Changes

| Implement <code>appendColumnType()</code> method

| DONE

|-

| Implement <code>appendConcatenate()</code> method

| DONE

|-

| Implement <code>appendPrint()</code> method

| Implement <code>appendTSExtract()</code> method

| DONE

|-

| Add <code>appendTSField</code> method <br /> *NOTE: It is used in <code>appendTSExtract()</code> method,<br /> and it is quite similar to the one in MySQL. <br />(Suggest to NexJ to add it to the super class)

| DONE

|-

| Implement <code>appendTSIncrement()</code> method

| DONE

|-

| Implement <code>getCreateEtcScriptName()</code> method

| Implement <code>getGUIDExpr()</code> method

| DONE

|-

| Implement <code>getNowExpr()</code> method