revamp, returing will include the table name.cloumn_name. feat, ts_rank, ts_search helpers

pgm_table.go

@@ -1,7 +1,14 @@
 package pgm
 
+import (
+	"strconv"
+)
+
 // Table in database
 type Table struct {
+	tsQuery   *string
+	tsQueryAs *string
+
 	Name         string
 	DerivedTable Query
 	PK           []string
@@ -31,6 +38,12 @@ func (t *Table) Insert() InsertClause {
 	return qb
 }
 
+func (t *Table) WithTsQuery(q, as string) *Table {
+	t.tsQuery = &q
+	t.tsQueryAs = &as
+	return t
+}
+
 // Select table statement
 func (t *Table) Select(field ...Field) SelectClause {
 	qb := &selectQry{
@@ -46,6 +59,18 @@ func (t *Table) Select(field ...Field) SelectClause {
 		qb.table = t.Name
 	}
 
+	if t.tsQuery != nil {
+		var as string
+		if t.tsQueryAs != nil && *t.tsQueryAs != "" {
+			as = *t.tsQueryAs
+		} else {
+			// add default as field
+			as = "query"
+		}
+		qb.args = append(qb.args, as)
+		qb.table += ", TO_TSQUERY('english', $" + strconv.Itoa(len(qb.args)) + ") " + as
+	}
+
 	return qb
 }