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sqlserver-database-export

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2024-03-07 20:39:56 +08:00
parent f9d043351a
commit dba25aa198
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chat2db-server/chat2db-plugins/chat2db-sqlserver/src/main/java/ai/chat2db/plugin/sqlserver/SqlServerDBManage.java
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@ -1,13 +1,174 @@
package ai.chat2db.plugin.sqlserver;
import java.sql.Connection;
import java.sql.SQLException;
import ai.chat2db.spi.DBManage;
import ai.chat2db.spi.jdbc.DefaultDBManage;
import ai.chat2db.spi.sql.SQLExecutor;
import java.sql.*;
import java.util.Objects;
public class SqlServerDBManage extends DefaultDBManage implements DBManage {
private String tableDDLFunction
= "CREATE FUNCTION tableSchema.ufn_GetCreateTableScript( @schema_name NVARCHAR(128), @table_name NVARCHAR"
+ "(128)) RETURNS NVARCHAR(MAX) AS BEGIN DECLARE @CreateTableScript NVARCHAR(MAX); DECLARE @IndexScripts "
+ "NVARCHAR(MAX) = ''; DECLARE @ColumnDescriptions NVARCHAR(MAX) = N''; SELECT @CreateTableScript = CONCAT( "
+ "'CREATE TABLE [', s.name, '].[' , t.name, '] (', STUFF( ( SELECT ', [' + c.name + '] ' + tp.name + CASE "
+ "WHEN tp.name IN ('varchar', 'nvarchar', 'char', 'nchar') THEN '(' + IIF(c.max_length = -1, 'MAX', CAST(c"
+ ".max_length AS NVARCHAR(10))) + ')' WHEN tp.name IN ('decimal', 'numeric') THEN '(' + CAST(c.precision AS "
+ "NVARCHAR(10)) + ', ' + CAST(c.scale AS NVARCHAR(10)) + ')' ELSE '' END + ' ' + CASE WHEN c.is_nullable = 1"
+ " THEN 'NULL' ELSE 'NOT NULL' END FROM sys.columns c JOIN sys.types tp ON c.user_type_id = tp.user_type_id "
+ "WHERE c.object_id = t.object_id FOR XML PATH(''), TYPE ).value('/', 'nvarchar(max)'), 1, 1, ''), ');' ) "
+ "FROM sys.tables t JOIN sys.schemas s ON t.schema_id = s.schema_id WHERE t.name = @table_name AND s.name = "
+ "@schema_name; SELECT @IndexScripts = @IndexScripts + 'CREATE ' + CASE WHEN i.is_unique = 1 THEN 'UNIQUE ' "
+ "ELSE '' END + i.type_desc + ' INDEX [' + i.name + '] ON [' + s.name + '].[' + t.name + '] (' + STUFF( ( "
+ "SELECT ', [' + c.name + ']' + CASE WHEN ic.is_descending_key = 1 THEN ' DESC' ELSE ' ASC' END FROM sys"
+ ".index_columns ic JOIN sys.columns c ON ic.object_id = c.object_id AND ic.column_id = c.column_id WHERE ic"
+ ".object_id = i.object_id AND ic.index_id = i.index_id ORDER BY ic.key_ordinal FOR XML PATH('') ), 1, 1, "
+ "'') + ')' + CASE WHEN i.has_filter = 1 THEN ' WHERE ' + i.filter_definition ELSE '' END + ';' + CHAR(13) +"
+ " CHAR(10) FROM sys.indexes i JOIN sys.tables t ON i.object_id = t.object_id JOIN sys.schemas s ON t"
+ ".schema_id = s.schema_id WHERE i.type > 0 AND t.name = @table_name AND s.name "
+ "= @schema_name; SELECT @ColumnDescriptions += 'EXEC sp_addextendedproperty @name=N''MS_Description'', "
+ "@value=N''' + CAST(p.value AS NVARCHAR(MAX)) + ''', @level0type=N''SCHEMA'', @level0name=N''' + "
+ "@schema_name + ''', @level1type=N''TABLE'', @level1name=N''' + @table_name + ''', @level2type=N''COLUMN'',"
+ " @level2name=N''' + c.name + ''';' + CHAR(13) + CHAR(10) FROM sys.extended_properties p JOIN sys.columns c"
+ " ON p.major_id = c.object_id AND p.minor_id = c.column_id JOIN sys.tables t ON c.object_id = t.object_id "
+ "JOIN sys.schemas s ON t.schema_id = s.schema_id WHERE p.class = 1 AND t.name = @table_name AND s.name = "
+ "@schema_name; SET @CreateTableScript = @CreateTableScript + CHAR(13) + CHAR(10) + @IndexScripts + CHAR(13)"
+ " + CHAR(10)+ @ColumnDescriptions+ CHAR(10); RETURN @CreateTableScript; END";
private static String TRIGGER_SQL_LIST
= "SELECT OBJECT_NAME(parent_obj) AS TableName, name AS triggerName, OBJECT_DEFINITION(id) AS "
+ "triggerDefinition, CASE WHEN status & 1 = 1 THEN 'Enabled' ELSE 'Disabled' END AS Status FROM sysobjects "
+ "WHERE xtype = 'TR' ";
@Override
public String exportDatabase(Connection connection, String databaseName, String schemaName, boolean containData) throws SQLException {
StringBuilder sqlBuilder = new StringBuilder();
exportTables(connection, sqlBuilder, schemaName, containData);
exportViews(connection, databaseName, schemaName, sqlBuilder);
exportFunctions(connection, schemaName, sqlBuilder);
exportProcedures(connection, schemaName, sqlBuilder);
exportTriggers(connection, sqlBuilder);
return sqlBuilder.toString();
}
private void exportTables(Connection connection, StringBuilder sqlBuilder, String schemaName, boolean containData) throws SQLException {
try (Statement statement = connection.createStatement(); ResultSet tables = statement.executeQuery("SELECT name FROM SysObjects Where XType='U'")) {
while (tables.next()) {
String tableName = tables.getString(1);
exportTable(connection, tableName, schemaName, sqlBuilder, containData);
}
}
}
private void exportTable(Connection connection, String tableName, String schemaName, StringBuilder sqlBuilder, boolean containData) throws SQLException {
try {
SQLExecutor.getInstance().execute(connection, tableDDLFunction.replace("tableSchema", schemaName),
resultSet -> null);
} catch (Exception e) {
//log.error("Failed to create function", e);
}
try (
Statement statement = connection.createStatement();
ResultSet ddlResult = statement.executeQuery("SELECT " + schemaName + ".ufn_GetCreateTableScript('" + schemaName + "', '" + tableName + "')");
) {
if (ddlResult.next()) {
String createTableSql = "DROP TABLE IF EXISTS " + tableName + ";\n" + ddlResult.getString(1);
sqlBuilder.append(createTableSql);
// 导出表数据
if (containData) {
exportTableData(connection, tableName, sqlBuilder);
} else {
sqlBuilder.append("go").append("\n");
}
}
}
}
private void exportTableData(Connection connection, String tableName, StringBuilder sqlBuilder) throws SQLException {
StringBuilder insertSql = new StringBuilder();
try (Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("select * from " + tableName)) {
ResultSetMetaData metaData = resultSet.getMetaData();
while (resultSet.next()) {
insertSql.append("INSERT INTO ").append(tableName).append(" VALUES (");
for (int i = 1; i <= metaData.getColumnCount(); i++) {
String value = resultSet.getString(i);
if (Objects.isNull(value)) {
insertSql.append("NULL");
} else {
insertSql.append("'").append(value).append("'");
}
if (i < metaData.getColumnCount()) {
insertSql.append(", ");
}
}
insertSql.append(");\n");
}
insertSql.append("\n");
}
sqlBuilder.append(insertSql).append("go").append("\n");
}
private void exportViews(Connection connection, String databaseName, String schemaName, StringBuilder sqlBuilder) throws SQLException {
try (Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("SELECT TABLE_NAME, VIEW_DEFINITION FROM INFORMATION_SCHEMA.VIEWS WHERE TABLE_SCHEMA = '" + schemaName + "' AND TABLE_CATALOG = '" + databaseName + "'; ")) {
while (resultSet.next()) {
sqlBuilder.append("DROP VIEW IF EXISTS ").append(resultSet.getString(1)).append(";\n").append("go").append("\n")
.append(resultSet.getString(2)).append(";\n");
}
sqlBuilder.append("\n");
sqlBuilder.append("go").append("\n");
}
}
private void exportFunctions(Connection connection, String schemaName, StringBuilder sqlBuilder) throws SQLException {
try (Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("SELECT name FROM sys.objects WHERE type = 'FN' and SCHEMA_ID = SCHEMA_ID('" + schemaName + "')")) {
while (resultSet.next()) {
String functionName = resultSet.getString(1);
exportFunction(connection, functionName, schemaName, sqlBuilder);
}
}
}
private void exportFunction(Connection connection, String functionName, String schemaName, StringBuilder sqlBuilder) throws SQLException {
try (Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("SELECT OBJECT_DEFINITION (OBJECT_ID('" + schemaName + "." + functionName + "'))")) {
if (resultSet.next()) {
sqlBuilder.append(resultSet.getString(1).replace("CREATE FUNCTION", "CREATE OR ALTER FUNCTION")).append("\n");
sqlBuilder.append("go").append("\n");
}
}
}
private void exportProcedures(Connection connection, String schemaName, StringBuilder sqlBuilder) throws SQLException {
try (Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("SELECT name FROM sys.procedures WHERE schema_id = SCHEMA_ID('" + schemaName + "');")) {
while (resultSet.next()) {
String procedureName = resultSet.getString(1);
exportProcedure(connection, procedureName, schemaName, sqlBuilder);
}
}
}
private void exportProcedure(Connection connection, String procedureName, String schemaName, StringBuilder sqlBuilder) throws SQLException {
try (Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery("SELECT definition FROM sys.sql_modules WHERE object_id = (OBJECT_ID('" + schemaName + "." + procedureName + "'));")) {
if (resultSet.next()) {
sqlBuilder.append(resultSet.getString(1).replace("CREATE PROCEDURE", "CREATE OR ALTER PROCEDURE")).append("\n");
sqlBuilder.append("go").append("\n");
}
}
}
private void exportTriggers(Connection connection, StringBuilder sqlBuilder) throws SQLException {
try (Statement statement = connection.createStatement(); ResultSet resultSet = statement.executeQuery(TRIGGER_SQL_LIST)) {
while (resultSet.next()) {
sqlBuilder.append(resultSet.getString("triggerDefinition").replace("CREATE TRIGGER", "CREATE OR ALTER TRIGGER"))
.append("\n").append("go").append("\n");
}
}
}
@Override
public void connectDatabase(Connection connection, String database) {
try {