Package org.queryman.builder.command.select

Interface SelectWhereFirstStep

All Superinterfaces:

AstVisitor, Query, SelectCombiningQueryStep, SelectFinalStep, SelectGroupByStep, SelectHavingFirstStep, SelectLimitStep, SelectLockingStep, SelectOffsetStep, SelectOrderByStep

All Known Subinterfaces:

SelectJoinManyStepsStep, SelectJoinOnFirstStep, SelectJoinOnManySteps, SelectJoinStep

All Known Implementing Classes:

SelectImpl

public interface SelectWhereFirstStep
extends SelectGroupByStep

Method Summary

Modifier and Type	Method	Description
SelectWhereManySteps	where(Conditions conditions)	This function useful in a few case: When the conditions is a special case of condition, like Queryman.conditionBetween(Object, Object, Object), or Queryman.conditionSome(Object, Object, Query) etc.
<T> SelectWhereManySteps	where(T left, T operator, T right)	Example: // SELECT * FROM book WHERE year > 2010 select("*") .from("book") .where("year", ">", "2010") .sql()
SelectWhereManySteps	whereExists(Query query)	Example: // SELECT * FROM book WHERE EXISTS (SELECT * FROM author) select("*") .from("book") .whereExists(select("*").from("authors")) .sql()

Methods inherited from interface org.queryman.builder.ast.AstVisitor

assemble

Methods inherited from interface org.queryman.builder.Query

buildPreparedStatement, sql

Methods inherited from interface org.queryman.builder.command.select.SelectCombiningQueryStep

except, exceptAll, intersect, intersectAll, union, unionAll

Methods inherited from interface org.queryman.builder.command.select.SelectGroupByStep

groupBy, groupBy

Methods inherited from interface org.queryman.builder.command.select.SelectHavingFirstStep

having, having, havingExists

Methods inherited from interface org.queryman.builder.command.select.SelectLimitStep

limit, limit

Methods inherited from interface org.queryman.builder.command.select.SelectLockingStep

forKeyShare, forNoKeyUpdate, forShare, forUpdate

Methods inherited from interface org.queryman.builder.command.select.SelectOffsetStep

offset, offset

Methods inherited from interface org.queryman.builder.command.select.SelectOrderByStep

orderBy, orderBy, orderBy, orderBy

Method Detail

where

<T> SelectWhereManySteps where(T left,
                               T operator,
                               T right)

Example: // SELECT * FROM book WHERE year > 2010 select("*") .from("book") .where("year", ">", "2010") .sql()

Type Parameters:

T - String, Expression, Operator or Query object

Parameters:

left - left operand

operator - operator

right - right operand

where

SelectWhereManySteps where(Conditions conditions)

This function useful in a few case:

• When the conditions is a special case of condition, like Queryman.conditionBetween(Object, Object, Object), or Queryman.conditionSome(Object, Object, Query) etc. See the first example.
• When the conditions is a group of conditions are joined by AND, AND NOT, OR and OR NOT operators. These conditions are being a grouped condition, and will be surrounded by parentheses. See the second example.

The first example: // SELECT * FROM book WHERE id BETWEEN 1 AND 10 select("*") .from("book") .where(conditionBetween("id", "1", "10")) .sql() The second example: // SELECT * FROM book WHERE (id BETWEEN 1 AND 10 AND name = 'Advanced SQL') select("*") .from("book") .where( conditionBetween("id", "1", "10") .and(asName("name"), operator("="), asString("Advanced SQL")) ) .sql()

Parameters:

conditions - condition

Returns:

itself Kind of conditions:

See Also:

Queryman.condition(Object, Object, Object)

whereExists

SelectWhereManySteps whereExists(Query query)

Example: // SELECT * FROM book WHERE EXISTS (SELECT * FROM author) select("*") .from("book") .whereExists(select("*").from("authors")) .sql()

Parameters:

query - subquery

Returns:

itself