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mysql修改列顺序测试

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tmlx1990
2024-05-29 06:58:38 +08:00
parent fb229b21e6
commit 6a60df3c0a
2 changed files with 39 additions and 3 deletions
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18
chat2db-server/chat2db-plugins/chat2db-mysql/src/main/java/ai/chat2db/plugin/mysql/builder/MysqlSqlBuilder.java
View File

@ -104,13 +104,18 @@ public class MysqlSqlBuilder extends DefaultSqlBuilder {
// 判断移动的字段
List<TableColumn> moveColumnList = new ArrayList<>();
movedElements(oldTable.getColumnList(), newTable.getColumnList());
moveColumnList = movedElements(oldTable.getColumnList(), newTable.getColumnList());
// append modify column
for (TableColumn tableColumn : newTable.getColumnList()) {
if (StringUtils.isNotBlank(tableColumn.getEditStatus()) && StringUtils.isNotBlank(tableColumn.getColumnType()) && StringUtils.isNotBlank(tableColumn.getName())) {
if ((StringUtils.isNotBlank(tableColumn.getEditStatus()) && StringUtils.isNotBlank(tableColumn.getColumnType())
&& StringUtils.isNotBlank(tableColumn.getName())) || moveColumnList.contains(tableColumn)) {
MysqlColumnTypeEnum typeEnum = MysqlColumnTypeEnum.getByType(tableColumn.getColumnType());
script.append("\t").append(typeEnum.buildModifyColumn(tableColumn)).append(",\n");
if (moveColumnList.contains(tableColumn)) {
script.append("\t").append(typeEnum.buildModifyColumn(tableColumn, true, findPrevious(tableColumn, newTable))).append(",\n");
} else {
script.append("\t").append(typeEnum.buildModifyColumn(tableColumn)).append(",\n");
}
}
}
@ -133,6 +138,13 @@ public class MysqlSqlBuilder extends DefaultSqlBuilder {
return script.toString();
}
private String findPrevious(TableColumn tableColumn, Table newTable) {
int index = newTable.getColumnList().indexOf(tableColumn);
if (index == 0) {
return "-1";
}
return newTable.getColumnList().get(index - 1).getName();
}
@Override
public String pageLimit(String sql, int offset, int pageNo, int pageSize) {

24
chat2db-server/chat2db-plugins/chat2db-mysql/src/main/java/ai/chat2db/plugin/mysql/type/MysqlColumnTypeEnum.java
View File

@ -199,6 +199,30 @@ public enum MysqlColumnTypeEnum implements ColumnBuilder {
return "";
}
public String buildModifyColumn(TableColumn tableColumn, boolean isMove, String columnName) {
if (EditStatus.DELETE.name().equals(tableColumn.getEditStatus())) {
return StringUtils.join("DROP COLUMN `", tableColumn.getName() + "`");
}
if (EditStatus.ADD.name().equals(tableColumn.getEditStatus())) {
if (isMove){
if (columnName.equals("-1")) {
return StringUtils.join("ADD COLUMN ", buildCreateColumnSql(tableColumn)," FIRST");
} else {
return StringUtils.join("ADD COLUMN ", buildCreateColumnSql(tableColumn), " AFTER ", columnName);
}
}
return StringUtils.join("ADD COLUMN ", buildCreateColumnSql(tableColumn));
}
if (EditStatus.MODIFY.name().equals(tableColumn.getEditStatus())) {
if (!StringUtils.equalsIgnoreCase(tableColumn.getOldName(), tableColumn.getName())) {
return StringUtils.join("CHANGE COLUMN `", tableColumn.getOldName(), "` ", buildCreateColumnSql(tableColumn));
} else {
return StringUtils.join("MODIFY COLUMN ", buildCreateColumnSql(tableColumn));
}
}
return "";
}
private String buildAutoIncrement(TableColumn column, MysqlColumnTypeEnum type) {
if(!type.getColumnType().isSupportAutoIncrement()){
return "";