
  egin{tabular}{|c|l|l|c|c|c|c|c|c|}
    hline
    multirow{2}{*}{Sl.No} & 
    multicolumn{2}{c|}{multirow{2}{*}{	extbf{Designation}}} & 
    multicolumn{4}{c|}{	extbf{Shifts}} & 	extbf{Leave/Off} & 
    multirow{2}{*}{	extbf{Total}} \
    cline{4-7}
    & multicolumn{2}{c|}{} & 	extbf{A} & 	extbf{B} & 	extbf{C} & 	extbf{G} & 	extbf{Reserve} & \
    hline
    1 & multicolumn{2}{l|}{Plant Engineer} & & & & 1 & & 1 \
    hline
    multicolumn{1}{|l}{} & multicolumn{2}{l|}{	extbf{Sub Total}} & & & & 	extbf{1} & & 	extbf{1} \
    hline
    2 & multirow{2}{*}{Operator}&Work related to water regeneration & 1 & 1 & 1 & & 1 & 4 \
    cline{1-1}cline{3-9}
    3 & & Work related to valve control & 1 & 1 & 1 & & 1 & 4 \
    hline
    multicolumn{1}{|l}{} & multicolumn{2}{l|}{	extbf{Sub Total}} & 	extbf{2} & 	extbf{2} & 	extbf{2} & & 	extbf{2} & 	extbf{8} \
    hline
    1 & multicolumn{2}{l|}{Worker} & 2 & 2 & 2 & & 2 & 8 \
    hline
    multicolumn{1}{|l}{} & multicolumn{2}{l|}{	extbf{Sub Total}} & 	extbf{2} & 	extbf{2} & 	extbf{2} & & 	extbf{2} & 	extbf{8} \
    hline hline
    multicolumn{1}{|l}{} & multicolumn{2}{l|}{	extbf{Total}} & 	extbf{4} & 	extbf{4} & 	extbf{4} 
    & 	extbf{1} & 	extbf{4} & 	extbf{17} \
    hline
  end{tabular}
  label{tab:pro_pro}
end{table}
end{document}