Java JDBC PreparedStatement example to create a SQL IN condition. 1. PreparedStatement + Array In JDBC, we can use createArrayOf to create a PreparedStatement IN query. @Override public List<Integer> getPostIdByTagId(List<Integer> tagIds) { List<Integer> result = new ArrayList<>(); String sql = "SELECT tr.object_id as post_id FROM wp_term_relationships tr " + " JOIN wp_term_taxonomy tt JOIN wp_terms …
A JDBC PreparedStatement example to send a batch of SQL commands (create, insert, update) to the database. BatchUpdate.java package com.mkyong.jdbc.preparestatement; import java.math.BigDecimal; import java.sql.*; import java.time.LocalDateTime; import java.util.Arrays; public class BatchUpdate { public static void main(String[] args) { try (Connection conn = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/test", "postgres", "password"); PreparedStatement psDDL = conn.prepareStatement(SQL_CREATE); PreparedStatement psInsert = conn.prepareStatement(SQL_INSERT); PreparedStatement …
Problem A simple table script in Oracle database. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) No idea how to insert current date value, e.g. “04/04/2011” into “CREATED_DATE” field, via JDBC PreparedStatement. String insertTableSQL …
A JDBC PreparedStatement example to select a list of rows from the database. RowSelect.java package com.mkyong.jdbc.preparestatement.row; import com.mkyong.jdbc.model.Employee; import java.math.BigDecimal; import java.sql.*; public class RowSelect { private static final String SQL_SELECT = "SELECT * FROM EMPLOYEE"; public static void main(String[] args) { try (Connection conn = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/test", "postgres", "password"); PreparedStatement preparedStatement = conn.prepareStatement(SQL_SELECT)) { …
Problem A simple table script in Oracle database. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) No idea how to insert a timestamp value, e.g. “04/04/2011 14:45:04” into “CREATED_DATE” field, via JDBC PreparedStatement. String …
A JDBC PreparedStatement example to update a row. RowUpdate.java package com.mkyong.jdbc.preparestatement.row; import java.math.BigDecimal; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; public class RowUpdate { private static final String SQL_UPDATE = "UPDATE EMPLOYEE SET SALARY=? WHERE NAME=?"; public static void main(String[] args) { try (Connection conn = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/test", "postgres", "password"); PreparedStatement preparedStatement = conn.prepareStatement(SQL_UPDATE)) …
A JDBC PreparedStatement example to insert a row into the database. RowInsert.java package com.mkyong.jdbc.preparestatement.row; import java.math.BigDecimal; import java.sql.*; import java.time.LocalDateTime; public class RowInsert { private static final String SQL_INSERT = "INSERT INTO EMPLOYEE (NAME, SALARY, CREATED_DATE) VALUES (?,?,?)"; public static void main(String[] args) { try (Connection conn = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/test", "postgres", "password"); PreparedStatement preparedStatement = …
A JDBC PreparedStatement example to create a table in the database. CREATE TABLE EMPLOYEE ( ID serial, NAME varchar(100) NOT NULL, SALARY numeric(15, 2) NOT NULL, CREATED_DATE timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP PRIMARY KEY (ID) ); TableCreate.java package com.mkyong.jdbc.preparestatement.table; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; public class TableCreate { private …